What does this mean?

General Help
1

Arch = x86_64
OS = CentOS-6.3 (freepbx)
Asterisk = 11.3.0
FreePBX = 2.11.0.0rc1.2

SIP/RTP Device = SNOM-320

Problem:
Phone cannot place calls through FreePBX. It can receive and pickup incoming calls and internal calls. When dialling out I get this:

  == Using SIP RTP TOS bits 184
  == Using SIP RTP CoS mark 5
[2013-04-19 12:04:23] DEBUG[1644][C-00000000]: sip/sdp_crypto.c:285 sdp_crypto_process: Accepting crypto tag 1
[2013-04-19 12:04:23] DEBUG[1644][C-00000000]: sip/sdp_crypto.c:310 sdp_crypto_offer: Crypto line: a=crypto:1 AES_CM_128_HMAC_SHA1_32 inline:0VclAVtDMOVI2WlbA3w9WImRqOBrWZpffjjrE+Iy
[2013-04-19 12:04:23] WARNING[1644][C-00000000]: chan_sip.c:10452 process_sdp: We are requesting SRTP for audio, but they responded without it!
[2013-04-19 12:04:23] WARNING[1644][C-00000000]: chan_sip.c:10452 process_sdp: We are requesting SRTP for audio, but they responded without it!

Is this a configuration issue with the SOMA-320? What specifically is wrong with its set-up or what configuration change in FreePBX will allow it to work?

2

For secure RTP the SNOM-320 must be configured to enable it. This is done on an identity-by-identity basis in the RTP profile page using the web interface. Reportedly, there is no way to set this from the phone itself.

	RTP Identity Settings:	
	Codec:	g722,pcmu,pcma,gsm,g726-32,aal2-g726-32,g723,g729,telephone-event 
	Packet Size:	        20ms
	Full SDP Answer:	on 
	Symmetrical RTP:	off 
	RTP Encryption:	        on 
	G.726 Byte Order:	RFC3551
	SRTP Auth-tag:	        AES-32
==>	RTP/SAVP:	        Mandatory
	Media Transport Offer:	UDP
	Media Transport Offer Setup:	 Active
	Multicast relay address: