SIP Caller ID Name

[Scott Hanson]

                   Hello everyone,

I have a 3rd party PBX and Call Manager both using the same router for a SIP trunk to route calls between the 2 systems.  Call flow works great.  My issue is when the 3rd party PBX makes outbound calls to CM only the number they are calling shows up on the 3rd party phone, not the name. In the debug it just show the "To" field as To:  <sip:8520@AFL>.  I am am trying to figure out if this is something to be addressed on the 3rd party side, the router or CM.

Thanks in advance.  All replies rated.

[Tapan Dutt]

FROM field (name and Number) should be populated by the Calling Party. If their is no from FROM field check your 3rd Paty PBX.

6.21 From

   Requests and responses MUST contain a From general-header field,
   indicating the initiator of the request. The From field MAY contain
   the "tag" parameter. The server copies the From header field from the
   request to the response. The optional "display-name" is meant to be
   rendered by a human-user interface. A system SHOULD use the display
   name "Anonymous" if the identity of the client is to remain hidden.

   The SIP-URL MUST NOT contain the "transport-param", "maddr-param",
   "ttl-param", or "headers" elements. A server that receives a SIP-URL
   with these elements removes them before further processing.

   Even if the "display-name" is empty, the "name-addr" form MUST be
   used if the "addr-spec" contains a comma, question mark, or
   semicolon.



        From         =  ( "From" | "f" ) ":" ( name-addr | addr-spec )
                        *( ";" addr-params )
        addr-params  =  tag-param
        tag-param    =  "tag=" UUID
        UUID         =  1*( hex | "-" )


   Examples:


     From: "A. G. Bell" 
     From: sip:+12125551212@server.phone2net.com
     From: Anonymous 

Check RFC 2543

Tapan