I have an Odroid HC2 (odroidxu4; armv7l) and I have my sip registered, but I’m getting this error when I try to call from another phone (not part of asterisk):
[Apr 25 12:57:00] NOTICE[27691][C-00000001]: chan_sip.c:10798 process_sdp: No compatible codecs, not accepting this offer!
I think it’s because I don’t have g729 codec installed maybe? But when I type in ffmpeg -codecs, it shows D.A.L. g729 G.729 in the list. I’m unsure if that’s relevant and whether that means I have g729 installed, because I read other stuff online saying that I have to compile g729 for arm chips. I tried following these instructions, but got stuck on when I type make under Compile g279 codecs, I get the error (eventually): codec_g72x.c:21:30: fatal error: asterisk.h: No such file or directory. So I scrapped that idea.
Here is what I have in sip.conf (minus my username and password). Freephoneline.ca said for “used preferred codec” is G711u/PCMU or G729a. Sorry if my sip.conf looks wrong. I tried to keep the defaults what was originally in sip.conf, plus what this person said they did for freephoneline.ca:
[general]
context=public
allowoverlap=no
udpbindaddr=0.0.0.0
tcpenable=no
tcpbindaddr=0.0.0.0
transport=udp
srvlookup=yes
register => 15555555555:password@voip.freephoneline.ca/15555555555
context=from-trunk
host=voip.freephoneline.ca
username=15555555555
secret=password
type=friend
insecure=port,invite
dtmfmode=auto
disallow=all
allow=ulaw&g729
fromdomain=freephoneline.ca
secret=[password]
type=user
context=from-trunk
insecure=port,invite
fromdomain=freephoneline.ca
registertimeout=3600
registerexpiry=3600
[basic-options](!)
dtmfmode=rfc2833
context=from-office
type=friend
[natted-phone](!,basic-options)
directmedia=no
host=dynamic
[public-phone](!,basic-options)
directmedia=yes
[my-codecs](!)
disallow=all
allow=ilbc
allow=g729
allow=gsm
allow=g723
allow=ulaw
[ulaw-phone](!)
disallow=all
allow=ulaw