[SR-Users] cisco spa502g issues

[Daniel-Constantin Mierla]

Hello,

maybe the new phones do STUN and or the ALG breaks somehow the
signaling. You should send the ngrep output taken on sip server for such
a call in order to be able to analyze what can happen:

ngrep -d any -qt -W byline port 5060

Cheers,
Daniel


On 17/03/2017 06:32, ben at wtf.com.au wrote:
> Hi guys,
>
> we have a bunch of SIP phones behind a fire wall, with our kamalio
> server out on the internet. Most of them are the older SPA92x series,
> but we have some new SPA502g's.
>
> We have no problems calling between 92x and 502's. How ever the 502's
> calling each other do not get voice path.
>
> I have noticed that the phones REGISTER differently:
>
>          AOR:: 5546@<our domain>
>                  Contact:: sip:5546@<OUR OFFICE IP>:1032 Q=
>                          Expires:: 180
>                          Callid:: 4754c4f9-c67e1018 at 10.0.41.29
>                          Cseq:: 43112
>                          User-agent:: Cisco/SPA502G-7.6.2a
>                          State:: CS_DIRTY
>                          Flags:: 0
>                          Cflag:: 0
>                          Socket:: udp:<OUR SR IP>:5060
>                          Methods:: 6815
>
>
>          AOR:: 5590 at sip.skunkworks.net.au
>                  Contact:: sip:5590 at 10.0.41.14:5060 Q=
>                          Expires:: 1154
>                          Callid:: 24435738-224b06db at 10.0.41.14
>                          Cseq:: 8012
>                          User-agent:: Linksys/SPA921-5.1.8
>                          Received:: sip:<OUR OFFICE IP>:1026
>                          State:: CS_SYNC
>                          Flags:: 0
>                          Cflag:: 64
>                          Socket:: udp:<OUR SR IP>:5060
>                          Methods:: 4767
>
> The older 921 has its private IP in the contact, where as the newer
> 502 has the external IP of our office in the contact.
>
> Our file wall is a Watchguard T-10 (latest updates etc) with the
> SIP-ALG running.
>
> Any thoughts on where to start looking ?
>
> Cheers,
>
> Ben.
>
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-- 
Daniel-Constantin Mierla
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