Browse Prior Art Database

PROVIDING VOICE MAIL FOR iDEN PRIVATE CALL USERS VIA THE iDEN WIRELINE ADAPTER

IP.com Disclosure Number: IPCOM000008226D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2002-May-29
Document File: 2 page(s) / 106K

Publishing Venue

Motorola

Related People

Dan Coombes: AUTHOR [+3]

Abstract

The goal of a service provider is to maximize air time usage, increasing revenues. Failed calls negatively affect air time usage; one important example in the iDEN system is a private call which can not be completed due to unavailability of the target subscriber. This article describes a method to complete these calls to a Voice Mail System (VMS). This will increase revenue to the service provider by completing previously failed calls, as well as creating new revenue when messages are retrieved. This method is applicable to all systems offering dispatch services; the iDEN system is used as a frame of reference.

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MO7'OROLA Technical Developments

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PROVIDING VOICE MAIL FOR iDEN PRIVATE CALL USERS VIA THE iDEN WIRELINE ADAPTER

by Dan Coombes, Valy Lev, and Kamala Urs

  The goal of a service provider is to maximize air time usage, increasing revenues. Failed calls negatively affect air time usage; one important example in the iDEN system is a private call which can not be completed due to unavailability of the target subscriber. This article describes a method to complete these calls to a Voice Mail System (VMS). This will increase revenue to the service provider by completing previously failed calls, as well as creating new revenue when messages are retrieved. This method is applicable to all systems offering dispatch services; the iDEN system is used as a frame of reference.

  In the iDEN system, dispatch calls are processed in the Dispatch Application Processor (DAP). The DAP connects to the Enhanced Base Transceiver Stations (EBTS), which provide RF coverage. A VMS does not connect to the DAP, since voice mail is traditionally offered only to interconnect customers. We propose adding an iDEN Wireline Adapter to the system to provide an interface to the voice mail system. This adapter will connect to the DAP in the same manner that a cell site (EBTS) currently connects. This is illustrated in figure 1. Voice and signaling are carried to/from the EBTSs on frame relay links; the signaling is transported to the DAP, while the voice is routed to other EBTSs via the packet switch.

The iDEN Wireline Adapter provides the following functionality:

1) EBTS-DAP signaling to manage virtual circuits for voice packet routing
2) MS layer 3 signaling to provide setup and termination of calls
3) Bearer channel manipulation to provide VSELP<->PCM banscoding

4) Termination to a voice mail system

  The adapter will register several non-existent mobiles (pseudo-mobiles) at the site it is associated with upon initialization; the DAP and wireline adapter will use the identities of these pseudo- mobiles to complete calls destined to the voice mail system as described below.

Sequence of events:

1) MS1 initiates a private call to MS2.
2) MS2 is un...