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Key Features

The Cisco EGW 2200 provides the following key features:

• The Cisco EGW 2200 applications run on select Intel-based Cisco platforms Media Convergence Servers (Cisco MCS). These are the same platforms used by other AVVID products.
• Simplified installation, provisioning, and management of key components on the Cisco EGW 2200 through use of Cisco's network appliance model:
  • Software is preloaded and configured on first use through configuration wizards.
  • Provisioning and administration are done using browser-accessible applications.
  • Upgrades are browser-accessible with electronic notification of new releases.
• Support for the most commonly used DPNSS calling features (based on BTNR188 Issue 5):
  • Add-on Conference
  • Basic call
  • Call Back When Free
  • Call Back When Next Used
  • Call Forward
  • Call Hold
  • Call Offer
  • Call Redirection
  • Call Waiting
  • Calling Name Display
  • Centralized Operator
  • Diversions
  • Extension Status
  • Loop Avoidance
  • Message Waiting Indicator
  • Night Service
  • Non-Specified Field
  • Route Optimization
  • Three Party Service: Shuttle, Transfer, and Add-on

Note: When DPNSS features are interworked between a legacy DPNSS PBX network and Cisco CallManager, the implementation of those features mimics the implementation of the features in a DPNSS network. For details and any exceptions, see Overview of DPNSS Features.

The Cisco EGW 2200 also provides these other capabilities:

• Call routing and number analysis
• Call limiting, so that you can specify a call limit (maximum number of calls) on the media gateway, H.323 interface to Cisco CallManager, or the Unity SIP interface
• Policy-based routing including:
  • Direct routing
  • Time-of-day routing
  • Holiday routing
  • Percentage-based routing
• Attachment of Cisco Unity unified messaging products to DPNSS and QSIG PBXs, providing Auto Attendant and Message Waiting Indication services.
• Ability to serve as a centralized access point to the PSTN using Cisco AS5000-series gateways
• Availability in single or continuous service dual (active/standby) configurations
• Standards that conform to best practices recommended for PBX to IP migration

Application Summaries

IP PBX—Interwork DPNSS PBXs with Cisco CallManager

This application provides a transition to IP telephony by adding an IP PBX Cisco CallManager cluster that can interwork with your existing DPNSS PBXs.

>> More details and illustration

Cisco Unity Voice Messaging—Attach Cisco Unity to Legacy DPNSS or QSIG PBXs

Cisco Unity advanced voice messaging (voice mail, unified messaging, and auto attendant ) can be added to DPNSS or QSIG TDM PBXs. The Cisco EGW provides signaling interworking between Unity's Session Initiation Protocol (SIP) interface and the TDM PBXs. TDM PBXs can be either DPNSS or QSIG, but not a mix.

You can also add Cisco Unity messaging to your IP PBX application. In the case of the IP PBX, the Cisco EGW provides signaling interworking for Unity's SIP interface and for the Cisco CallManager's H.323 interface to the DPNSS or QSIG PBXs.

>> More details and illustration

Tandem Signaling and Toll Bypass—Deploy TDM PBXs over IP network

In this application, TDM PBXs are IP-enabled through use of a voice-enabled router referred to as a DPNSS or QSIG media gateway. For TDM PBX-to-PBX calling, signaling is backhauled to the Cisco EGW which performs call setup. Unlike applications with TDM and IP PBXs, this application does not require DPNSS or QSIG interworking between the TDM and IP worlds. Instead, it uses transparent transmission of the signaling from one PBX to another over the IP network. The Cisco EGW performs call control between the TDM PBXs on the IP network, and can provide advanced centralized call routing that simplifies PBX network dial plans. All DPNSS and QSIG features are supported transparently.

Using the IP communications network provides improved, simplified central call control and toll bypass.

TDM PBXs can be DPNSS or QSIG, but not a mix.

>> More details and illustration

(Optional with Any Application) PSTN Interconnect—Add PSTN Access

You can provide PSTN access for the PBXs by having the Cisco EGW serve as a gateway to the PSTN through a PRI ISDN trunk. The trunk is terminated on a separate media gateway (referred to as a PRI gateway).

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