Hi Guys; We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 - but the Party A only hears 4, 5...The part i.e. 1,2,3 get cut off. Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend. Ujjval Karihaloo
Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio? On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 -- but the Party A only hears 4, 5...The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
Does this ever happen if Party A is using a land line? Is it always the same cell phone carrier? I found it interesting that you mentioned a cell phone for party A so that is why I am asking. Maybe it is just me but I do not really consider some cell carriers to be that reliable. Awkward starts in conversation in the first few seconds of a cell call, cell phones being called but never ring even with good signal yet caller hears ringing, etc... Maybe it is not the VOIP part but a cell carrier issue? Do any other parts of the call conversation have delay/lag/lost bits of conversation? matt at G4.net On Tue, 5 Jan 2010, Lee Riemer wrote:
Have you captured via wireshark and replayed?? Do you hear the same delay?? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
?
?? We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
?
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
?
Ujjval Karihaloo
?
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
Yes, it can be reproduced from landlines as well. I will try to get a trace from LandLIne and check out the RTP playback. Ujjval Karihaloo -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Matt Yaklin Sent: Tuesday, January 05, 2010 10:30 PM To: Lee Riemer Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls Does this ever happen if Party A is using a land line? Is it always the same cell phone carrier? I found it interesting that you mentioned a cell phone for party A so that is why I am asking. Maybe it is just me but I do not really consider some cell carriers to be that reliable. Awkward starts in conversation in the first few seconds of a cell call, cell phones being called but never ring even with good signal yet caller hears ringing, etc... Maybe it is not the VOIP part but a cell carrier issue? Do any other parts of the call conversation have delay/lag/lost bits of conversation? matt at G4.net On Tue, 5 Jan 2010, Lee Riemer wrote:
Have you captured via wireshark and replayed?? Do you hear the same delay?? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
?
?? We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
?
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
?
Ujjval Karihaloo
?
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
I trace a call...on my cell phone I hear the first 1 -2 seconds clipped...however the trace sounds fine.... Traced at SBC side facing Level 3 Traced at SBC side facing Customer (who receives inbound call) Traced at Customer Prem All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds. Ujjval Karihaloo From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio? On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote: Hi Guys; We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 - but the Party A only hears 4, 5...The part i.e. 1,2,3 get cut off. Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend. Ujjval Karihaloo _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org<mailto:VoiceOps at voiceops.org> https://puck.nether.net/mailman/listinfo/voiceops
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones? On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call...on my cell phone I hear the first 1 -2 seconds clipped...however the trace sounds fine....
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
Ujjval Karihaloo
*From:* voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] *On Behalf Of *Lee Riemer *Sent:* Tuesday, January 05, 2010 10:15 PM *To:* voiceops at voiceops.org *Subject:* Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 -- but the Party A only hears 4, 5...The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org <mailto:VoiceOps at voiceops.org> https://puck.nether.net/mailman/listinfo/voiceops
Yes, we are running 3.1.2 on most, some are running latest 3.2.2. Do you remember the exact firmware version you had issues with. Level 3 has mentioned RTP SSRC could b an issue, but they have no firm data backing it up. It also happens with Asterisk based VoIP PBX's... Ujjval Karihaloo From: Lee Riemer [mailto:lriemer at bestline.net] Sent: Tuesday, January 05, 2010 10:43 PM To: Ujjval Karihaloo Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones? On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote: I trace a call...on my cell phone I hear the first 1 -2 seconds clipped...however the trace sounds fine.... Traced at SBC side facing Level 3 Traced at SBC side facing Customer (who receives inbound call) Traced at Customer Prem All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds. Ujjval Karihaloo From: voiceops-bounces at voiceops.org<mailto:voiceops-bounces at voiceops.org> [mailto:voiceops-bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org<mailto:voiceops at voiceops.org> Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio? On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote: Hi Guys; We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 - but the Party A only hears 4, 5...The part i.e. 1,2,3 get cut off. Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend. Ujjval Karihaloo _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org<mailto:VoiceOps at voiceops.org> https://puck.nether.net/mailman/listinfo/voiceops
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware.?? Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below? matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
?
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
?
