Yes you can do that. The technique is to use translation-profile at port or pots DP level, to add a special prefix that will match the dial-peer of your choice. Said dial-peer will remove the special prefix before sending out the call.
See the following document, that is about voip-to-pots, but uses the same technique.
Introduction: The "external-out enable" command is available for
configuration under the "router ospf process" in case of the IOS-XR
operating system. This command basically enables advertisement of
intra-area routes on the device as external routes in th...
Introduction Basic configuration for netflow Scale parameters for
netflow Netflow support Architecture Packet flow for netflow Inside the
LC CPU Netflow Cache size, maintenance and memory Sample usage Cache
Size Aging Permanent cache Characteristics Which...