Cisco SPA504G voice problem

[eliosfederico]

Hi everyone,

I bought the SPA504G and I noticed an annoying problem.

I start with saying that me and the other party use only the G722 HD codec. 

During a call if I talk while the other is talking, the voice of the other party loses quality, like if temporarily the codec would become something like G711. After 1 second the voice returns normal, until our voices re-overlap. 

Before the Cisco I had a Gigaset N300A and I didn't have this problem.

Small update: I noticed that if I lover the input gain of the Cisco's handset, then the problem appears less often. 

Any theories?

Thanks

[bittrekker]

What firmware version are you on?

[eliosfederico]

7.6.1

[Dan Lukes]

Well, it's either firmware bug or a network issue. We are unable to debug firmware issues, thus we should confirm or reject second hypothesis.

It require full network dump of affected call - SIP packets, RTP packets, syslog&debug packets (with debug turned on, highest level).

[eliosfederico]

I can do that for you. Can you tell me step by step how to do what you asked?

Thanks

[Dan Lukes]

According syslog&debug read Debug and syslog Messages from the SPA3xx, SPA5xxG, SPA9xx, & WIP310 IP Phones

To capture packets you need a computer connected to appropriate place of your network and packet capturing software running on it. I can't provide step by step instruction as I know no your network topology nor the operating system you are running on the capturing computer. Ask your local network administrator for help.