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IAD interconnect with IMS, the soft parameter configuration error lead to the phone under IAD caller ID display error.

Publication Date:  2012-10-09 Views:  93 Downloads:  0
Issue Description
Networking situation: IAD104H IMS (IP Multimedia Subsystem Network)
IAD software version: V300R001C03SPC100
Client needs IMS network users call each display cornets, but the reality is that regardless of the network users call each other or out network users call network users, all display +86 and the actual number.
Alarm Information
Handling Process
According to the client's problem description, can be judged the IAD should use the default value of the clip-mode soft parameters, and extract the value of the "P-Asserted-Identify" domain SIP protocol packets as caller number. Require the client to caught package, and analyze the information of the number carried in the SIP protocol packets to prove what is right. Executing the command
After “TERMINAL (advanced-config) # sip soft-parameter clip-mode From”, the problem is solved.
Root Cause
IAD interconnect with IMS uses the SIP protocol, the called get the caller ID display can be obtained from the two domains of the SIP protocol packets, "From" domain and the P-Asserted-Identify "domain. You can modify the IAD clip-mode soft parameters to modify from the SIP protocol packets which domain information can be used as Caller ID display, the parameters modify command as follows:
TERMINAL (advanced-config) # sip soft-parameter clip-mode
{<E> <PAI,From> (Initial: PAI)}:
The default is from the "P-Asserted-Identify" domain to get caller ID display