Hi, I was hoping I could pick someone's brain here about an issue that has me stumped. Customer has a Cisco AS5400 (non-XM) with a channelised T3 from $MAJORTELCO. The 28 subrate DS1s are just PRIs, no NFAS, just 23B+1D on every DS1. Like so: controller T3 6/0 framing m23 clock source line t1 1-28 controller ! controller T1 6/0:1 framing esf pri-group timeslots 1-24 ! controller T1 6/0:2 framing esf pri-group timeslots 1-24 ! [and so on] They were having some Q.931 messaging issues that were ultimately traced to timing slips on the DS1s. And yes, there are timing slips indeed: VOIPGW-1#show controllers T1 6/0:1 T1 6/0:1 is up. Applique type is Channelized T1 No alarms detected. alarm-trigger is not set Soaking time: 3, Clearance time: 10 AIS State:Clear LOS State:Clear LOF State:Clear Version info of slot 6: HW: 768, PLD Rev: 1 Framer Version: 0x28 Manufacture Cookie Info: EEPROM Type 0x0001, EEPROM Version 0x01, Board ID 0x01, Board Hardware Version 3.0, Item Number 73-4089-03, Board Revision B0, Serial Number JAB0429044D, PLD/ISP Version <unset>, Manufacture Date 14-Jul-2000. Framing is ESF, Clock Source is Line. Data in current interval (579 seconds elapsed): 0 Line Code Violations, 0 Path Code Violations 579 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins 579 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs $MAJORTELCO says this is because we're not taking recovering clock from the line. But we quite clearly are: "Framing is ESF, Clock Source is Line." In fact, this IOS release (Version 12.4(7g)) doesn't seem to give me a way to change that even if I wanted to. This subcommand: controller T3 6/0 t1 1 clock source internal ... would be the normal way to do it, but the only subcommand that exists for 't1 X' is 'controller'. There are no PM errors on the T3 itself: T3 6/0 is up. Applique type is Channelized T3 No alarms detected. Framing is M23, Line Code is B3ZS, Clock Source is Line Data in current interval (750 seconds elapsed): 0 Line Code Violations, 0 P-bit Coding Violation 0 C-bit Coding Violation, 0 P-bit Err Secs 0 P-bit Severely Err Secs, 0 Severely Err Framing Secs 0 Unavailable Secs, 0 Line Errored Secs 0 C-bit Errored Secs, 0 C-bit Severely Errored Secs So, what's the deal? Where are these timing slips on the DS1s coming from? -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
On 03/07/2014 02:05 PM, Alex Balashov wrote:
In fact, this IOS release (Version 12.4(7g)) doesn't seem to give me a way to change that even if I wanted to. This subcommand:
controller T3 6/0 t1 1 clock source internal
... would be the normal way to do it, but the only subcommand that exists for 't1 X' is 'controller'.
Reading the Internets, this seems to be a limitation of the AS5400 itself, rather than the IOS per se. Not that it matters. The point is that we're supposedly clocking off the incoming line, and yet...? -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
Someone e-mailed me privately off-list with a link to: http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p... Which clued me into the fact that I can take global TDM clocking off a particular T1: tdm clock priority 1 6/0:1 So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer! -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
Nice. Learn something new every day.
-----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Someone e-mailed me privately off-list with a link to:
http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice- platforms/48567-clocking.html
Which clued me into the fact that I can take global TDM clocking off a particular T1:
tdm clock priority 1 6/0:1
So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer!
-- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
Thanks for sharing. Why did you choose that T1? Frank -----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3 Someone e-mailed me privately off-list with a link to: http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p latforms/48567-clocking.html Which clued me into the fact that I can take global TDM clocking off a particular T1: tdm clock priority 1 6/0:1 So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer! -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
No particular reason for choosing that one. Should I have chosen another? On 03/08/2014 12:28 AM, Frank Bulk wrote:
Thanks for sharing. Why did you choose that T1?
Frank
-----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Someone e-mailed me privately off-list with a link to:
http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p latforms/48567-clocking.html
Which clued me into the fact that I can take global TDM clocking off a particular T1:
tdm clock priority 1 6/0:1
So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer!
-- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
No, I was just wondering if there is generally one that carries the timing on a T3. Frank -----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Friday, March 07, 2014 11:33 PM To: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3 No particular reason for choosing that one. Should I have chosen another? On 03/08/2014 12:28 AM, Frank Bulk wrote:
Thanks for sharing. Why did you choose that T1?
Frank
-----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Someone e-mailed me privately off-list with a link to:
http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p
latforms/48567-clocking.html
Which clued me into the fact that I can take global TDM clocking off a particular T1:
tdm clock priority 1 6/0:1
So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer!
-- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
The T3's timing is logically independent of the subrate channels. The T3 is configured to take clock from the line. But the timing on the subrate DS1s should be identical, since they're all on the same DS3, right? On 03/08/2014 12:37 AM, Frank Bulk wrote:
No, I was just wondering if there is generally one that carries the timing on a T3.
Frank
-----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Friday, March 07, 2014 11:33 PM To: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
No particular reason for choosing that one. Should I have chosen another?
On 03/08/2014 12:28 AM, Frank Bulk wrote:
Thanks for sharing. Why did you choose that T1?
Frank
-----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Someone e-mailed me privately off-list with a link to:
http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p
latforms/48567-clocking.html
Which clued me into the fact that I can take global TDM clocking off a particular T1:
tdm clock priority 1 6/0:1
So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer!
-- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
On Sat, Mar 8, 2014 at 12:42 AM, Alex Balashov <abalashov at evaristesys.com>wrote:
The T3's timing is logically independent of the subrate channels. The T3 is configured to take clock from the line. But the timing on the subrate DS1s should be identical, since they're all on the same DS3, right?
From my understanding, not necessarily. I remember years ago having a DS3 with the individual DS1s connected to three or four different telcos (we were shopping around at the time). The DS1s from one upstream telco had slightly different timing than a DS1 from another telco.
-- Jared Smith
On 03/08/2014 10:21 AM, Jared Smith wrote:
On Sat, Mar 8, 2014 at 12:42 AM, Alex Balashov <abalashov at evaristesys.com <mailto:abalashov at evaristesys.com>> wrote:
The T3's timing is logically independent of the subrate channels. The T3 is configured to take clock from the line. But the timing on the subrate DS1s should be identical, since they're all on the same DS3, right?
From my understanding, not necessarily. I remember years ago having a DS3 with the individual DS1s connected to three or four different telcos (we were shopping around at the time). The DS1s from one upstream telco had slightly different timing than a DS1 from another telco.
Oh, yeah--well, that makes sense. I meant if all the channels on the DS3, and the DS3 itself, is coming from the same network element on the carrier side. Presumably that box has a global timing signature for everything it puts out. -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
Normally in the TDM world, you don't try to time a DS3 off anything on a DS3, including a DS1. You time a DS3 off a T1 transmitting all 1s, preferably one generated by a BITS clock. As I think you alluded, the DS1 -- what you're using to derive timing -- is a layer above the T1 where the clock ticks happen. But whatever it takes to discipline the internal 1.544 MHz clock to sync up with the transmitter will work. It's interesting that Cisco has this option. Cisco TDM always seems a little out of step with traditional (and often overpriced) 1970s-thought-process TDM gear.
mark at ecg.co +12293160013 http://ecg.co/lindsey
On Mar 8, 2014, at 0:43, Alex Balashov <abalashov at evaristesys.com> wrote:
The T3's timing is logically independent of the subrate channels. The T3 is configured to take clock from the line. But the timing on the subrate DS1s should be identical, since they're all on the same DS3, right?
On 03/08/2014 12:37 AM, Frank Bulk wrote:
No, I was just wondering if there is generally one that carries the timing on a T3.
Frank
-----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Friday, March 07, 2014 11:33 PM To: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
No particular reason for choosing that one. Should I have chosen another?
On 03/08/2014 12:28 AM, Frank Bulk wrote:
Thanks for sharing. Why did you choose that T1?
