I have a Snom 300, when I tested the call If a caller calls from a landline I hear an echo in the Snom, plus the caller can hear a slight echo (however Im thinking this is to do with the echo on the snom).
If the caller is from a mobile, the snom doesnt have an echo but the echo is now in the callers mobile.
The weird thing is for both mobile and landline the softphone works fine with no echo on both sides. I am using the NAT proxy on both the softphone and the snom. Thats why I think its the way I have my snom setup.
Can anyone give me a hand in assisting correct setup of this phone, it is setup from when I got it from voipfone so it must be just a setting or something which is causing it.