Trunk SIp incoming call

[Juraj Papic]

Hi all, 

I have a sip trunk connected to a 3er party PSTN (NEC) When the customer dials, from the NEC side to the Cisco they dial 6XXXX, In the cucm where should I configure the incoming call number from the NEC so I can remove the 6 and live the 4 digits?

Thanks. 

[Chris Deren]

You can either build a translation pattern that strips the 6 or on the SIP trunk --> Inbound Calls set the "Significant Digits" to 4 assuming all calls should only get last 4 digits.

[Juraj Papic]

Hello Chris,

If I had to create more then one traslation. that mas go via the same sip trunk?

example:

6XXXX will via the sip to the cisco cucm.

9XXXXXXX this will go to the E1 connected to the gateway connected to the cisco device.

thanks. 

[Chris Deren]

That is where calling search spaces and partitions come in. If you need to isolate these translations you assign them to different partitions that are only reachable by respective trunks' CSSes. For example NEC translation 6.XXXX would be assigned to NEC_Inbound_PT, this TP strips preDot.  The SIP trunk would have an Inbound CSS NEC_Inbound_CSS that lists only the NEC_Inbound_PT partition. Then you do something similar for the other trunk.  Lastly, make sure you assign proper CSS to the 6.XXXX translation pattern which has access to the final extension's partition. 

[Juraj Papic]

Hello,

I don't want to isolate, I was looking to get this 2 incoming numbers via the same SIP trunk.

Thanks

[Chris Deren]

Then put it in the same partition since they dont overlap, one starts with 6 the other with 9, no issues there.

[Juraj Papic]

But I would have to create a route pattern, o a translation pattern?

And how can I add them to the incoming calls from the sip trunk.

Thanks

[Chris Deren · Accepted solution]

Route Patterns are for routing to external destinations (outbound), since your question was about incoming calls and stripping digits from them the answer is translation patterns.

[Juraj Papic]

Thanks for the help