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Frequent Contributor

Transcoding 2901

Hi,

I have a 2901 with 1 x PVDM3-32 and 1x PVDM3-64

The only interface card that uses the DSP's is a VWIC2-2MFT-T1/E1

I want to add a transcoder using the LTE interface, I think I should have enough DSP's, but max sessions says <0-0>

As far as I can see the PVDM3-32 should be free for transcoding services

 

Any idea why I have no transcoding sessions?

 

JH

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7 REPLIES 7
Hall of Fame Master

Re: Transcoding 2901

Can you post "show run" and "show diag"?

Frequent Contributor

Re: Transcoding 2901

Hello Chris

 

Attached the config, I have removed some config like dial-peers and sip-ua config

 

Jan

Hall of Fame Master

Re: Transcoding 2901

Since you have 2 E1-PRIs the 64+32 channel PVDMs with flex complexity all may be allocated to your PRIs, I suggest you read the following great write up on DSP credits to confirm if that is the case:

 

https://community.cisco.com/t5/collaboration-voice-and-video/understanding-the-output-of-quot-show-voice-dsp-group-all-quot/ta-p/3141792

 

 

VIP Advisor

Re: Transcoding 2901

As an additional resource, this excellent explanation from Vik: https://youtu.be/vlm3wqurlqs

Anthony Holloway

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Hall of Fame Master

Re: Transcoding 2901

Very good video, thanks for posting Anthony.

Highlighted
Frequent Contributor

Re: Transcoding 2901

I did an IOS upgrade and suddenly I have max sessions 23.

The IOS was quite old for this 2901

I saw that the DSPWARE VERSION went from 20 something to 46.2.12

 

Thank you all for the advice and links

Hall of Fame Master

Re: Transcoding 2901

very good, thinking about it the single PVDM3-64 should have covered your 2 E1s, so this makes sense now.

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