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New Member

WHICH DIAL PEERs DO I NEED IN ISR 2801?

Hello everybody!

I have a big trouble, I can NOT configure a ISR 2801 to make/receive calls beetwen a GSM cell Phone and my VoIP Campus Network.

This is the SH VER of my router:

R_VOICE_GSM#sh ver

Cisco IOS Software, 2801 Software (C2801-IPVOICE-M), Version 12.3(14)T6, RELEASE SOFTWARE (fc2)

Technical Support: <A HREF="javascript:newWin('http://www.cisco.com/techsupport')">http://www.cisco.com/techsupport</A>

Copyright (c) 1986-2006 by Cisco Systems, Inc.

Compiled Wed 04-Jan-06 21:38 by dchih

ROM: System Bootstrap, Version 12.3(8r)T8, RELEASE SOFTWARE (fc1)

ROM: Cisco IOS Software, 2801 Software (C2801-IPVOICE-M), Version 12.4(5), RELEASE SOFTWARE (fc3)

R_VOICE_GSM uptime is 3 hours, 18 minutes

System returned to ROM by power-on

System image file is "flash:c2801-ipvoice-mz.123-14.T6.bin"

Cisco 2801 (revision 5.0) with 116736K/14336K bytes of memory.

Processor board ID FTX0949D1UU

2 FastEthernet interfaces

4 Voice FXS interfaces

4 DSPs, 64 Voice resources

DRAM configuration is 64 bits wide with parity disabled.

191K bytes of NVRAM.

62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

As can You see, I am using a 4FXS/DIDI module to receive a GSM Gateway.

The GSM Gateway is an equipment thats look like a Cisco ATA. It has an antenna to communicate with the public GSM network and a RJ11 port to plug in to a analog phone. This GSM gateway has a SIM CARD slot so I can put in a valid SIM card and use a analog phone to make calls.

So there is my first question. Do I need a FXO or FXS Port ?? The GSM GW owner company said me it enough with FXS port... but I have not success!.

Maybe I had not configured dial peers as well as I think.

I am attaching a Picture where You can see my network configuration.

This are the conditions:

-I have a Ip telephony deployed in my campus.

-I am using a SUC/PUB Call Manager 3.3 (172.20.64.4 and 172.20.64.5)

-Call manager uses IRS 2801 (IP 172.20.64.9)as a H323 Gateway.It is recongnized by the CCM.

-the ISR 2801 has IP LAN 172.20.64.9, Def Gateway configured.

-Router pattern is configured in the CCM. If I want to call 9.97569442 I will use 172.20.64.9 as a Gateway.

For example:

I have to extensions Campus: 7461 and 7485. these Ip phones can communicate withiout problems.

-The GSM gateway has a SIM card with the cell number = 97569443.

the GSM gatway is attached in one port of the 4FXS/DID module.

-The GSM gateway works ok.

-4fxs/did is working too. (I have done tests.)

-

GOAL:

-Make a call to a Cell Phone with a number 97569442 from any campus extension (7461 or 7485). (remember GSM gateway is 97569443!)

-If I make a call form the cell phone to my internal campus extension it should be routed using the ISR 2801.

Which will be the INCOMING DIAL PEER?

Which will be the OUTGOING DIAL PEER?

DO I NEED SOMETHING ELSE?

Thanks in advance

Walter Munguia

SAN MARCOS UNIVERSITY

LIMA-PERU

CCNA

8 REPLIES
New Member

Re: WHICH DIAL PEERs DO I NEED IN ISR 2801?

All Ip phones register to the Call manager 3.3

The ISR 2801 is a brand new equipment.

This ISR 2801 will be a voice Gateway. But it will be the Gateway only if all IP Phones want to call the number 97569443 that is a mobile GSM phone.

To complete the communication beetwen ISR 2801 gateway and the GSM Public Network I have bought a GSM gateway that uses a GSM line with the number 97569442. this equipment has an antenna (to communicate with GSM Net) and a RJ11 to attach a Phone (to use a fix phone) .

So I want to use this RJ11 port to attach the ISR 2801.

Re: WHICH DIAL PEERs DO I NEED IN ISR 2801?

