Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization [Electronic resources] نسخه متنی

Branch Office IPT Requirements

When connecting regional offices (branch office) to the main site, Survivable Remote Site Telephony (SRST) or Cisco CallManager Express (CCME) features are used. Use Table E-1 for model definitions).

Branch Office Name, Address

Member of CallManager Cluster

Bandwidth from the Hub, Type of Link (FR/Leased/ATM), Current Link Utilization

Number of IP Phones Planned

Number of IP Phones with Single Line Appearance

Number of IP Phones with Multiple Line Appearances

Current Branch Router Model, Memory, IOS Version

Codec, G.711, G.729, G.723, and WideBand

Direct Inward Dial (DID) or Calling Line ID (CLID) Requirements

Supplementary Services Requirements

Gateway Protocol, MGCP, or H.323

Gateway Trunk Type, Number of Trunks

Does This Branch Require Conferencing, Transcoding, MoH Resources? If Yes, Specify the Location of the Resources (Local/Remote)

Number of Analog Ports Required

Class of Restriction Requirements

BHCA Across the WAN Links

Number of Voice Mail Boxes

Centralized/Local Voice Mail

Recommended Branch Hardware, Software Upgrades

Notes/Comments

Information collected using Table E-6 is helpful in making the following determinations:

If a given branch site is being transformed as a standalone site using the CCME feature, that site will not be a part of the Cisco CallManager cluster. Hence, in Table E-6, for such sites, the second column is not applicable.

Collecting the information about current router hardware and software details is helpful in determining whether new hardware or software is required based on the number of phones connected in the branch site.

The choice of codec and the location of conferencing endpoints affect the amount of bandwidth required on the WAN links and the DSP resources required on the router.

BHCA affects the WAN bandwidth requirements.

The analog ports are typically used in branch sites to connect fax machines. These analog ports can also be used as backup lines to route calls to the PSTN if a primary connection fails.