Help for basic VOIP function on 2821

[ayao]

Hi,

I'm new to VOIP. Sorry for this simple question.

We have two Cisco 2821 routers, two 7960G IP phones.

Each 2821 router has PVDM2-8 DSP module, HWIC-4ESW 4 port swtiching card, IOS 12.4(22)T3.

No any Call Manager software is loaded.

Can anyone point me to a sample configuration/how-to so I can make phone call from Router A to Router B?

Something as below:

Phone A  <---->  Router A  <----  internal IP network  ---->  Router B  <------>  Phone B

Please note we don't have Call Manager software and we don't need fancy phone call features.

Thank you very much!

-Andrew

[babatunde_sanda]

You need two analog phones.  The VOIP phones you have 7960G will not work.  They are dumm terminals.  They need something to tell them what to do.  A call agent (CUCM, CCM,) or any other call agent that can control cisco VOIP phones eg asterics.

When you do get 2 analog phones configure voip and pots dial peers

example

Configure this on both routers with the IP pointing to each other

dial-peer voice 10 voip
destination-pattern 5678 --No the analog will send to the other sides fxs port to ring the analog phone
session target ipv4:10.10.10.1 ------ ip address of the other router.

dial-peer voice 11 pots
destination-pattern 234 --- the number that will ring the phone plugged here.
port 1/0 -------fxs port where your analog phone is plugged.


Dial away.

You might find ths url helpful.

http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a00800e00d0.shtml

[ayao]

Hi Sanda,

Thank you very much for the quick response!

I'll read through the link you provided.

At the same time we're considering upgrade our firmware so it can support telephony-service.

Thanks again!

-Andrew