[c-nsp] QoS on ingress

[Jay Nakamura]

I can't seem to figure out what to do with my situation, wondering if
anyone had encountered this.

Situation :
Router : 1841 IOS 12.4T or 15.0M
Internet T1, two eth Interfaces
There are VoIP traffic (SIP & RTP) and general internet traffic

VoIP provider does not tag SIP/RTP with any kind of QoS in IP header.
(DSCP/IPP)  Internet provider can do QoS based on IPP but since VoIP
traffic is not marked, it's not useful.

Problem to solve : how to not drop >ingress< VoIP traffic when
internet traffic is high as much as possible without capping the
non-VoIP traffic to less than T1 bandwidth.

Caveat : I understand that since it's not getting policed at the
egress from the provider, any solution is not going to be perfect

I can't limit the traffic on the Eth interface egress because traffic
can go to either eth interface.

Any thoughts?