Benefits of Multisite WAN with Distributed Call-Processing Deployment
The main benefits of the multisite WAN with distributed call-processing deployment
model are as follows:
■ Cost savings when you use the IP WAN for calls between sites
■ Use of the IP WAN to bypass toll charges by routing calls through remote site gateways,
closer to the PSTN number dialed (that is, tail-end hop-off [TEHO])
■ Maximum utilization of available bandwidth by allowing voice traffic to share an IP
WAN with other types of traffic
■ No loss of functionality during an IP WAN failure
■ Scalability to hundreds of sites