I have registered two IP phones to my Asterisk Server13.8-cert4:
- Zoiper (Softphone)
- Grandstream (Hardphone)
both are successfully registered to asterisk server, checked by ’sip show peers’, gives:
…comedia status …
i am facing two issues here:
making call from Grandstream to Zoiper failes with output:
chan_sip.c:process_sdp: rejecting secure audio stream without encryption details…
how to enable sdp protocol?
making call from Zoiper to Grandstream does not initiate communication i.e on picking credal call hangsup with:
everyone is busy at this time
—Auto Fallthrough, Channel ‘SIP/Zoiper-00000088’ status is ‘CHANUNAVAIL’
i think both issues are linked. how to fix them?
i am using very basic PBX server with sip.conf:
exten => 3010,1,Dial(SIP/Zoiper,20)
exten => 3011,1,Dial(SIP/Gstream,20)