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
?
Ujjval Karihaloo
?
From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
?
Have you captured via wireshark and replayed?? Do you hear the same delay?? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
?
?? We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
?
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
?
Ujjval Karihaloo
?
?
?
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
https://puck.nether.net/mailman/listinfo/voiceops
?
Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway - Time and Seq numbers look perfect with gaps or no issue there at all. Ujjval Karihaloo -----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware.?? Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below? matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
?
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
?
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
?
Ujjval Karihaloo
?
From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
?
Have you captured via wireshark and replayed?? Do you hear the same delay?? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
?
?? We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
?
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
?
Ujjval Karihaloo
?
?
?
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
https://puck.nether.net/mailman/listinfo/voiceops
?
I think it might be related to the beginning sequence number. Not sure though, just a theory. In any case, your fw is past the one that gave the MS a headache. You could try a different brand phone to see if it is reproducable. On Jan 5, 2010, at 11:55 PM, Ujjval Karihaloo <ujjval at simplesignal.com> wrote:
Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway - Time and Seq numbers look perfect with gaps or no issue there at all.
Ujjval Karihaloo
-----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below?
matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
Ujjval Karihaloo
From: voiceops-bounces at voiceops.org [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
I dug up the old email and they upgraded to 3.1.3. On Jan 5, 2010, at 11:55 PM, Ujjval Karihaloo <ujjval at simplesignal.com> wrote:
Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway - Time and Seq numbers look perfect with gaps or no issue there at all.
Ujjval Karihaloo
-----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below?
matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
Ujjval Karihaloo
From: voiceops-bounces at voiceops.org [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
On Polycoms we are running 3.1.2 on most, some are running latest 3.2.2. Level 3 has mentioned RTP SSRC could b an issue, but they have no firm data backing it up. It also happens with Asterisk based VoIP PBX?s always without fail?anyone experienced that? I will take it up with Level 3. Ujjval Karihaloo On Jan 6, 2010, at 12:54 AM, "Lee Riemer" <lriemer at bestline.net<mailto:lriemer at bestline.net>> wrote: I dug up the old email and they upgraded to 3.1.3. On Jan 5, 2010, at 11:55 PM, Ujjval Karihaloo <ujjval at simplesignal.com<mailto:ujjval at simplesignal.com>> wrote: Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway - Time and Seq numbers look perfect with gaps or no issue there at all. Ujjval Karihaloo -----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; <mailto:voiceops at voiceops.org> voiceops at voiceops.org<mailto:voiceops at voiceops.org> Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls On Tue, 5 Jan 2010, Lee Riemer wrote: I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones? If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below? matt On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote: I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?. Traced at SBC side facing Level 3 Traced at SBC side facing Customer (who receives inbound call) Traced at Customer Prem All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds. Ujjval Karihaloo From: voiceops-bounces at voiceops.org<mailto:voiceops-bounces at voiceops.org> [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: <mailto:voiceops at voiceops.org> voiceops at voiceops.org<mailto:voiceops at voiceops.org> Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio? On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote: Hi Guys; We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off. Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend. Ujjval Karihaloo _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org<mailto:VoiceOps at voiceops.org> https://puck.nether.net/mailman/listinfo/voiceops
Some of the initial clipping is endemic to the technology. RFC 3960 alludes to some of the challenges. David On Jan 6, 2010 3:53am, Ujjval Karihaloo <ujjval at simplesignal.com> wrote:
On Polycoms we are running 3.1.2 on most, some are running latest 3.2.2. Level 3 has mentioned RTP SSRC could b an issue, but they have no firm data backing it up. It also happens with Asterisk based VoIP PBX's always without fail?anyone experienced that? I will take it up with Level 3. Ujjval Karihaloo
On Jan 6, 2010, at 12:54 AM, "Lee Riemer" lriemer at bestline.net> wrote:
I dug up the old email and they upgraded to 3.1.3.
On Jan 5, 2010, at 11:55 PM, Ujjval Karihaloo ujjval at simplesignal.com> wrote:
Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway - Time and Seq numbers look perfect with gaps or no issue there at all.
