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  1. Problems with Avaya CS1000 adding phone-context=cdp.udp

    I have a SIP trunk between AVAYA CS1000 and 3cx.....when a call comes in from the CS1000 it is adding phone-context=cdp.udp to the TO: Field in the INVITE.....Does anyone know to strip this out of the TO: Field Here is the LOG I replaced the Hostname and the IP addresses to protect the...

  2. Issues with Avaya Trunk and 3CX

    We are trying to connect a AVAYA-SM-6.1.5.0.615006 into our 3CX using a SIP Trunk. We have set up the connection as a VOIP Provider and the connection goes green but when we send a call from Avaya to 3CX we get "Unidentified incoming call. Review INVITE and adjust source identification...

  3. CISCO SIP NO RTP PACKETS

    I found two issues that was caused the lost RTP packets. The first I spoted in the 3csx log when the call started the CISCO phone sent the call set up info using TCP. The calls that worked the liksys sent this using UDP once i changed the CISCO phone to UDP the calls would go through but still...

  4. CISCO SIP NO RTP PACKETS

    Thank you leejor I will run the firewall checker and look into any ports that are blocked. I am not running any firewall on my 2811. Are these ports block automatically? Do I need to open these specfic ports up? It seems odd that the RTP stream is working when you call from the linksys phone...

  5. CISCO SIP NO RTP PACKETS

    I have CCM 4.1 going through a 2811 which has a SIP trunk to 3CX. I have a Linksys IP phone and a 3CX softphone connected to 3cx The TRUNK is regsitered and outbound calls ......from 3cx to Cisco Phones work well but when I call from CISCO to 3CX the phone will ring but when you answer it the...
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