Frank
-----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Someone e-mailed me privately off-list with a link to: http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p latforms/48567-clocking.html
Which clued me into the fact that I can take global TDM clocking off a particular T1:
tdm clock priority 1 6/0:1
So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer!
-- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
Mark, Can you expand what you mean by "... the DS1 ... is a layer above the T1 where the clock ticks happen"? I'm not familiar with that concept. Frank -----Original Message----- From: Mark Lindsey [mailto:lindsey at e-c-group.com] Sent: Saturday, March 08, 2014 10:34 AM To: Alex Balashov Cc: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3 Normally in the TDM world, you don't try to time a DS3 off anything on a DS3, including a DS1. You time a DS3 off a T1 transmitting all 1s, preferably one generated by a BITS clock. As I think you alluded, the DS1 -- what you're using to derive timing -- is a layer above the T1 where the clock ticks happen. But whatever it takes to discipline the internal 1.544 MHz clock to sync up with the transmitter will work. It's interesting that Cisco has this option. Cisco TDM always seems a little out of step with traditional (and often overpriced) 1970s-thought-process TDM gear.
mark at ecg.co +12293160013 http://ecg.co/lindsey
On Mar 8, 2014, at 0:43, Alex Balashov <abalashov at evaristesys.com> wrote:
The T3's timing is logically independent of the subrate channels. The T3 is configured to take clock from the line. But the timing on the subrate DS1s should be identical, since they're all on the same DS3, right?
On 03/08/2014 12:37 AM, Frank Bulk wrote:
No, I was just wondering if there is generally one that carries the timing on a T3.
Frank
-----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Friday, March 07, 2014 11:33 PM To: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
No particular reason for choosing that one. Should I have chosen another?
On 03/08/2014 12:28 AM, Frank Bulk wrote:
Thanks for sharing. Why did you choose that T1?
Frank
-----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Someone e-mailed me privately off-list with a link to:
http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p
latforms/48567-clocking.html
Which clued me into the fact that I can take global TDM clocking off a particular T1:
tdm clock priority 1 6/0:1
So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer!
-- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
T1 is the physical transport, delivered on 4 wires, 2 send and 2 receive, and capable of delivering 1.544 Mbps. T1 defines the voltage states. DS1 is a service that is readily built on top of a T1 transport. The DS1 delivers 1.536 Mbps. With a framing and coding applied to a T1, you can interpret the voltage transitions as bits. You can also deliver a DS1 via DS3 service. O'Reilly's book "T1 Survival Guide" goes into this a good bit.
mark at ecg.co +1-229-316-0013 http://ecg.co/lindsey
On Mar 8, 2014, at 11:38 , Frank Bulk <frnkblk at iname.com> wrote:
Mark,
Can you expand what you mean by "... the DS1 ... is a layer above the T1 where the clock ticks happen"? I'm not familiar with that concept.
Frank
-----Original Message----- From: Mark Lindsey [mailto:lindsey at e-c-group.com] Sent: Saturday, March 08, 2014 10:34 AM To: Alex Balashov Cc: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Normally in the TDM world, you don't try to time a DS3 off anything on a DS3, including a DS1. You time a DS3 off a T1 transmitting all 1s, preferably one generated by a BITS clock.
As I think you alluded, the DS1 -- what you're using to derive timing -- is a layer above the T1 where the clock ticks happen.
But whatever it takes to discipline the internal 1.544 MHz clock to sync up with the transmitter will work. It's interesting that Cisco has this option.
Cisco TDM always seems a little out of step with traditional (and often overpriced) 1970s-thought-process TDM gear.
mark at ecg.co +12293160013 http://ecg.co/lindsey
On Mar 8, 2014, at 0:43, Alex Balashov <abalashov at evaristesys.com> wrote:
The T3's timing is logically independent of the subrate channels. The T3 is configured to take clock from the line. But the timing on the subrate DS1s should be identical, since they're all on the same DS3, right?
On 03/08/2014 12:37 AM, Frank Bulk wrote:
No, I was just wondering if there is generally one that carries the timing on a T3.