Ujjval Karihaloo
-----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below?
matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
Ujjval Karihaloo
From: voiceops-bounces at voiceops.org [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. ie Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part ie 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
Of course, even if the protocol did not have such gaps, there is a lot of state that has to be managed in a lot of devices in the time between the thoroughly frappachinoed receptionist hitting the answer button and spewing "ThankYouForCallingMetropolisSpeedSpeakingInstitute!ItsAGreatDayToSuperChargeYourSpeachHowMayIDirectYourCall" into the headset. I"ve often considered re-recording all stored prompts and announcements to prefix 2 seconds of silence, as well as grinding some 'ludes into the frap mix. David On Wed, Jan 6, 2010 at 8:23 AM, <hiersd at gmail.com> wrote:
Some of the initial clipping is endemic to the technology. RFC 3960 alludes to some of the challenges.
David
On Jan 6, 2010 3:53am, Ujjval Karihaloo <ujjval at simplesignal.com> wrote:
On Polycoms ?we are running 3.1.2 on most, some are running latest 3.2.2. ?Level 3 has mentioned RTP SSRC could b an issue, but they have no firm data backing it up. It also happens with Asterisk based VoIP PBX?s always without fail?anyone experienced that? I will take it up with Level 3. Ujjval Karihaloo
On Jan 6, 2010, at 12:54 AM, "Lee Riemer" lriemer at bestline.net> wrote:
I dug up the old email and they upgraded to 3.1.3.
On Jan 5, 2010, at 11:55 PM, Ujjval Karihaloo ujjval at simplesignal.com> wrote:
Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway ?- Time and Seq numbers look perfect with gaps or ?no issue there at all.
Ujjval Karihaloo
-----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. ??Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below?
matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
????I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
????Traced at SBC side facing Level 3
????Traced at SBC side facing Customer (who receives inbound call)
????Traced at Customer Prem
????All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
????Ujjval Karihaloo
From: voiceops-bounces at voiceops.org [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? ?Do you hear the same delay? ?Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
??We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
Agreed, we do that too...puts 2 sec delays on IVRs. However, we are getting complaints from users who answer their phone - like Your sample office receptionist below. Ujjval Karihaloo VP Voice Engineering IP Phone: +13032428610 E-Fax: +17202391690 SimpleSignal Inc. 88 Inverness Circle East Suite K105 Englewood, CO? 80112 -----Original Message----- From: David Hiers [mailto:hiersd at gmail.com] Sent: Wednesday, January 06, 2010 10:40 AM To: Ujjval Karihaloo Cc: voiceops at voiceops.org Subject: Re: Re: [VoiceOps] Delay on RTP for Inbound Calls Of course, even if the protocol did not have such gaps, there is a lot of state that has to be managed in a lot of devices in the time between the thoroughly frappachinoed receptionist hitting the answer button and spewing "ThankYouForCallingMetropolisSpeedSpeakingInstitute!ItsAGreatDayToSuperChargeYourSpeachHowMayIDirectYourCall" into the headset. I"ve often considered re-recording all stored prompts and announcements to prefix 2 seconds of silence, as well as grinding some 'ludes into the frap mix. David On Wed, Jan 6, 2010 at 8:23 AM, <hiersd at gmail.com> wrote:
Some of the initial clipping is endemic to the technology. RFC 3960 alludes to some of the challenges.
David
On Jan 6, 2010 3:53am, Ujjval Karihaloo <ujjval at simplesignal.com> wrote:
On Polycoms ?we are running 3.1.2 on most, some are running latest 3.2.2. ?Level 3 has mentioned RTP SSRC could b an issue, but they have no firm data backing it up. It also happens with Asterisk based VoIP PBX's always without fail.anyone experienced that? I will take it up with Level 3. Ujjval Karihaloo
On Jan 6, 2010, at 12:54 AM, "Lee Riemer" lriemer at bestline.net> wrote:
I dug up the old email and they upgraded to 3.1.3.
On Jan 5, 2010, at 11:55 PM, Ujjval Karihaloo ujjval at simplesignal.com> wrote:
Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway ?- Time and Seq numbers look perfect with gaps or ?no issue there at all.
