As you know, RTP uses port range 16384 to 32767 dynamically. Can we define any specific static port manually so that rtp always use that udp port for voice call. I am using 3800 series router for voip setup. I tried to find any configuration but couldn't.
My service provider says that he cann't assign priority to this long range rtp ports on its bandwidth manager. Are you sure, it is not possible? As i also could not found doc that mention commands regarding this.
I think they are not much familiar with differentiated services because they just provide point to point links and have not big setup. Anyhow thanks and reconfirm whether commands for defining static ports are available or not.. Thanks for Responding...
NBAR can properly classify RTP and RTCP, so you could use NBAR on the outbound GigEthernet interface to remark the packets to a specific ToS/DSCP value that would match your service provider's contracted CoS value(s).
You do have multiple classes of service in your contract with your service provider?
You mentioned in an earlier post that this is a satellite link. Not for voice (UDP) traffic, but have you tried Cisco RBSP Satellite optimizations for TCP over the Satellite link?
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