[Asterisk-Users] How to see CODEC which is in use?

[Goran Dj.]

How can I see which codec is in use during conversation. I can see (for
example) which codecs are negotiated before SIP connection, but I don't
know which is chosen:

12 headers, 12 lines
Found RTP audio format 3
Found RTP audio format 97
Found RTP audio format 2
Found RTP audio format 101
Peer audio RTP is at port 217.10.79.30:15666
Found description format GSM
Found description format iLBC
Found description format G726-32
Found description format telephone-event
Capabilities: us - 0x693(G723|GSM|G726|LPC10|SPEEX|ILBC), peer -
audio=0x412(GSM|G726|ILBC)/video=0x0(EMPTY), combined -
0x412(GSM|G726|ILBC)
Non-codec capabilities: us - 0x1(G723), peer - 0x1(G723), combined -
0x1(G723)
set_destination: Parsing <sip:10000 at 217.10.79.9;ftag=as61888e0f;lr=on>
for address/port to send to
set_destination: set destination to 217.10.79.9, port 5060
Transmitting:
ACK sip:10000 at sipgate.de SIP/2.0
Via: SIP/2.0/UDP 213.240.3.178:5060;branch=z9hG4bK7c84b82f
Route: <sip:10000 at 217.10.79.30>
From: "Test" <sip:xxxxxxx at sipgate.de>;tag=as61888e0f
To: <sip:10000 at sipgate.de>;tag=as2fb68341
Contact: <sip:xxxxxxx at 213.240.3.178>
Call-ID: 1f85a3e41713ae3273aca539042390b1 at 213.240.3.178
CSeq: 103 ACK
User-Agent: Asterisk PBX
Content-Length: 0