Ujjval Karihaloo
-----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. ??Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below?
matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
????I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
????Traced at SBC side facing Level 3
????Traced at SBC side facing Customer (who receives inbound call)
????Traced at Customer Prem
????All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
????Ujjval Karihaloo
From: voiceops-bounces at voiceops.org [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? ?Do you hear the same delay? ?Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
??We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
What is the temporal delta between --------- 200 OK -------> and <--------- ACK ---------- ? On 01/06/2010 01:11 PM, Ujjval Karihaloo wrote:
Agreed, we do that too...puts 2 sec delays on IVRs. However, we are getting complaints from users who answer their phone - like Your sample office receptionist below.
Ujjval Karihaloo VP Voice Engineering IP Phone: +13032428610 E-Fax: +17202391690
SimpleSignal Inc. 88 Inverness Circle East Suite K105 Englewood, CO 80112
-----Original Message----- From: David Hiers [mailto:hiersd at gmail.com] Sent: Wednesday, January 06, 2010 10:40 AM To: Ujjval Karihaloo Cc: voiceops at voiceops.org Subject: Re: Re: [VoiceOps] Delay on RTP for Inbound Calls
Of course, even if the protocol did not have such gaps, there is a lot of state that has to be managed in a lot of devices in the time between the thoroughly frappachinoed receptionist hitting the answer button and spewing "ThankYouForCallingMetropolisSpeedSpeakingInstitute!ItsAGreatDayToSuperChargeYourSpeachHowMayIDirectYourCall" into the headset.
I"ve often considered re-recording all stored prompts and announcements to prefix 2 seconds of silence, as well as grinding some 'ludes into the frap mix.
David
On Wed, Jan 6, 2010 at 8:23 AM,<hiersd at gmail.com> wrote:
Some of the initial clipping is endemic to the technology. RFC 3960 alludes to some of the challenges.
David
On Jan 6, 2010 3:53am, Ujjval Karihaloo<ujjval at simplesignal.com> wrote:
On Polycoms we are running 3.1.2 on most, some are running latest 3.2.2. Level 3 has mentioned RTP SSRC could b an issue, but they have no firm data backing it up. It also happens with Asterisk based VoIP PBX's always without fail.anyone experienced that? I will take it up with Level 3. Ujjval Karihaloo
On Jan 6, 2010, at 12:54 AM, "Lee Riemer" lriemer at bestline.net> wrote:
I dug up the old email and they upgraded to 3.1.3.
On Jan 5, 2010, at 11:55 PM, Ujjval Karihaloo ujjval at simplesignal.com> wrote:
Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway - Time and Seq numbers look perfect with gaps or no issue there at all.
Ujjval Karihaloo
-----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below?
matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
Ujjval Karihaloo
From: voiceops-bounces at voiceops.org [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
-- Alex Balashov - Principal Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671
36 ms as per Wireshark Timestamps, which I believe are accurate Ujjval Karihaloo -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Wednesday, January 06, 2010 11:18 AM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls What is the temporal delta between --------- 200 OK -------> and <--------- ACK ---------- ? On 01/06/2010 01:11 PM, Ujjval Karihaloo wrote:
Agreed, we do that too...puts 2 sec delays on IVRs. However, we are getting complaints from users who answer their phone - like Your sample office receptionist below.
Ujjval Karihaloo VP Voice Engineering IP Phone: +13032428610 E-Fax: +17202391690
SimpleSignal Inc. 88 Inverness Circle East Suite K105 Englewood, CO 80112
-----Original Message----- From: David Hiers [mailto:hiersd at gmail.com] Sent: Wednesday, January 06, 2010 10:40 AM To: Ujjval Karihaloo Cc: voiceops at voiceops.org Subject: Re: Re: [VoiceOps] Delay on RTP for Inbound Calls
Of course, even if the protocol did not have such gaps, there is a lot of state that has to be managed in a lot of devices in the time between the thoroughly frappachinoed receptionist hitting the answer button and spewing "ThankYouForCallingMetropolisSpeedSpeakingInstitute!ItsAGreatDayToSuperChargeYourSpeachHowMayIDirectYourCall" into the headset.
