ISDN PRI T2 Incoming Calls with Echo
Posted: 03 Jan 2021 16:22
Hello Guys,
Hope you guys are doing well and wishing you a Happy New Year 2021 !! with a lot of health and hoping this one is better than the last one.
I am having a issue at a customer site where random incoming calls cannot been heard. When receiving an incoming call, we can see that the call is established and connected , but cannot hear each other, it is some kind of echo where i can just hear myself speaking. From 10 calls , 2 calls are presenting this issue approximately.
The customer has an OXE R12 with a T2 Trunk Group.
I took some t3 traces and I´ve been analyzing them but with no success. The only difference seen is in the normal call clearing step where one has a Progress ID and the other one not.
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=2) 8a 90 -> [90] NORMAL CALL CLEARING
| IE:[1e] PROGRESS_ID (l=2) 82 88
|______________________________________________________________________________
and
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=2) 81 90 -> [90] NORMAL CALL CLEARING
|______________________________________________________________________________
Attached the traces, hoping someone can help.
Regards,
Enrique
Hope you guys are doing well and wishing you a Happy New Year 2021 !! with a lot of health and hoping this one is better than the last one.
I am having a issue at a customer site where random incoming calls cannot been heard. When receiving an incoming call, we can see that the call is established and connected , but cannot hear each other, it is some kind of echo where i can just hear myself speaking. From 10 calls , 2 calls are presenting this issue approximately.
The customer has an OXE R12 with a T2 Trunk Group.
I took some t3 traces and I´ve been analyzing them but with no success. The only difference seen is in the normal call clearing step where one has a Progress ID and the other one not.
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=2) 8a 90 -> [90] NORMAL CALL CLEARING
| IE:[1e] PROGRESS_ID (l=2) 82 88
|______________________________________________________________________________
and
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=2) 81 90 -> [90] NORMAL CALL CLEARING
|______________________________________________________________________________
Attached the traces, hoping someone can help.
Regards,
Enrique