VoIP Routing. Need help

[grinch182]

hello there. Looking for advice to solve voip routing problem. I have 3 locations:
HQ office (A) and two branch offices (B and C). Each office has its own call pattern. A... for HQ B... and C... for branch officies respectively.

I dont know how to route calls from office B to A via voice-port 0/0/0:15 and from C to A via voice-port 0/0/1:15.

there is my POTS dial-peer configuration. for now I use only one voice-port for all incoming calls.

dial-peer voice 1000 pots
destination-pattern 1...
no digit-strip
direct-inward-dial
port 0/0/0:15
forward-digits all

I've attached scheme for better understanding.

Sincerely,
GRInch

[vasank]

what kind of link do you have in between gateways A & B and A&C..do u have call manager in this scenario?

[grinch182]

It's E1 links between routers. no CM, digital PBX connected to PRI ports on routers.

[nitsinha]

Hi GRInch,

At site B router, you can configure the following to route calls to site A:-

dial-peer voice 2 pots

  incoming called-number .

  direct-inward-dial

  destination-pattern 1...

  no-digit-strip

  port 0/0/0:15

This would serve the purpose of both inbound and outbound dial-peers when calls are made from site B to site A.

Try this and post the results. Do the same for site C to site A calls on site C router.

HTH

regards

Nitesh

PS:Pl rate helpful posts

[grinch182]

Hello, Nitesh.

As I understand dial-peer vocie pots needed to route incoming calls to PBX. I think I need addtional configuration on site A to route incoming calls. Or on sites B and C but with dial-peer voice voip. Correct me if I'm wrong.

Sincerely,

GRinch

[nitsinha]

I thought you said that you had an E1 link between the gateways as well and not an IP link. dial-peer voice voip is used for routing calls over IP network.

On  both gateways A & B, you will need an inbound and outbound dial-peers. Do you have something like these in place on gateway A?

dial-peer voice 1 pots

  incoming called-number .

  direct-inward-dial

  destination-pattern 1...

  no-digit-strip

  port 0/0/0:15

Can you see the calls hitting gateway B and gateway A in debug isdn q931 when calls are made from B to A?

regards

Nitesh

PS:Pl rate helpful posts

[grinch182]

@Nitesh,

It's E1 link, but IP inside it, sorry for disinformation. Voice works perfectly the only problem is incoming calls from branch offices to HQ. I need separate calls from B and C sites to billing them correctly on my PBX. 

Cheers, GRinch

P.S. I'll rate helpful posts

[nitsinha]

If its an IP link, then on gateway B & C you should have a session target ipv4 command under the voip dial-peer poiting to gateway A's IP address. Hoping this to be configured, try checking whether the call hits the gateway A in debug voip ccapi inout. What do you hear when the call is made from B to A? What do you mean by "need separate calls from B and C sites"?

Nitesh

[grinch182]

@Nitesh

Please read my first post attentively and look at attached file. I have two links between PBX and router on site A. I want route calls from site B via voice-port 0/0/0:15 and calls from site C via voice-port 0/0/1:15. For now all incoming calls goes through one voice-port.

Thanks,

GRinch

[nitsinha]

I guess the posts were not clear. Anyway i think you can try the following:-

Select an inbound dial-peer based on the calling number(from site B or C). Use answer address command in the voip dial peer. Now use translation profiles to change the called number based on whether the call is coming in from site B or C e.g. you can prefix another digit say 2 for calls from site B and 3 for those from site C. Then select the appropriate outbound pots dial-peer(destination-pattern 22... or 33...) consume the extra prefix digit(2 or 3) by forward digits 4 command and route the calls according to your need.

Try this and post the output here.

Hope this helps.

Nitesh

[grinch182]

@Nitesh

This is a good advice. The only problem I need transit all incoming digits to PBX and addition digit shouldn't be there. Can I strip it on side A?

[nitsinha]

Hi,

Try the following on gateway A

voice translation-rule 1
  rule 1 /1.../ /2\0/

voice translation-rule 2

rule 2 /1.../ /3\0/

voice translation-profile test1
  translate called 1

voice translation-profile test2
  translate called 2

dial-peer voice 20 voip
translation-profile incoming test1
answer-address 2...

dial-peer voice 21 voip
  translation-profile incoming test2
  answer-address 3...

dial-peer voice 22 pots
  destination-pattern 21...
  port 0/0/0:23
  forward-digits 4
 
  dial-peer voice 23 pots
  destination-pattern 31...
  port 0/0/1:23
  forward-digits 4

This will send all the 4 digits of the called no. to the PBX.

Hope that helps.

Nitesh

[grinch182]

@Nitesh.

Thanks for advise I'll try config you provide.

[Senthil Kumar Sankar]

Hi

According to the attached file, Connection between the Router A,B,C you have IP Connectivity,  and PBX to routers E1 connectivity

So you should be having a Incoming VOIP Dial-peer in the A router

dial-peer voice 20 voip

  incoming called-number B...

  session target ipv4:X.X.X.X (Ip address of B)

dial-peer voice 30 voip

   incoming called-number C...
    session target ipv4:X.X.X.X (Ip address of C)

[dijohn]

Here you go

Site A

dial-peer voice 1000 pots
destination-pattern 1...
no digit-strip
direct-inward-dial

incoming called-number .T
port 0/0/0:15
forward-digits all

dial-peer voice 2000 voip

destination-pattern 2...

session-target ipv4:

incoming called-number 1...

Site B

dial-peer voice 2000 pots
destination-pattern 2...
no digit-strip
direct-inward-dial

incoming called-number .T
port 0/0/0:15
forward-digits all

dial-peer voice 1000 voip

destination-pattern 1...

session-target ipv4:

incoming called-number 2...

Repeat the same for Site C

HTH

PS: rate useful posts