DSP:s needed Router with one E1 and 2FXS

[Fredrik Hansson]

Hello,

An existing customer has a 2911 Router with one E1 PRI ISDN connected (CSS). (VWIC3-1MFT-T1/E1)

The customer has a PVDM3-32 as far as hardware DSP recources goes.

The customer wants to add an additional card supporting 2FXS interfaces (VIC3-2FXS/DID)

Do the customer also need an additional DSP card for that?

Regards,

Fredrik

[paolo bevilacqua]

Depends on how many E1 channels are used, and what other features are needed. Check:

http://www.cisco.com/web/applicat/dsprecal/dsp_calc.html

[Fredrik Hansson]

The router only serves as an MGCP configured ISDN-Gateway.

Only G711 codec is in use.

I tried out your link and it seems to work, i would want an confirmation on my input:

I inputed the Router Model 2911

Slot0: VWIC3-1MFT-T1/E1 (E1)

Slot1: VIC3-2FXS/DID.

The webpage prefilles voice channel values.

I fill in the same number of channels as "low Complexity". (30 + 2)

(Only G711 codec used).

No additional services.

If everything is correct that means that the current PVDM32 is enough.

-------------

output

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Router: 2911 IOS: 15.1(3)T DSP Modules Required: PVDM3-32: 1 DSP Module Allocation: Router Slot 0: 32 Voice (100%) 0 Available (0%) PVDM Slot 0/0: PVDM3-32 Call Volume Allocation: Router Slot 0 Low Med High Slot 0/0: VWIC3-1MFT-T1/E1(E1) 30 Slot 0/1: VIC3-2FXS/DID 2

[paolo bevilacqua · Accepted solution]

That is correct.

Thank you for the nice rating and good luck!