topic Re: Translation Patter to remove + going to ISDN in IP Telephony and Phones

Translation Patter to remove + going to ISDN

Brandon Rebbe — Fri, 18 Dec 2020 23:45:47 GMT

We have a local PSTN gateway for Webex call with an ISDN PRI connected. Incoming calls work great and are routed to Webex Call. But when i try to dial out from a phone i get an error. Looked at the Q.931 and it is showing invalid elements and it looks like WxC is putting a + in front of the called and calling number which my provider does not like.

I am trying to make a translation patter to remove it.

so i need to take +12314516657 to 12314516657

I have tested this Rule 1 /^+\/ // / in an application i found to test translations and it works, but the router will not accept it.

i get
Webex-Call-1(cfg-translation-rule)#Rule 1 /^+\/ // /
% *+ operand could be empty ^
% Invalid input detected at '^' marker.

Anyone have a better way to do this?

Re: Translation Patter to remove + going to ISDN

Brandon Rebbe — Sat, 19 Dec 2020 01:03:07 GMT

I was able to figure out how to get the digits stripped and it is now working.

But when i test out forwarding my phone to a cellphone for instance the ITSP blocking it becuase the calling party number and the redirecting number are the same. When we used CUCM we had a fix for this but i am not sure who to fix this with dial peers or Translation patterns.

Re: Translation Patter to remove + going to ISDN

Nithin Eluvathingal — Sat, 19 Dec 2020 01:13:10 GMT

use the below.

voice translation-rule 1

rule 1 /\+$.*$$/ /\1/

jlrvg#test voice translation-rule 2 +12314516657

Matched with rule 1

Original number: +12314516657 Translated number: 12314516657

Original number type: none Translated number type: none

Original number plan: none Translated number plan: none

Re: Translation Patter to remove + going to ISDN

Nithin Eluvathingal — Sat, 19 Dec 2020 01:15:34 GMT

use first redirecting/last redirect on gateway to use to use the desk phone extension when forwarding.

Re: Translation Patter to remove + going to ISDN

Brandon Rebbe — Sat, 19 Dec 2020 22:59:55 GMT

How would i accomplish that? Are there commands?

Re: Translation Patter to remove + going to ISDN

Nithin Eluvathingal — Sun, 20 Dec 2020 05:55:31 GMT

Hope this is a CUCM setup, u can do it from the gateway page on CUCM.

Re: Translation Patter to remove + going to ISDN

Brandon Rebbe — Sun, 20 Dec 2020 17:01:39 GMT

Unfortunately it is not CUCM. This is a local PSTN gateway feeding a Webex Call environment. I wish it was CUCM, i would have it fixed already.

Re: Translation Patter to remove + going to ISDN

Nithin Eluvathingal — Mon, 21 Dec 2020 02:05:25 GMT

There could be some sort of option to translate. can you share the gateway model.

Re: Translation Patter to remove + going to ISDN

Nathan Gageby — Tue, 22 Dec 2020 18:02:51 GMT

The fix might be a sip-profile to change all redirecting numbers to a main line. Information on this can be found here - https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-border-element/118825-technote-sip-00.html#anc12 - I have found that many carriers want this set a certain way when calls are forwarded. The commands would look something like this.

voice class sip-profiles 1
 request ANY sip-header Diversion modify "sip:(.*)@" "sip:3045551212@"