1. A system comprising: a first device comprising: first logic configured to: receive a first session initiation protocol (SIP) invite message, identify a particular service associated with the first SIP invite message, identify a destination for the first SIP invite message using status information associated with a plurality of service selection servers, and forward the first SIP invite message to the destination; and a service selection server comprising: a memory configured to store allocation information associated with a plurality of application servers, and second logic configured to: receive the forwarded first SIP invite message from the first device, identify a first one of the application servers based on the first SIP invite message and the allocation information, and forward the first SIP invite message to the first application server.