Hi Wmunguia,

this is a simple example of dial-peers that you can use:

dial-peer voice 74 voip

destination-pattern 74..

session target ipv4:172.20.64.4

incoming called-number 9756944.

dial-peer voice 75 pots

destination-pattern 9756944.

port 0/0/0

incoming called-number .

direct-inward-dial

Remember that "port 0/0/0" is the port that you attach the GSM GW and "destination-pattern 74.." if you receive from the GSM GW only the 4 last numbers.

Hope that can help you.

Silver

Re: WHICH DIAL PEERs DO I NEED IN ISR 2801?

Reading your description about the GSM gateway, I think you would need a FXO port on the Cisco 2801. I am thinking this because the GSM gateway allows you to connect an analog phone and hence the GSM gateway port acts as a FXS port. So you would need to use a FXO port on the Cisco 2801 to connect to the GSM gateway.

If it turns out that you would need to use FXO port on the Cisco 2801, then you can meet your first goal - make a call to a cell phone, but not the second.

For the second goal, since FXO ports do not provide DID feature, you would have to use an autoattendant or an operator to route calls to internal extensions.

HTH

Anup

Silver

Re: WHICH DIAL PEERs DO I NEED IN ISR 2801?

Reading your description about the GSM gateway, I think you would need a FXO port on the Cisco 2801. I am thinking this because the GSM gateway allows you to connect an analog phone and hence the GSM gateway port acts as a FXS port. So you would need to use a FXO port on the Cisco 2801 to connect to the GSM gateway.

If it turns out that you would need to use FXO port on the Cisco 2801, then you can meet your first goal - make a call to a cell phone, but not the second.

For the second goal, since FXO ports do not provide DID feature, you would have to use an autoattendant or an operator to route calls to internal extensions.

HTH

Anup

New Member

Re: WHICH DIAL PEERs DO I NEED IN ISR 2801?

Anup

"...the FXS is equivalent to a PBX port, the FXO is equivalentto a phone..."

This GSM gateway has a Port (RJ11) that provides voltage and ringing. That is the reason why a normal analog phone works when it is plugged in the GSM Gateway.

So the GSM gateway's port should be working as a FXS port!

Glup glup!

The FXS port in the ISR router wont work, I need to use a FXO port...

New Member

Re: WHICH DIAL PEERs DO I NEED IN ISR 2801?

Anup,

I have bought a FXO VIC module...

thanks for your point of view.

Mmorais,

I am gonna try with your command lines.

I will post results....

New Member

Re: WHICH DIAL PEERs DO I NEED IN ISR 2801?

DEAR FRIENDS:

I can not make calls beetwen my campus IP phones and external phones yet.

I have simplified connections in the network and I am attaching a picture of the network.

Important Data:

97569442 is the phone number I want to call

97569443 is the phone number PSTN sends to the Router.

7485 is the internal Ip Phone extension.

172.20.64.4 is the Call Manager IP

172.20.64.9 is th ISR 2801 H323 IP

I understand that PSTN send me: TONE AND GIVES ME A TELEPHONE NUMBER (97569443).

Now I Have the FXO VIC installed in the 2801 Router, so The router now can receive tone.

In the Call manager I added a Route Pattern saying:

If I want to call to 97569442 I will use the 172.20.64.9 Gateway which is the ISR 2801 Router and it is a H323 GW one.

Do I have to add a Route Pattern for 97569443 ?

Which Dial peer POTs/VoIP do I need?

Hoping help.

Silver

Re: WHICH DIAL PEERs DO I NEED IN ISR 2801?

Outgoing Calls to 97569442

1. In the Callmanager Route pattern, select the Discard Digits to Pre Dot under Called Party Transformations.

2. In the 2801 gateway, add the following

dial-peer voice 10 pots

destination-pattern .T

port 1/0/0 (the FXO port)

Incoming calls to 97569443

1. In the 2801 gateway

voice-port 1/0/0 (FXO port)

connection-plar 7485

dial-peer voice 20 voip

destination-pattern 7485

session-target ipv4:172.20.64.4

2. Make sure the Calling search space in the gateway configuration is correct.

Regards,

Anup

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