External Phone Number Mask stops out bound calls

Answered Question

Fairly easy question I assume ut I need to know why adding an external phone number would would stop outbound calls. It is an H323 gateway with a PRI, 4 digit DNs (6000-6999) and when we add 716422XXXX the users can not make outbound calls. Any ideas are appreciated.

Correct Answer by Brandon Buffin about 7 years 4 months ago

No additional dial peer required. If you are only changing the mask, it is almost certainly being blocked by the carrier. Try "debug isdn q931" and look at the diconnect cause code. The following link should help.

http://www.cisco.com/en/US/tech/tk801/tk379/technologies_tech_note09186a008012e95f.shtml

Brandon

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Brandon Buffin Fri, 10/09/2009 - 09:22

Check with your carrier. It could be that they are blocking the sending of specific outbound caller ID.

Hope this helps.

Brandon

That was my thought at first that the carrier was blocking this, would I get a certain display in debug if the carrier was blocking the number. It is an h323 gatewat and the only thing I do different is add a mask. A co-worker thought that I would need a dial peer that matches the mask, I assume this is not true?

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