Frank
-----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Friday, March 07, 2014 11:33 PM To: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
No particular reason for choosing that one. Should I have chosen another?
On 03/08/2014 12:28 AM, Frank Bulk wrote:
Thanks for sharing. Why did you choose that T1?
Frank
-----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Someone e-mailed me privately off-list with a link to:
http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p
latforms/48567-clocking.html
Which clued me into the fact that I can take global TDM clocking off a particular T1:
tdm clock priority 1 6/0:1
So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer!
-- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
On 03/09/2014 05:01 PM, Mark R Lindsey wrote:
O'Reilly's book "T1 Survival Guide" goes into this a good bit.
+1 for that book. It guided me through, back in the old school. (With apologies to Tupac). -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
Thanks, that's really helpful! Frank -----Original Message----- From: Mark R Lindsey [mailto:mark at ecg.co] Sent: Sunday, March 09, 2014 4:01 PM To: Frank Bulk Cc: Mark Lindsey; Alex Balashov; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3 T1 is the physical transport, delivered on 4 wires, 2 send and 2 receive, and capable of delivering 1.544 Mbps. T1 defines the voltage states. DS1 is a service that is readily built on top of a T1 transport. The DS1 delivers 1.536 Mbps. With a framing and coding applied to a T1, you can interpret the voltage transitions as bits. You can also deliver a DS1 via DS3 service. O'Reilly's book "T1 Survival Guide" goes into this a good bit.
mark at ecg.co +1-229-316-0013 http://ecg.co/lindsey
On Mar 8, 2014, at 11:38 , Frank Bulk <frnkblk at iname.com> wrote:
Mark,
Can you expand what you mean by "... the DS1 ... is a layer above the T1 where the clock ticks happen"? I'm not familiar with that concept.
Frank
-----Original Message----- From: Mark Lindsey [mailto:lindsey at e-c-group.com] Sent: Saturday, March 08, 2014 10:34 AM To: Alex Balashov Cc: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Normally in the TDM world, you don't try to time a DS3 off anything on a DS3, including a DS1. You time a DS3 off a T1 transmitting all 1s, preferably one generated by a BITS clock.
As I think you alluded, the DS1 -- what you're using to derive timing -- is a layer above the T1 where the clock ticks happen.
But whatever it takes to discipline the internal 1.544 MHz clock to sync up with the transmitter will work. It's interesting that Cisco has this option.
Cisco TDM always seems a little out of step with traditional (and often overpriced) 1970s-thought-process TDM gear.
mark at ecg.co +12293160013 http://ecg.co/lindsey
On Mar 8, 2014, at 0:43, Alex Balashov <abalashov at evaristesys.com> wrote:
The T3's timing is logically independent of the subrate channels. The T3 is configured to take clock from the line. But the timing on the subrate DS1s should be identical, since they're all on the same DS3, right?
On 03/08/2014 12:37 AM, Frank Bulk wrote:
No, I was just wondering if there is generally one that carries the timing on a T3.
Frank
-----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Friday, March 07, 2014 11:33 PM To: Frank Bulk; voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
No particular reason for choosing that one. Should I have chosen another?
On 03/08/2014 12:28 AM, Frank Bulk wrote:
Thanks for sharing. Why did you choose that T1?
Frank
-----Original Message----- From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov Sent: Friday, March 07, 2014 1:33 PM To: voiceops at voiceops.org Subject: Re: [VoiceOps] Timing slips on subrate DS1s on CT3
Someone e-mailed me privately off-list with a link to:
http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-p
latforms/48567-clocking.html
Which clued me into the fact that I can take global TDM clocking off a particular T1:
tdm clock priority 1 6/0:1
So far, that seems to have fixed the slips! I'll see if it holds. Thanks a lot for the pointer!
-- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
participants (6)
-
abalashov＠evaristesys.com -
frnkblk＠iname.com -
jaredsmith＠jaredsmith.net -
lindsey＠e-c-group.com -
LRiemer＠bestline.net -
mark＠ecg.co