I'm not sure if this has come up here before, I couldn't find anything specific, but I'm seeing an issue where calls originating from T-Mobile to other carriers are not generating ringback. The call is indeed ringing on the other end, but on the T-Mobile phone, it's just dead air until the person on the other end answers the call. It's not all calls, but it is reproducible to certain phone numbers and reproducible using various T-Mobile customers. It's not limited to a single phone T-Mobile number/customer. Further troubleshooting has shown that calls from other providers (ie AT&T, Verizon Wireless) do not have this problem to the same numbers the issue can be reproduced from T-Mobile. It's only calls from T-Mobile numbers to other phone numbers outside of T-Mobile so far. The no ringback issue seems to occur whether you're on wifi calling or on a cell tower. All of the T-Mobile users we can reproduce the issue with are in Southern California. Not sure if any of this matters. I tried to deal with customer service and opened a ticket that supposedly was escalated to engineering, but of course that fell on deaf ears and the response I got was basically "Can't reproduce, it's not our problem" 8-/ ... Any T-Mobile engineers on this list that could help or any recommendations on how to raise attention to this problem to someone at T-Mobile with a clue? Gabe
I?ve experienced this as a T-Mobile customer in Georgia, at least calling my parents locally who are on Verizon. I get +/- 1 ringback tone and then dead air until they answer. I was wanting to ask the list if this is a ?thing? or just a peculiarity of our area.
On Jan 31, 2022, at 2:05 PM, Gabriel Kuri via VoiceOps <voiceops at voiceops.org> wrote:
I'm not sure if this has come up here before, I couldn't find anything specific, but I'm seeing an issue where calls originating from T-Mobile to other carriers are not generating ringback. The call is indeed ringing on the other end, but on the T-Mobile phone, it's just dead air until the person on the other end answers the call. It's not all calls, but it is reproducible to certain phone numbers and reproducible using various T-Mobile customers. It's not limited to a single phone T-Mobile number/customer. Further troubleshooting has shown that calls from other providers (ie AT&T, Verizon Wireless) do not have this problem to the same numbers the issue can be reproduced from T-Mobile. It's only calls from T-Mobile numbers to other phone numbers outside of T-Mobile so far.
The no ringback issue seems to occur whether you're on wifi calling or on a cell tower. All of the T-Mobile users we can reproduce the issue with are in Southern California. Not sure if any of this matters.
I tried to deal with customer service and opened a ticket that supposedly was escalated to engineering, but of course that fell on deaf ears and the response I got was basically "Can't reproduce, it's not our problem" 8-/ ...
Any T-Mobile engineers on this list that could help or any recommendations on how to raise attention to this problem to someone at T-Mobile with a clue?
Gabe
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
-- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
A few people have reported this as a fault on our end. But I've also heard it from friends who use T-Mobile and the complainers agree it sometimes happens to numbers that are not ours. The complaints originate from Los Angeles, Vegas, Phoenix, and others. So it's just more T-Mobile/Sprint idiocy all over. On Mon, Jan 31, 2022 at 12:21 PM Alex Balashov <abalashov at evaristesys.com> wrote:
I?ve experienced this as a T-Mobile customer in Georgia, at least calling my parents locally who are on Verizon. I get +/- 1 ringback tone and then dead air until they answer. I was wanting to ask the list if this is a ?thing? or just a peculiarity of our area.
On Jan 31, 2022, at 2:05 PM, Gabriel Kuri via VoiceOps < voiceops at voiceops.org> wrote:
I'm not sure if this has come up here before, I couldn't find anything specific, but I'm seeing an issue where calls originating from T-Mobile to other carriers are not generating ringback. The call is indeed ringing on the other end, but on the T-Mobile phone, it's just dead air until the person on the other end answers the call. It's not all calls, but it is reproducible to certain phone numbers and reproducible using various T-Mobile customers. It's not limited to a single phone T-Mobile number/customer. Further troubleshooting has shown that calls from other providers (ie AT&T, Verizon Wireless) do not have this problem to the same numbers the issue can be reproduced from T-Mobile. It's only calls from T-Mobile numbers to other phone numbers outside of T-Mobile so far.
The no ringback issue seems to occur whether you're on wifi calling or on a cell tower. All of the T-Mobile users we can reproduce the issue with are in Southern California. Not sure if any of this matters.
I tried to deal with customer service and opened a ticket that supposedly was escalated to engineering, but of course that fell on deaf ears and the response I got was basically "Can't reproduce, it's not our problem" 8-/ ...
Any T-Mobile engineers on this list that could help or any recommendations on how to raise attention to this problem to someone at T-Mobile with a clue?
Gabe
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
-- Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
Considering it appears to be more of a widespread problem, any ideas on how to get T-Mobile's attention? Anyone have any contacts or a way to escalate to their netops or engineering team? I thought about posting to nanog, but figured they would redirect me here. I'm not sure nanog would be the right place? Gabe On Mon, Jan 31, 2022 at 12:17 PM Carlos Alvarez <caalvarez at gmail.com> wrote:
A few people have reported this as a fault on our end. But I've also heard it from friends who use T-Mobile and the complainers agree it sometimes happens to numbers that are not ours. The complaints originate from Los Angeles, Vegas, Phoenix, and others. So it's just more T-Mobile/Sprint idiocy all over.
On Mon, Jan 31, 2022 at 12:21 PM Alex Balashov <abalashov at evaristesys.com> wrote:
I?ve experienced this as a T-Mobile customer in Georgia, at least calling my parents locally who are on Verizon. I get +/- 1 ringback tone and then dead air until they answer. I was wanting to ask the list if this is a ?thing? or just a peculiarity of our area.
On Jan 31, 2022, at 2:05 PM, Gabriel Kuri via VoiceOps < voiceops at voiceops.org> wrote:
I'm not sure if this has come up here before, I couldn't find anything specific, but I'm seeing an issue where calls originating from T-Mobile to other carriers are not generating ringback. The call is indeed ringing on the other end, but on the T-Mobile phone, it's just dead air until the person on the other end answers the call. It's not all calls, but it is reproducible to certain phone numbers and reproducible using various T-Mobile customers. It's not limited to a single phone T-Mobile number/customer. Further troubleshooting has shown that calls from other providers (ie AT&T, Verizon Wireless) do not have this problem to the same numbers the issue can be reproduced from T-Mobile. It's only calls from T-Mobile numbers to other phone numbers outside of T-Mobile so far.
The no ringback issue seems to occur whether you're on wifi calling or on a cell tower. All of the T-Mobile users we can reproduce the issue with are in Southern California. Not sure if any of this matters.
I tried to deal with customer service and opened a ticket that supposedly was escalated to engineering, but of course that fell on deaf ears and the response I got was basically "Can't reproduce, it's not our problem" 8-/ ...
Any T-Mobile engineers on this list that could help or any recommendations on how to raise attention to this problem to someone at T-Mobile with a clue?
Gabe
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
-- Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
participants (3)
-
abalashov＠evaristesys.com -
caalvarez＠gmail.com -
gkuri＠ieee.org