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Cisco 3845 with NM-HDV2-1T1/E1

Hi Team,

We have received a Cisco3845 that has the below configuration:-

HWIC Slot 0 VIC2-4FXO

HWIC Slot 1 VIC2-4FXO

HWIC Slot 2 VIC2-4FXO

HWIC Slot 3 VIC2-4FXO

NM Slot 1 NM-HDV2-1T1/E1 One Onboard E1

There is only one PVDM2-64 on board the Cisco 3845 MB and there are no DSPs on the NM-HDV2-1T1/E1.

Is there any way that I can use the onboard DSP (PVDM2-64) and allocate 30 Channels for the NM-HDV2-1T1/E1.

When I try to configure the pri-group timeslots 1-31 on the E1 Controller 1/0 I get a message that there are No DSP Resouces to create the Voice Port.

I believe NM-HDV2-1T1/E1 should have its own DSP Resources, but would like to clarify from the experts here on the forum.

Regards,

Sriharshaa Prabhakar

Senior Network Engineer

Network Services Division

Emirates Computers

P.O.Box 7222, Abu Dhabi, U.A.E.

Phone: +971 2 673 2500

Mobile: +971 50 521 29 56

E-mail: sriharshaa.p@ecead.ae

Web: www.emiratescomputers.ae

2 ACCEPTED SOLUTIONS

Accepted Solutions
Hall of Fame Super Gold

Re: Cisco 3845 with NM-HDV2-1T1/E1

Yes, it needs it's own resources, and cannot use the DSP on the board. Perhaps you can trade the pvdm2-64 for 2 x pvdm2-32, that's what you would need if using 'light' codecs only.

hope this helps, please rate post if it does!

Cisco Employee

Re: Cisco 3845 with NM-HDV2-1T1/E1

Do the following -

voice card 0

dspfarm <--- add this command

voice card

dspfarm <--- add this command

These will enable DSP resource sharing between the motherboard DSP's and the voice card in the NM slot.

You then need to enable correct clocking synchronisation between the NM-HDV2 and the router TDM backplane by adding these commands -

network-clock-participate slot

network-clock-select 1 e1

6 REPLIES
Hall of Fame Super Gold

Re: Cisco 3845 with NM-HDV2-1T1/E1

Yes, it needs it's own resources, and cannot use the DSP on the board. Perhaps you can trade the pvdm2-64 for 2 x pvdm2-32, that's what you would need if using 'light' codecs only.

hope this helps, please rate post if it does!

Re: Cisco 3845 with NM-HDV2-1T1/E1

Hi Paolo,

Thanks a lot buddy, I have rated the post...

Regards,

Sriharshaa Prabhakar

Senior Network Engineer

Network Services Division

Emirates Computers

P.O.Box 7222, Abu Dhabi, U.A.E.

Phone: +971 2 673 2500

Mobile: +971 50 521 29 56

E-mail: sriharshaa.p@ecead.ae

Web: www.emiratescomputers.ae

Cisco Employee

Re: Cisco 3845 with NM-HDV2-1T1/E1

Do the following -

voice card 0

dspfarm <--- add this command

voice card

dspfarm <--- add this command

These will enable DSP resource sharing between the motherboard DSP's and the voice card in the NM slot.

You then need to enable correct clocking synchronisation between the NM-HDV2 and the router TDM backplane by adding these commands -

network-clock-participate slot

network-clock-select 1 e1

Re: Cisco 3845 with NM-HDV2-1T1/E1

Hi Cameron,

Thanks, this has helped me to resolve the issue,

Regards,

Sriharshaa Prabhakar

Hall of Fame Super Gold

Re: Cisco 3845 with NM-HDV2-1T1/E1

I didn't know DSP farm was possible for this configuration; the fact that you are confirming it works it's even better.

I apologize for the confusion I made indicating the opposite.

Re: Cisco 3845 with NM-HDV2-1T1/E1

Hi Paolo,

No problem man, I am happy that we learnt something new from Cameron.

Regards,

Sriharshaa Prabhakar

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