CVOICE Chapter7 まとめ Part2

- Dial peers in a hunt group are selected according to criteria such as longest match, explicit preference, or random selection.

- Best practices include a default POTS dial peer and redundant Cisco UCM.

- When remote sites are involved, different path selection strategies are required, including site-code dialing, toll-bypass, and TEHO.

- Site-code dialing uses the concept of prefixing a site code in front of the actual extension and can be combined with toll-bypass to route calls over a WAN link instead of a PSTN connection.

- TEHO extends the concept of toll-bypass by routing calls over a WAN to the closest PSTN breakout to avoid costly long-distance and international phone charges.

- Site -code configuration requires that each site be assigned a unique site code.

- TEHO configuration requires that all calls be routed over the WAN unless the WAN is down.

- Calling privileges are used within a dial plan to define the destination a user is allowed to call.

- Calling privileges are implemented on Cisco IOS gateways using the Class of Restriction freature.

- For Cisco Unified CME, a corlist is directly assigned to an appropriate ephone. To assign a corlist in SRST mode, a corlist is matched to a range of directory numbers in Communications Manager fallback configuration mode.

- Configuring COR includes configuring named CORs and corlist, and assigning corlists to dial peers, ephones, or SRST.