SIP incoming number changed 2

[teletechman]

I have a customer that was told after the fact that her SIP proxy IP address was changed. Now when a caller calls in the DIDs do not work, everything goes to the main number. They can call out and receive calls to the main number fine but not to the DIDs. I have a trace that shows me calling in to the number 6174055803 it will see this as the to number but then will route via 6172328900 as a best match. Not sure what to look at. They have changed the proxy address in the SBC but the system still see the old proxy 204.11.148.40.
Mike

 

[acollard83]

One thing to check, what is set as the call routing method in the SIP Advanced tab on the SIP line? Also is there an SBC at the customers site or is the provider providing anything? What device is at 10.1.20.5 and 10.1.20.9?

 

[intrigrant]

Reduce the output of the monitor logs
- Disable all the other filters except the Call filter and the SIP filter
- make sure Targetting and ACD is enabled in the call filter
- disable Reg options in the SIP filter and disable SIP RX & SIP TX & STUN & SIP Dect

All the rest is garbage and makes the trace more difficult to analyze

Then describe what has happened in the trace e.g. at hh:mm:ss a call from zzzzzzzzzz arrives and it should go to yyyyyyyyyyy but it ended up to xxxxxxxxxxxx

 

[teletechman]

I found the issue with this, I made a change to the call routing method in the advanced tab. Not sure why this would make a difference if it was working before but with the change of the SIP proxy by the provider I changed the routing method to use the to header. Now the customer is able to use their DIDs.
Mike

 

[amriddle01]

Because their change in proxy was likely to a different piece of equipment, not just an address change.

 

[janni78]

The reason is that the SIP provider (or SBC) sends the main number (trunk number) in Request URI and the called number in the To header.
Since you routed on Request URI all calls ended up at the main number.
Most of the providers I use send the called number in both but there are those who do things differently =)

13:51:52 4262613255mS SIP Rx: UDP 10.1.20.9:5060 -> 10.1.20.5:5060
INVITE sip:6172328900@10.1.20.5;transport=udp SIP/2.0
From: <sip:6176897161@10.1.20.5;user=phone>;tag=204.11.148.40+1+886c4f93+ceccf5fc
To: "WS Development" <sip:6174055803@10.1.20.5>

"Trying is the first step to failure..." - Homer

 

[teletechman]

@janni78 Thanks for the info this will help in the future.
Mike