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ALLOWABLE UPGRADES AND DOWNGRADES OF VOICE CALLS FOR SELECTABLE TALKGROUPS IN GROUP REGROUPING

IP.com Disclosure Number: IPCOM000008818D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2002-Jul-16
Document File: 1 page(s) / 85K

Publishing Venue

Motorola

Related People

Chris Arthur Kruegel: AUTHOR

Abstract

Group Regrouping sessions in trunked systems involve combining two or more talkgroups into super groups, allowing members of the different talkgroups to communicate with each other. Normally this opera- tion is transparent to the subscriber user; the main dif- ference is the increased amount of voice activity brought about by having more users involved in dis- patch calls.

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MOTOROLA Technical Developments

ALLOWABLE UPGRADES AND DOWNGRADES OF VOICE CALLS FOR SELECTABLE TALKGROUPS IN GROUP REGROUPING

by Chris Arthur Kruegel

INTRODUCTION

   Group Regrouping sessions in trunked systems involve combining two or more talkgroups into super groups, allowing members of the different talkgroups to communicate with each other. Normally this opera- tion is transparent to the subscriber user; the main dif- ference is the increased amount of voice activity brought about by having more users involved in dis- patch calls.

  When a Group Regroup session is formed in cur- rent Motorola trunking systems, two super groups are created, a clear super group and a secure super group. Clear only talkgroups are placed in the clear super group and secure only talkgroups are placed in the secure super group. Clear/secure selectable talkgroups are placed into a super group based on the console's clear/secure setting for that talkgroup. For example, if the console is selected to clear for a selectable talk- group, that talkgroup will be put into the clear super group. Likewise, if the console is selected to secure for a selectable talkgroup, that talkgroup will be put into the secure super group for the Group Regroup session. Talkgroups in the clear super group are allowed to communicate only in clear and talkgroups in the secure super group are allowed to communicate only in secure. An audio patch is made at the console to link the two super groups together.

transmit clear. Likewise, if the console is selected to secure for the talkgroup, the subscriber is forced to transmit secure.

  Subscriber users who belong to normally selec- table talkgroups are forced to transmit clear or secure (based on the console settings) without any indication as to why this is occurring. For Group Regrouping to be truly transparent, selectable talkgroups should retain their clear/secure selectability. It is also desirable to provide this operation while allocating as few voice channel resources as possible.

THE S...