1. A method, comprising: filtering an ingress call based on a plurality of ingress-call parameter values; converting a filtered ingress-call parameter value and at least one filtered ingress-call-peer parameter value from a plurality of ingress-call-peer parameter values to an egress-call parameter value and an egress-call-peer parameter value, respectively; filtering an egress call based on a plurality of egress-call parameter values, the plurality of egress-call parameter values including the egress-call parameter value; and modifying a parameter value for the egress call based on a plurality of egress-call-peer parameter values, the plurality of egress-call-peer parameter values including the egress-call-peer parameter value.