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New Member

VOIP Card on Cisco 2821

Hi,

I want to set up a VOIP environment in my company. The topology is like this:

PBX1-75xx-WAN-2821-PBX2-phone

PBX2 is a panasonic TD88 Model.

The dial plan will be (from phone-set):

1.dial 8 for PSTN access direct to PBX2

2.dial 9 for accessing branch office under PBX1.

I want to know which module/card shall I choose on cisco 2821 router?

Thanks

Joey

3 REPLIES
New Member

Re: VOIP Card on Cisco 2821

Joey,

It depends on what kind of interface you have on PBX2. Analog? E1? T1?

Ivan

New Member

Re: VOIP Card on Cisco 2821

Hi Ivan,

I know little about telephony. But I think the interface is analog. Because it seems using RJ-11 interface on PBX.

Actually,TD 88 get 8-port for connectiing to telecom company. Now we just used 4 of them. I want to use the other 4 interface for voip that may be connected the Cisco 2821.

Do you have any recommendation?

Thanks

Joey

New Member

Re: VOIP Card on Cisco 2821

Hi!

Do you have those 4 that are connected to telco connected to standard telephone lines (can you instead of pbx connect analog phone and make a call)?

If yes,then you will need a FXO interface on a router.

Ivan

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