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Community Member

Inbound PSTN Translation

First, let me say I grew up on the IP side of this house. I'm not bad with the voice stuff, but I'm no expert. I'm hoping what I'm doing wrong is elementary and I'm just failing to see it. So, here goes nothing.

I have a 3845 router with a WIC-1MFT. It's currently connected to a Tberd 224 Test unit. In normal operation, I can send a recieve calls from my IP Phone through a CME Router. On the Tberd my techie says he can see me seize the channel, and a concurrent call allows the next trunk to be seized. Everything looks great. Except translation.

I've been tasked with configuring this router to deliver US Dilatone from a PBX system up here in the States to some posts down in South America. This will not be accomplished through a Call Manager. Just h323 VoIP. Analog to Analog from end to end.

This particular PBX system doesn't pass me PSTN numbers, just the last 4 digits of their extensions. I'm trying to translate these four digits directly into OPX numbers that make sense to my Dial plans. Below is a copy of the pertinent config.

!!!!!

I have tried applying the translation to the voice-port, the ds0-group, and the controller (seen below) itself. The only thing I haven?t tried is applying it to outbound VoIP dial-peers. Mostly because it doesn?t make sense to me and seems like a lot more work.

!!!!!

!

voice service pots

translate incoming controller T1 1/0/0 called 1

!

voice translation-rule 1

rule 1 /^9386/ /1090/

rule 2 /^9387/ /1092/

rule 3 /^9388/ /1091/

rule 4 /^9449/ /1110/

rule 5 /^9450/ /1111/

rule 6 /^9429/ /1120/

rule 7 /^9430/ /1121/

rule 8 /^9443/ /1140/

rule 9 /^9444/ /1141/

rule 10 /^9445/ /1130/

rule 11 /^9446/ /1131/

rule 12 /^6666/ /0002/

!

controller T1 1/0/0

framing esf

linecode b8zs

cablelength short 133

ds0-group 0 timeslots 1-24 type e&m-immediate-start

!

voice-port 1/0/0:0

!

!

dial-peer voice 160 voip

description Belize Extensions

destination-pattern 109.

session target ipv4:XXXX

codec g711ulaw

!

dial-peer voice 170 voip

description Tres Esquinas Extensions

destination-pattern 110.

session target ipv4:XXXX

codec g711ulaw

!

dial-peer voice 180 voip

description La Randia Extensions

destination-pattern 111.

session target ipv4:XXXX

codec g711ulaw

!

dial-peer voice 190 voip

description Andros Island Extensions

destination-pattern 112.

session target ipv4:XXXX

codec g711ulaw

!

dial-peer voice 200 voip

description Great Exuma Extensions

destination-pattern 113.

session target ipv4:XXXX

codec g711ulaw

!

dial-peer voice 210 voip

description Great Inagua Extensions

destination-pattern 114.

session target ipv4:XXXX

codec g711ulaw

!

dial-peer voice 100 pots

description IVG Dialtone

destination-pattern 8T

port 1/0/0:0

!

dial-peer voice 220 voip

description Belvoir

destination-pattern 00..

session target ipv4:XXXX

codec g711ulaw

!

The extension to the Test IP Phone on my desk is 0002. I can send and receive calls coming in from the Test Unit and going out to it via my T1 trunk. This works beautifully as long as we?re using a number specified in a dial-peer.

The problem is, when testing a translation, say /^6666/ to /0002/ and my test guy on the Tberd side punches in 6666 numbers, the 3845 gives him a busy immediately after the first 6 is pressed. The debug reports a partial translation match, but it looks like it?s only using the first 6 in the stream.

Has anyone ever used a Tberd unit for Voice call testing? Is it not going to work by having a user seize a channel directly from the T1 trunk and try to pass digits by handset? These are things that I don?t know yet. And I don?t want to plug this router in to their PBX and have things working all kinds of strange.

Please help!

3 REPLIES
Community Member

Re: Inbound PSTN Translation

Hi,

try to apply your traslation under the voice-port 1/0/0:0.

Here is an example of configuration that wotk out:

voice translation-rule 1

rule 1 /^\(34[036789]\)\(\)/ /0\1\2/

rule 2 /^\(33[03456789]\)\(\)/ /0\1\2/

rule 3 /^\(36[0368]\)\(\)/ /0\1\2/

rule 4 /^\(32[0389]\)\(\)/ /0\1\2/

rule 5 /^\(39[0-3]\)\(\)/ /0\1\2/

rule 6 /\(^[1-9]\)\(\)/ /00\1\2/

voice translation-profile IN-PSTN

translate called 1

voice-port 0/0/0:15

translation-profile incoming IN-PSTN

(i'am in europe and we use E1)

Let me now if you fix your problem

Community Member

Re: Inbound PSTN Translation

Alessandro,

It doesn't work. If you notice, I don't have any dial-peers that match the inbound number. I think my router is refusing to translate because it doesn't possibly match any dial-peer as soon as the first number is pressed. That's why I'm getting busy signals immediately.

Your translations aren't replacing the entire stream of digits with another.

Community Member

Re: Inbound PSTN Translation

You are correct but the router should match the dialpeer after doing translation!

And you have a destination pattern 00..

try to place a call and launch the debug dial peer voice all,this could help to understand what is happening!

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