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Cisco 3825 how to convert for voice?

scatman
Beginner
Beginner

Hi I have a Cisco 3825 that is surplus to requirement and I need to convert it for voice for a new office.

It will need to connect to an ISDN30 so I believe I will need a vwic2 1mft E1/T1 controller module.

Where do DSP's come into it? Are they H/W or S/W, are they part of the E1 controller card or is it something else I need?

Any help greatly appreciated!

1 Accepted Solution

Accepted Solutions

acampbell
Advocate
Advocate

Hi,

You will need vwic2 1mft E1/T1

That will allow the physical connection of an ISDN30 PRI (E1 =30 channels , T1 24 Channels)

You also require a DSP chip to converts the POTS or PRI to IP packets

For E1/T1 you need

PVDM2-32 to enable all channnels

This plugs in to the PVDM slot on the motherboard of the router ( Yes Lid off)

HTH

Alex

Regards, Alex. Please rate useful posts.

View solution in original post

2 Replies 2

acampbell
Advocate
Advocate

Hi,

You will need vwic2 1mft E1/T1

That will allow the physical connection of an ISDN30 PRI (E1 =30 channels , T1 24 Channels)

You also require a DSP chip to converts the POTS or PRI to IP packets

For E1/T1 you need

PVDM2-32 to enable all channnels

This plugs in to the PVDM slot on the motherboard of the router ( Yes Lid off)

HTH

Alex

Regards, Alex. Please rate useful posts.

Hi Alex

Great, thanks very much for your help

Simon

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