Hi,
I purchased aastra-9133i phone for my asterisk server. everything is fine except the .gsm sounds are not playing properly. I am not sure how to fix this problem. is there a seeting i can make in aastra.cfg to enable .gsm on this phone? Please help, otherwise i need to return the phone and vendor takes 15% re-stocking fee 
thanks
sekhar.
gsm sounds have nothing to do with the phone, as asterisk talk to the phone in ulaw. Are you sure its JUST that phone?
FWIW i had a similar problem on a server recently (gsm sounds wouldn’t play no matter what), recompiling fixed it…
Hi IronHelix,
Let me re-compile asterisk on my server.
Below was the error i see now. I hope this gets cleared after re-compile.
Aug 5 04:06:25 WARNING[27726]: channel.c:2341 set_format: Unable to find a codec translation path from g723 to gsm
thanks
sekhar.
ahh, thats a different problem. I had disc corruption due to a power failure. You are misconfigured 
in sip.conf for the phone entry add the following:
disallow=all
allow=ulaw
allow=alaw
this will force ulaw or alaw codec, should fix you right up 
Hi IronHelix,
Thanks for the information. I changed the configuration in sip.conf file. Also, today aastra customer support replied to my email to add below setting to my aastra.cfg file.
sip use basic codecs: 1
with this the problem got resolved.
thanks for your help. You always replies to my queries. Thanks a lot. 
Sekhar.