Cisco Systems Cisco 2811 and SIP, what do I need?
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Subject Author Date
Cisco 2811 and SIP, what do I need? Peter Danes 04-27-09
Posted by Peter Danes on April 27, 2009, 10:08 am
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Hi,

I currently have a 2811 which is just used for data at the moment. I'm
looking at signing up for a VoIP SIP service and configuring it on my
2811. This is new territory for me so to get me started, can someone
advise what NM/WIC/HWIC I will need as a bare minimum?

Thanks

Peter

Posted by Doug McIntyre on April 27, 2009, 11:41 am
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>I currently have a 2811 which is just used for data at the moment. I'm
>looking at signing up for a VoIP SIP service and configuring it on my
>2811. This is new territory for me so to get me started, can someone
>advise what NM/WIC/HWIC I will need as a bare minimum?

We'll just turn this around and ask what you want to do with it?

VOIP means an increadibly large number of different things to
different people, what you want to acomplish greatly affects what
hardware you get. Especially when Cisco routers are more like
toolboxes rather than a dedicated single-use tool.

If you are passing SIP packets from something inside your network to
outside your network, you probably don't need anything on the router.
Ie. you get a VOIP phone of some kind, it just sits there on your network.

It doesn't sound like you need to turn an FXO into SIP, or feed an FXO
into CME making the router a gateway of some kind?

Its possible that you want to setup CCME to make a PBX type system
with your 2811?

Finally, you may want to terminate the SIP trunk you've obtained to be
terminated on a FXS so you can plug an analog phone into the router
and have it ring when the SIP trunk receives a call?

Posted by Elia Spadoni on May 4, 2009, 6:38 am
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> Finally, you may want to terminate the SIP trunk you've obtained to be
> terminated on a FXS so you can plug an analog phone into the router
> and have it ring when the SIP trunk receives a call?

That could interest me :)

I have one 2600 router and IOS 12.4

can you help me starting that thing?

Thank you

I have one SIP account with a SIP Provider
I would like to terminate it on an analog PBX to use with standard analog
phones.

I think I'd need one wic with a voice RJ11 port..



Posted by Doug McIntyre on May 5, 2009, 3:42 pm
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>> Finally, you may want to terminate the SIP trunk you've obtained to be
>> terminated on a FXS so you can plug an analog phone into the router
>> and have it ring when the SIP trunk receives a call?

>That could interest me :)
>I have one 2600 router and IOS 12.4

Is it a 2600XM? Or a 2600? Alot of voice stuff requires a ton of
memory to run the latest images, that a plain 2600 couldn't have.
The latest voice stuff adds things like SIP registration with
usernames instead of only E.164, so its pretty desireable, seeing as
almost all SIP providers do it via username.

The most basic setup would be adding on hardware DSPs like the NM-1V
or NM-2V, and popping a VIC card into their slot, in your case a VIC-2FXS,
such that you could plug an analog phone into the card.


>I have one SIP account with a SIP Provider
>I would like to terminate it on an analog PBX to use with standard analog
>phones.
>I think I'd need one wic with a voice RJ11 port..

That sounds like you need an FXS port. The opposit of that is the FXO
port/card.

Posted by Elia on May 25, 2009, 3:39 am
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Hello

I have both 2600 and 2600XM

in detail, talking about XM versions, I have :

C2611XM
C2621XM 48F/256D
C2651XM 48F/256D

It could be interesting that I set on the router the SIP user/pass
and I can use some VOIP Phones on the lan and an analog phone directly
connected via the router.

In the first case I'd need that the phones authenticate on the router
directly?? (maybe) and in the latter case I need a voice port with RJ11
plug.

Right?


>>> Finally, you may want to terminate the SIP trunk you've obtained to be
>>> terminated on a FXS so you can plug an analog phone into the router
>>> and have it ring when the SIP trunk receives a call?
>
>>That could interest me :)
>>I have one 2600 router and IOS 12.4
>
> Is it a 2600XM? Or a 2600? Alot of voice stuff requires a ton of
> memory to run the latest images, that a plain 2600 couldn't have.
> The latest voice stuff adds things like SIP registration with
> usernames instead of only E.164, so its pretty desireable, seeing as
> almost all SIP providers do it via username.
>
> The most basic setup would be adding on hardware DSPs like the NM-1V
> or NM-2V, and popping a VIC card into their slot, in your case a VIC-2FXS,
> such that you could plug an analog phone into the card.
>
>
>>I have one SIP account with a SIP Provider
>>I would like to terminate it on an analog PBX to use with standard analog
>>phones.
>>I think I'd need one wic with a voice RJ11 port..
>
> That sounds like you need an FXS port. The opposit of that is the FXO
> port/card.


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