What are the two most likely driving forces motivating businesses to integrate voice and data into converged networks? (Choose two.)
Voice networks cannot carry data unless the PRI circuits aggregate the BRI circuits.
Their PSTNs cannot deploy features quickly enough.
Data, voice, and video cannot converge on their current PSTN structures.
Voice has become the primary traffic on networks.
WAN costs can be reduced by migrating to converged networks.
VoIP provides transport of voice over the IP protocol family. IP makes voice globally available regardless of the data-link protocol in use (Ethernet, ATM, Frame Relay). With VoIP, enterprises do not have to build separate voice and data networks. Integrating voice and data into a single converged network eliminates duplicate infrastructure, management, and costs.
Figure 14-7 shows a company that has separate voice and data networks. Phones connect to local PBXs, and the PBXs are connected using TDM trunks. Off-net calls are routed to the PSTN. The data network uses LAN switches connected to WAN routers. The WAN for data uses Frame Relay. Separate operations and management systems are required for these networks. Each system has its corresponding monthly WAN charges and personnel, resulting in additional costs.
With separate voice and data networks,
Figure 14-7 Separate Voice and Data Networks
Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 14