[cisco-voip] DSP Calculation

[Ahmed Elnagar]

Every PRI add 24, 

provided that it is a T1 for E1 it will be 32 

 

 Best Regards;

  Ahmed Elnagar

  Senior Network PS Engineer

  Mob: +2019-0016211

  CCIE#24697 (Voice)

  

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Nick Matthews
Sent: Wednesday, September 15, 2010 2:36 PM
To: Bill
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] DSP Calculation

 

Some rules you can use for quick and dirty:

Every PRI add 24, every FXO/FXS add 1.

If you're using G729, double that number.

If you're using conferencing, add 16 per conferencing session.

If you're using transcoding, you have to know what percentage of your
calls are going to be transcoded.  1 for G711, 2 for G729 per each
session.

This will be a little bit above what you need since the actual ratio for
G729 is closer to 1.7-1.8.


For PVDM3, conferencing is eased up and you can add 1 channel per member
of the conference.  Ex: 2 8 party conferences is 16.

To get something more concrete, use the handy-dandy DSP calculator:
http://www.cisco.com/web/applicat/dsprecal/dsp_calc.html

-nick

On Tue, Sep 14, 2010 at 10:53 PM, Bill <bill at hitechconnection.net>
wrote:

If you need to bring up PSTN interfaces such as PRI, FXO or FXS. If you
need to do hardware based conferencing or if you need to transcode one
codec to the other. 

 

________________________________

From: cisco-voip-bounces at puck.nether.net [mailto:
cisco-voip-bounces at puck.nether.net] On Behalf Of Briann McDonald
Sent: Tuesday, September 14, 2010 2:42 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] DSP Calculation

 

All, 

 

What is a general rule to apply when determing DSP module needs. 

 

Thanks, 


_______________________________________________
cisco-voip mailing list
cisco-voip at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip

 

Disclaimer: NOTICE The information contained in this message is confidential and is intended for the addressee(s) only. If you have received this message in error or there are any problems please notify the originator immediately. The unauthorized use, disclosure, copying or alteration of this message is strictly forbidden. Raya will not be liable for direct, special, indirect or consequential damages arising from alteration of the contents of this message by a third party or as a result of any malicious code or virus being passed on. Views expressed in this communication are not necessarily those of Raya.If you have received this message in error, please notify the sender immediately by email, facsimile or telephone and return and/or destroy the original message. 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20100916/38d1c578/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 1801 bytes
Desc: image001.jpg
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20100916/38d1c578/attachment.jpg>