asterisk users - Feb 2006 - Traffic prioritization and 'class of service' for SIP

We're got a T1 from Sprint that we use for internet.  During VIOP calls, 
if you download something, the VOIP calls break up.

I found some info at Sprint for adding 'class of service', and I also 
have some information on configuring our Cisco routers.

I've read the relevent pages on the wiki, but it seems vauge what's 
required and what's required by the NSP (Sprint).

How have you dealt with this problem?  Is this something which requires 
the NSP to be involved, or can this all be done on the premises side in 
IOS configuration(s)?


Phil

Hi 

Best Regards

=============================David Choo
Sales Engineer
Citrix Certified Administrator
Polycom Qualified Tech & Sales Rep
Espore Corp Pte Ltd
68 Kallang Pudding Rd
#04-03 SYH Logistics Bldg
Singapore 349327
Tel: 65-6842 2725, Ext - 404
DID: 65-9006 2645
Fax : 65-6842 2724
E-mail :DavidChoo@Espore.com
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Philip Edelbrock <phil@netroedge.com> 
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[Asterisk-Users] Traffic prioritization and 'class of service' for SIP







We're got a T1 from Sprint that we use for internet.  During VIOP calls, 
if you download something, the VOIP calls break up.

I found some info at Sprint for adding 'class of service', and I also 
have some information on configuring our Cisco routers.

I've read the relevent pages on the wiki, but it seems vauge what's 
required and what's required by the NSP (Sprint).

How have you dealt with this problem?  Is this something which requires 
the NSP to be involved, or can this all be done on the premises side in 
IOS configuration(s)?


Phil
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David Choo wrote:
> 
> Hi,
> 
> Consider doing rate limiting / bandwidth reservation. It worked heaps of 
> wonders for mine!
> 
That's good to hear.  BTW- Am I doing this right?  Here are the relevent 
chunks of my config on my router:

!
!
class-map Platinum
   match access-group 101
!
!
policy-map IPCOS
   class Platinum
    bandwidth percent 35
!
access-list 101 permit udp any any range 16384 32768
access-list 101 permit udp any any range 6050 6060
!
interface Serial0/0
  service-policy output IPCOS
  service-module t1 timeslots 1-24
!



Phil