[Freeswitch-users] Why doesn't this call get answered?

[Steven Schoch]

This office has a bunch of Polycom SoundPoint IP 320 phones, and a single
Grandstream HT801 (connected to a FAX machine for outgoing FAXes).

I can make a call from the phones to outside numbers.
I can make a call from the HT801 to local phones.
But I can't call from the HT801 to outside numbers.

The last important thing that happens in the failed call is this:
2021-04-13 17:28:15.260844 [DEBUG] sofia.c:7406 Channel
sofia/external/<number> entering state [calling][0]

The difference between the work and not work seems to be this: When I call
from a phone to an outside number, it does this:

Local SDP:
v=0
o=FreeSWITCH 1618335260 1618335261 IN IP4 <external-IP>
s=FreeSWITCH
c=IN IP4 <external-IP>
t=0 0
m=audio 25104 RTP/AVP 0 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=sendrecv

When it tries to call from the HT801 to an outside number, it does this:

Local SDP:
v=0
o=FreeSWITCH 1618327543 1618327544 IN IP4 <external-IP>
s=FreeSWITCH
c=IN IP4 <external-IP>
t=0 0
m=audio 32552 RTP/AVP 0 8 102 9 101 103
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:102 opus/48000/2
a=fmtp:102 useinbandfec=1; maxaveragebitrate=30000; maxplaybackrate=48000;
ptime=20; minptime=10; maxptime=40; stereo=1
a=rtpmap:9 G722/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtpmap:103 telephone-event/48000
a=fmtp:103 0-16
a=ptime:20
a=sendrecv

Is that why it doesn't answer? If so, how do I change it?

I should mention that when I tried this at home, it worked, but when I
attempted to install it here at the bookstore, it didn't. The Comcast
router at my home is a little different; they use a Netgear router here;
and I may have upgraded Freeswitch between the time it worked and now.

-- 
Steve
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