We have a network of 3 sites all running 2 Cisco 877 (12.4(9)T4) routers with a broadband line connected to each.
We are using Splicecom Maximiser phone systems on each site and I would like to setup qos to fix problems with quality when the network is busy.
By poking around on the internet I have found some info and tried to get it working using the following -
class-map match-all ef
match ip dscp cs5
Unfortunatly this doesnt seem to be working. Any cisco experts out there?
Info from the Splicecom manual -
Quality of Service (QoS)
DiffServ provides the primary QoS mechanism for maximiser based systems to preserve
voice quality in converged IP networks. maximiser marks the voice IP datagrams it generates
so that routers and switches can give these packets priority over data datagrams. This is
important when using slower or congested links to avoid voice degradation when data is very
active. This is achieved by;
" Setting the SERVICE TYPE of every voice IP datagram to the value of 0xA0
" When using the DIFFERENTIATED SERVICES interpretation of the SERVICE
TYPE, the CODEPOINT (DSCP) is set to 40
" When using the older TYPE OF SERVICE (TOS) interpretation, the PRECEDENCE is
5, D is 0, T is 0, and R is 0