UC540 behind SR520 - inbound SIP not working, outbound SIP no RTP
I am putting together a site for a customer with a UC540 (8.0.2) behind an SR520 (12.4(24)t3-ADV-IP-SERV-CRYPTO). Everything seems to work great in passing data through, but voice is a no go. From my experience with the SA520, I had to create static routes for the three VLANs from the UC540. When I went to do this on the SR520, there was already a static route for 192.168.10.0 for the SR520's vlan75. I went ahead and added 10.1.1.0 and 10.1.10.0 and pointed them toward 192.168.75.2 (UC540's WAN IP) as their gateway. In addition, I configured port forwarding in NAT to forward all traffic on port 5060 (TCP and UDP) to forward through the SR520 to the UC540 (192.168.75.2).
SIP trunk - NexVortex
1. Inbound calls - no worky
I removed the two new SIP source groups created by CCA as follows, but the normal one that I usually see (CCA_SIP_SOURCE_GROUP) didn't appear to exist:
UC540(config)#no voice source-group CCA_SIP_SOURCE_GROUP source ip group CCA_SIP_SOURCE_GROUP does not exist
Are there other SIP source groups that exist that could be preventing this?
2. Outbound calls - no audio
I usually configure this setup with an SA500 in front. In those cases, I have to forward RTP traffic in addition to SIP traffic to make audio work. On the SR520, however, I can't figure out how to add a range of ports and it would be impossible to add several thousand ports into NAT using CCA. Any help on this one?
Re: UC540 behind SR520 - inbound SIP not working, outbound SIP n
Should have troubleshot a little longer. The incoming dialing issue was due to me moving faster than the SIP provider. The phone numbers had not been routed properly. The outbound audio issue was the fact that I needed to strip the second "c" header with the following set of commands:
UC540(config)# UC540(config)#voice class sip-profiles 1 UC540(config-class)#request ANY sdp-header Connection-info remove UC540(config-class)#response ANY sdp-header Connection-info remove UC540(config-class)#exit UC540(config)#voice service voip UC540(conf-voi-serv)#sip UC540(conf-serv-sip)#sip-profiles 1 UC540(conf-serv-sip)#exit UC540(conf-voi-serv)#exit UC540(config)#exit UC540#
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