TELES configuration
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TELES has some weirdness with SIP.
It reports that it sends calls from port 5060 but actually sends calls from a different port. In our case, it was 1831:
<--- SIP read from 181.29.146.70:1831 ---> ACK sip:393932891230@162.192.26.181:5060 SIP/2.0 Via: SIP/2.0/UDP 181.29.146.70:1831;branch=z9hG4bK00E0F51004B48887365D000000C5 Route: <sip:181.29.146.70:5060> From: <sip:4369910439372@181.29.146.70>;tag=00E0F51004B48887365D00001AEC To: <sip:393932891230@162.192.26.181>;tag=as7fcd3c74 Call-ID: 00E0F51004B48887365D000016D6@181.29.146.70 CSeq: 42891 ACK Max-Forwards: 70
Asterisk sees it as from 5060:
============== SIPCHANINFO =============== Peer IP: 181.29.146.70 Source IP: 181.29.146.70 From: sip:390331603040@181.29.146.70 Contact: sip:181.29.146.70:5060 Useragent: TELES.iSWITCH Peername: 181.29.146.70 T38Passthrough: 0 ==========================================
To accept calls from such a device, you need to set the correct port for it in MOR.