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Browse Prior Art Database

AUTOMATIC VOICE/MESSAGE SERVICES IN A CT2 TWO-WAY CALLING SYSTEM

IP.com Disclosure Number: IPCOM000008214D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2002-May-28
Document File: 2 page(s) / 110K

Publishing Venue

Motorola

Related People

Gibson Ang Soon Teck: AUTHOR

Abstract

The public voice/message service, as shown in Figure 1, makes use of TBS, HLR/VLR and CT2 Two Way Calling System's database to allow the voice messages from the caller to be stored in blocks of, for example, lo-15 sec.

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Technical Developments

AUTOMATIC VOICE/MESSAGE SERVICES IN A CT2 TWO-WAY CALLING SYSTEM

by Gibson Ang Soon Teck

DESCRIPTION

  The public voice/message service, as shown in Figure 1, makes use of TBS, HLR/VLR and CT2 Two Way Calling System's database to allow the voice messages from the caller to be stored in blocks of, for example, lo-15 sec.

  When a calling party makes a call to a CT2 Two Way Calling subscriber's handset DN, the net- work will communicate with the HLR/VLR to determine the location of the handset. The HLR/VLR looks up its data base for the subscriber and obtains the DN of the TBS where the subscriber is at and makes a DN-enquiry to the TBS. The TBS will then check to determine if there are any free lines available and if the handset is currently engaged with the TBS. The following are valid responses from the TBS to the VLR:-

can be informal and/or instructional. The caller will then have a choice of leaving a voice message or a non-voice message/data in the VLR or dropping the call without leaving a message.

  When the subscriber finishes with the call or when free lines are made available again in the TBS, the TBS will do an automatic call back using the CALL BACK table to the VLR voice mail. By using the ISDN subaddressing, the VLR can inform the TBS if that are any new message(s) stored for that subscriber. If new messages are available, the TBS will ring the handset and when the subscriber picks up the call, he/she will be notified of the new message(s) and he/she will have the option either to receive the message(s) or delay the receipt of the message(s).

If the HLR/VLR receives a DN-Response, it will

mNm the TBS DN to the network which will then route the call to a designated TBS. The handset will then be polled for 15 seconds. If the handset is out of range or turned off, there will not be a response from the handset during the 15 second poll. This will imply a deregistration of the handset from the system. If the subscriber is registered for public voice/message services, the TBS will grab a free line and make a call...