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nhoague

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Hey guys,

So sometimes phone calls come in with a plus sign (+) in front of the number, like this +15551231234. I thought to myself not a problem, I'll just strip off the first digit in the call routing. This works great, and removes the plus sign. So now the number is 15551231234. Perfect.

Sometimes the number comes in without even a plus sign. So 15551231234 becomes 5551231234. Ok not a problem either. I have a Cisco dial plan that is able to dial those numbers.

However, SOMETIMES, the number comes in without even a "1" in front of it. So 5551231234 becomes 551231234. PROBLEM! I can't redial this number because my Cisco dial plan adds a 1 and the number becomes 1551231234.

What can I do? Is it possible to add a rule in Operator that will recognize the plus sign (+) and remove it?

Thanks! Oh and here is my dial plan if it will help.

(P30[23456789]11|1[2-9]xx[2-9]xxxxxx|<:1>[2-9] xx[2-9]xxxxxx|[x*].)

I received this from my SIP carrier:
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Please enable "e164" protocol if your phone system has that option.

e164 adds the "+" sign within the routing.

If your system does not have that protocol, then your system will need to be able to strip the "+" off in order to make a redial call.
---

Any thoughts? Still going to be the same problem when I call comes in without the plus sign and the "1" then I have no idea what the first digit is in the area code.

[Updated on: Thu, 03 October 2013 01:08]

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Vladimir Toncar (Kerio)

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Hi,

Are you really getting all these prefix combinations from the same SIP carrier? The usually send the calling numbers in a more or less normalized format.

If switching to E.164 means they will send the + sign always, you would at least know you always have to strip it.

The current rewriting in Operator lets you strip a fixed number of digits. We have ideas about what we call "advanced" routing that would let admins create complex call routing rules. No actual work has been done towards that so far, besides some schema drawing. It will be considered as one of the candidate features for version 2.3. We know it would be useful even though most of our current customers are happy with the existing 'simple' routing.

Vladimir
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nhoague

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Hi Vladimir,

Yes this is all from one SIP carrier. I have asked them already why so random or sporadic on the calling numbers; waiting to hear back on that.

So is this e.164 something that is adjustable?
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Vladimir Toncar (Kerio)

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E.164 is an ITU-T recommendation about the international numbering plan. When SIP telcos talk about "E.164" they usually mean that they signal the numbers with the leading "+", followed by the country code (like +1408... ). Hence you would know up front how many digits you need to remove in the the rewriting rule.

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