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New Member

H323 PRI Connection Plar for DID's

How do I configure my connection plar destination for a block of DID's. Is there wild cards or am I doing something wrong.

I have a Voice gateway with 1 pri. Running h323 with 2 CallMangers.

oice-port 0/0/0:23

connection plar 231843****

description PRI Voice Port

!

!

!

!

!

dial-peer voice 231 voip

description Incoming Called Numbers from PRI

destination-pattern 231843....

session target ipv4:172.16.0.10

dtmf-relay h245-alphanumeric

codec g711ulaw

Can someone help me with this one?

7 REPLIES
New Member

Re: H323 PRI Connection Plar for DID's

From what I can tell, it looks like you're trying to treat the PRI like it's a CAS with E&M signaling or something.

I would have the following:

dial-peer voice 1 pots

incoming called-number 231843....

destination-pattern 9T ! if you want to use for outbound calls.

digit-strip ! to remove the 231843 from your dialed number

dial-peer voice 100 voip

description inbound to CallMan

destination-pattern .... ! four digits left from the pots dial peer

session target ipv4:172.16.0.10

forward-digits all

codec g711ulaw

I think this should point you in the direction you want to be going, if someone else has a more elegant solution I'd be interested in hearing that one as well though!

Thanks,

Steve

New Member

Re: H323 PRI Connection Plar for DID's

What if the DID doesn't match the internal extension. Would I then have to introduce translations?

Another question, Do I even need the connection plar under the PRI voice port?

I have 2 call legs

1 pots from PSTN to router

1 VOIP from router to Callmanager

right?

New Member

Re: H323 PRI Connection Plar for DID's

That's right. If the dialed string doesn't match anything and you want it go end up at an endpoint you're either going to have to translate digits or setup a CTI route point for the pattern. You do not need the connection PLAR under the PRI voice port if you follow the dial-peer setup that I used below. I have never used PLAR on a PRI.

You will have two dial peers: The POTS dial peer which is going to handle the call coming in from the telco, and then your VoIP dial peer which is going to take the digits that the router has received and send them to the next hop, which is your call manager. Your call manager will then check the pattern it receives and route to the appropriate end point (an extension, FXS port, Analog port, another router, etc.)

ALSO - IMPORTANT - I totally forgot the command direct-inward-dial that needs to be on your POTS dial peer, this is what allows the next dial-peer in line to be matched by the inbound call.

HTH,

Steve

New Member

Re: H323 PRI Connection Plar for DID's

BTW - This is a great article if you're interested in gaining more information about the way dial peers work in the inbound and outbound direction.

http://www.cisco.com/en/US/partner/tech/tk652/tk90/technologies_tech_note09186a008010fed1.shtml#topic1

New Member

Re: H323 PRI Connection Plar for DID's

Thanks for the information. I have always used MGCP for a PRI but since the new Mobility feature of CM6 require H323 gateway with a PRI I am learning now. The connection Plar was throughing me off.

So in theory..

Could I use a pots dial peer with the incoming called number . command?

and then my voip dial peer with destination pattern command to call manager?

Re: H323 PRI Connection Plar for DID's

TODD

u need in ur case a pots dial-peer take the call coming from pstn

then a voip dial-peer send the call to the CM

about the the DID

u said u need some sort of translation to get it match with ur internal numbers

u can do the translation on the H323 gateway

or u send the number as it is to the callmanager and on call manager make a translation pattren to change it

this is for the incoming calls and called number translation

for outgoing calls and calling number the same concepts can be used in opesit way

good luck

if helpful Rate

New Member

Re: H323 PRI Connection Plar for DID's

OK,

Here is what I have:

Will this work. Goal to send any incoming number from the PSTN that starts with 231843.... and send it to call manager. Then send any call from call manager to PSTN.

voice-port 0/0/0:23

description PRI Voice Port

!

!

!

!

!

dial-peer voice 2311 voip

description Incoming Primary to CCM1

destination-pattern 231843....

voice-class h323 10

session target ipv4:172.16.0.10

dtmf-relay h245-alphanumeric

codec g711ulaw

!

dial-peer voice 2312 voip

description Incoming Backup to CCM2

preference 1

destination-pattern 231843....

voice-class h323 10

session target ipv4:172.16.0.11

dtmf-relay h245-alphanumeric

codec g711ulaw

!

dial-peer voice 2310 pots

description Incoming From PSTN

incoming called-number 231843....

direct-inward-dial

!

dial-peer voice 2313 pots

description Outgoing to PSTN

destination-pattern 9T

port 0/0/0:23

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