NRS and 3CX 2

[atascoman]

Hello. Anybody ever tried to get one of those 3CX SIP phone systems to register with an NRS server as a gateway endpoint or any other non-Nortel SIP phone system?

I have tried setting it up as a dynamic and as a static SIP endpoint with no luck.

 

[mjclothier]

The only thing I can think to try is to turn on SIP messeges.
On your NRS when the SIP phone is attempting to register turn on the following messages from the vxshell:
syslogLevelSet tSPReg,7
syslogLevelSet tSPReg,6 sets the messaging back to info from debug.
These message might show you why it is failing, or even if it is sending a registration request.

If the you have the SIP phone configured for static in the NRS turn on the following messge in the vxshell on you cs1k leader:
SipNpmDebugPrint=1
SipNpmDebugPrint=0 disables the messaging.
This will how if the invite is being re-directed by the NRS, and if so the response received back from the SIP phone.

Low traffic periods are best for the SipNpmDebugPrint command.

 

[pronei]

to get a 3rd party sip phone to register to your NRS, you MUST have a valid A & PTR DNS record for NRS.

Example: nrs.company.com -> has to be routable and nrs.company.com will also have to be your SIP domain.

 

[atascoman]

Thanks guys, very helpful info. I had not seen the info about the DNS before, but it makes sense. I will check that. So I should use the nrs.company.com as my SIP domain on the SIP PBX instead of an IP address as a best practice? Should also use the nrs.company.com as the registration address as well or would it be better to use the IP?

I am new to SIP so I am trying to see all the pieces and how best to make them interact.

 

[pronei]

Always use domain if possible.