[cisco-voip] QoS for VOIP.

[Karim]

Thanks Rich but I am not using CM. For my setup, I am using SIP server to act as software PBX. Investigating the s/w functions, I found that there is some sort of grouping that can be done from the server side for which you can limit the number of calls. So I add the extensions of each site in a separate group and do CAC ;-)



Karim.


  ----- Original Message ----- 
  From: Rich Dobry 
  To: cisco-voip at puck.nether.net ; cisco-nsp at puck.nether.net 
  Sent: Monday, June 20, 2005 5:15 PM
  Subject: RE: [cisco-voip] QoS for VOIP.


  Karim,

   

  I don't know your setup, but if you are using the Call Manager, CAC is setup in the CM.  You give it locations for each device and the bandwidth between locations reserved for phone calls.

  Depending on your coded per call, it will deduct the BW (25k for g.729 and 80k for G.711 - as far as I know, even if you are using cRTP, which will lower the actual BW, it still decrements the 25/80k) and once it is out of available BW, the call gets rejected.

   

  Rich

   

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                          Rich Dobry
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------------------------------------------------------------------------------

  From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Karim
  Sent: Sunday, June 19, 2005 1:35 PM
  To: cisco-voip at puck.nether.net; cisco-nsp at puck.nether.net
  Subject: [cisco-voip] QoS for VOIP.

   

  Hello, 

   

  I am trying to do QoS for VOIP traffic. Successfully configured LLQ, LFI and cRTP with MLPPP over virtual-template.

   

  What I am trying to do now is limiting the number of calls according to the bandwidth reserved for voice traffic. Can anyone help???

   

  With the current situation, if the reserved bandwidth can give 4 calls with good quality (taking into consideration that the rest of the bandwidth is consumed for other types of traffic), the 5th call can be started but with very bad quality. I am asking how can I avoid this 5th call from the begining??? I didn't find CAC config. with LLQ.

   

   

   

  Karim. 

   

   

   

   



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