I"ve often considered re-recording all stored prompts and announcements to prefix 2 seconds of silence, as well as grinding some 'ludes into the frap mix.
David
On Wed, Jan 6, 2010 at 8:23 AM,<hiersd at gmail.com> wrote:
Some of the initial clipping is endemic to the technology. RFC 3960 alludes to some of the challenges.
David
On Jan 6, 2010 3:53am, Ujjval Karihaloo<ujjval at simplesignal.com> wrote:
On Polycoms we are running 3.1.2 on most, some are running latest 3.2.2. Level 3 has mentioned RTP SSRC could b an issue, but they have no firm data backing it up. It also happens with Asterisk based VoIP PBX's always without fail.anyone experienced that? I will take it up with Level 3. Ujjval Karihaloo
On Jan 6, 2010, at 12:54 AM, "Lee Riemer" lriemer at bestline.net> wrote:
I dug up the old email and they upgraded to 3.1.3.
On Jan 5, 2010, at 11:55 PM, Ujjval Karihaloo ujjval at simplesignal.com> wrote:
Agreed, Just checked the RTP timestamps for the RTP Stream from my SBC to level 3 Media gateway - Time and Seq numbers look perfect with gaps or no issue there at all.
Ujjval Karihaloo
-----Original Message----- From: Matt Yaklin [mailto:myaklin at g4.net] Sent: Tuesday, January 05, 2010 10:50 PM To: Lee Riemer Cc: Ujjval Karihaloo; voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below?
matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
Ujjval Karihaloo
From: voiceops-bounces at voiceops.org [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio?
On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
Hi Guys;
We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________
VoiceOps mailing list
VoiceOps at voiceops.org
VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
-- Alex Balashov - Principal Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
On 01/06/2010 11:23 AM, hiersd at gmail.com wrote:
Some of the initial clipping is endemic to the technology. RFC 3960 alludes to some of the challenges.
I concur. Certain problems just can't be solved (easily) - this is one of them. Between not being required to receive audio until the three-way handshake completes and end-to-end network delay and various other state transitions, the safe side is always to ensure at least a >= 1 sec silence gap after pickup. -- Alex Balashov - Principal Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671
Not in my case. The captures sounded fine, it wasn't until metaswitch said they found an issue with old polycom fw that I was able to solve the problem. It was like the metaswitch was ignoring the packets. The problem was exactly the same, 1st ~5 seconds of silence towards the pstn. Not on every call but easily reproducable. The fw they upgraded to was 3.1.2 I believe. On Jan 5, 2010, at 11:49 PM, Matt Yaklin <myaklin at g4.net> wrote:
On Tue, 5 Jan 2010, Lee Riemer wrote:
I forgot, we had this issue with invalid RTP sequence numbers with old Polycom firmware. Are you using Polycom phones?
If that was the case would not his captures of the traffic and the resulting replay be mangled at every point me mentions below?
matt
On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
I trace a call?on my cell phone I hear the first 1 -2 seconds clipped?however the trace sounds fine?.
Traced at SBC side facing Level 3
Traced at SBC side facing Customer (who receives inbound call)
Traced at Customer Prem
All the above 3 traces the Audio sounds fine, but on my cell phone I miss the first 2 seconds.
Ujjval Karihaloo
From: voiceops-bounces at voiceops.org [mailto:voiceops- bounces at voiceops.org] On Behalf Of Lee Riemer Sent: Tuesday, January 05, 2010 10:15 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
Have you captured via wireshark and replayed? Do you hear the same delay? Is there a delay between the OK (answer) and the audio? On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote: Hi Guys;
We have noticed that sometimes when calling into our DIDs (Level 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party A) calls into a DID (Party B) that is on our network (Broadsoft Softswitch), Party B answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The part i.e. 1,2,3 get cut off.
Plus it is sporadic and difficult to reproduce, was wondering if folks have encountered this and any good troubleshooting techniques you can recommend.
Ujjval Karihaloo
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
participants (5)
-
abalashov＠evaristesys.com -
hiersd＠gmail.com -
lriemer＠bestline.net -
myaklin＠g4.net -
ujjval＠simplesignal.com