[Spce-user] Not passing CNAM information

Steve Saner ssaner at hubris.net
Tue Aug 21 11:01:37 EDT 2018

On 08/21/2018 03:59 AM, Daniel Grotti wrote:
> Can you provide some example of what information you should pass to the 
> user?
> Thanks,
> Daniel

Here are the SIP headers of the INVITE from the peer. Notice the From 
header (names and numbers changed to protect the innocent):

INVITE sip:11235551234 at sip.example.com:5060 SIP/2.0
Via: SIP/2.0/UDP;branch=z9hG4bK04B9504f83f2bb01fa4
From: "MY NAME    " <sip:11234445555 at>;tag=gK0407b07d
To: <sip:11235551234 at sip.example.com>
Call-ID: 1550071232_132036005 at
CSeq: 351558 INVITE
Max-Forwards: 70
Accept: application/sdp
Contact: "MY NAME    " <sip:11234445555 at>
Remote-Party-ID: "MY NAME    " <sip:11234445555 at>;privacy=off
Supported: replaces
Content-Length:   326
Content-Disposition: session; handling=required
Content-Type: application/sdp

The SIP headers that are then passed to the user are as follows:

INVITE sip:11235551234 at;transport=UDP SIP/2.0
Via: SIP/2.0/UDP;branch=z9hG4bK784a.888030fec8faa1a23800660657515737.0
Via: SIP/2.0/UDP;received=;branch=z9hG4bKF0rzjabv;rport=5080
From: <sip:11234445555 at>;tag=42902B8F-5B7C26D10008B7A2-13962700
To: <sip:11235551234 at>
Call-ID: 124565839_134054997 at
Max-Forwards: 69
Accept: application/sdp
Supported: replaces
P-Asserted-Identity: <sip:11235551234 at>
Content-Type: application/sdp
Content-Length: 361
<sip:ngcp-lb at;ngcpct=7369703a3132372e302e302e313a35303830>

Note that the "MY NAME" name has been removed from the From header. This 
is the caller id name information that can be displayed on the user's 
phone. That information is also in other headers, not of which are 
passed on either.



> On 08/21/2018 01:15 AM, Steve Saner wrote:
>> I discovered today that my Sipwise mr5.5.5 system is not passing CNAM 
>> information coming from a peer to a SIP user. So, I guess my questions 
>> are:
>> 1. Should it by default?
>> 2. What settings do I need to look for that affect this? I haven't 
>> found anything obvious.
>> Steve
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Steven Saner <ssaner at hubris.net>                      Voice:  316-858-3000
Director of Network Operations                          Fax:  316-858-3001
Hubris Communications                                http://www.hubris.net

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