C927-4PLTEGB RTP sessions limit

[yoav-shneor]

Hi,

I experience problems with RTP concurrent sessions on a C927.
The problem is that druing calls one side becoms silent for 3-4 secounds and then he comes back.
It can happen 2 or 3 times in a single converation.
The cal doesnt fall so it is not a SIP problem.
Something wrong with RTP sessions.
There is no QOS or Bandwidth problem.
nothing is the logg.
Low CPU.
Phones and switches are all cisco and works good on different callcenter.

[M02@rt37]

Hello @yoav-shneor 

Ensure that the network is stable and has enough bandwidth to support the RTP sessions. You can use a network analyzer tool to monitor the network traffic and check for any packet loss or latency issues. Also, check the phone settings and ensure that they are correctly configured. Verify that the correct codec is being used for the RTP sessions and that there are no conflicts with other settings.

[yoav-shneor]

Hi, TNX for answering ,
The line is purly for VoIP , Configured 50Mbit symetric and works less then 5Mbit so enough bandwidth for RTP sessions.
I have packet loss But i cant find any explanation for them on C927 branch side so this is why I am looking for the problem maybe on the server side and maybe the router itself.
Phone settings and codec are also correct, it is a part of a huge VoIP netwok, thousends of lines configured the same except for the C927
Do you know any commands except for netflow that show RTP behaviur ?

[Justinsmith34]

it sounds like you are experiencing issues with RTP concurrent sessions on a C927. Specifically, one side of the call becomes silent for 3-4 seconds before coming back, and this can happen 2 or 3 times in a single conversation. This is not a SIP problem, as the call doesn't fall. It seems that there is something wrong with the RTP sessions fr legends car list.

You mentioned that there are no QoS or bandwidth problems and nothing is appearing in the logs. Additionally, the CPU is low, and the phones and switches are all Cisco and work well in other call centers.

Without more information, it is difficult to determine the root cause of the issue. However, some potential areas to investigate could include the network configuration, firewall settings, and any potential conflicts between the C927 and other devices in the network.

I recommend consulting with a network specialist or reaching out to Cisco support for further assistance in troubleshooting the issue.

I hope this helps!