Namespace Routing Language | Bird Internet routing daemon | Virtual Routing and Forwarding | Zone Routing Protocol | Optimized Link State Routing Protocol (OLSR) | Optimized Link State Routing Protocol | Local Routing Number | Ad Hoc on-Demand Distance Vector Routing | Ad hoc On-Demand Distance Vector Routing |
The call is switched using a call set up protocol (usually ISUP) between the telephone exchanges under an overall routing strategy.