IP Telephony Hosted Call Agent


Another service that enterprises investigate for some remote offices is a hosted IP telephony call agent (IP Centrex). The enterprise assumes that this service will be coupled with an IP PSTN service (as discussed in the preceding section) to provide access for telephone calls to and from the PSTN.

Ask your provider the following:

  • IP telephony hosted call agent Do you offer, or plan to offer, such a hosted call agent service? If planned, please provide a timeline.

  • Call agent type What technology platform is your IP hosted call agent service provided on?

  • Administration How is the service administered? What type of administrative interface is provided for visibility into a user's configuration?

  • Service management APIs Do you provide any APIs for automated provisioning, dial plan management, and so on from the Cisco Enterprise Management tools?

  • Enterprise telephony integration Does your service permit integration with other enterprise telephony infrastructure? If so, can your service be configured to accept an arbitrary dial plan, such as pressing 8 plus a three-digit global site code plus a four-digit extension?

  • Enterprise voice mail integration Can your service integrate with an enterprise-operated voice mail or unified messaging system such as Cisco Unity? Does your service provide its own voice mail or unified messaging service? If so, what provisions are available for its integration with an enterprise voice mail network, such as Cisco Unity?

  • IP phone application deployment If this service is supported on Cisco CallManager, do you allow the enterprise to configure or update applications for use by the IP phone?

  • SRST capability Is your call agent service compatible with the Cisco Survivable Remote Site Telephony (SRST) in case of WAN failure?

  • Emergency calling (call agent) Does your IP PSTN service make any provisions for emergency service (for example, a local PSTN gateway with a handful of analog lines)? What special handling, if any, is required for such capability?




Selecting MPLS VPN Services
Selecting MPLS VPN Services
ISBN: 1587051915
EAN: 2147483647
Year: 2004
Pages: 136

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