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SENDING OF DATA TO THE CT2 CPPs (to be displayed on the CPP) during polling of the CPPs

IP.com Disclosure Number: IPCOM000007468D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2002-Mar-28
Document File: 2 page(s) / 109K

Publishing Venue

Motorola

Related People

Prash Gowda: AUTHOR [+2]

Abstract

In an environment where there are several pri- vate bases, the same handset may be registered to more than one ofthe private bases. When the hand- set is ringing due to polling from one ofthese bases, there is no information present on the handset which allows the user to know which one of the private bases is polling it.

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MOlVROLA Technical Developments

SENDING OF DATA TO THE CT2 CPPs (to be displayed on the CPP) during polling of the CPPs.

by Prash Gowda and Ng See Woon

STATEMENT OF PROBLEMS

  In an environment where there are several pri- vate bases, the same handset may be registered to more than one ofthe private bases. When the hand- set is ringing due to polling from one ofthese bases, there is no information present on the handset which allows the user to know which one of the private bases is polling it.

  Also, in the CT2 Two way calling system, to allow the user in the public environment to decide if an incoming call is to be answered, the Calling Line Identity (or the calling party's number) needs to be displayed on the CT2 handset. This display should be presented when the handset is being polled and ringing.

  The problems can be solved by sending display information to the handsets from the base stations during polling.

DESCRIPTION OF SOLUTIONS

  Two methods are described below. Both are able to send data before the link is established allowing the transfer of informational data during the polling of handsets.

METHOD 1

  During polling, the CFP transmits a fixed for- mat poll Address Code Word (ACW) and an optional variable format packet in MUX 2 on a continuous repeated basis (POLL, SIG, POLL, FI, POLL, NO-POLL...POLL, SIG, POLL, FI, POLL, NO-POLL). The RES bit in the NO-POLL IE is set to 1 to allow the handset to establish a link to the CFP before any user action to initiate the link request. The CPP at this point sends a LINK-RE- QUEST before the user has accepted the call, and the NULL FA (7,31) after the TERM--CAP and BAS-CAP exchange, in order to maintain the cor-

rect syntax at layer three of the protocol. The CFP then sends the DISP IE carrying useful information to the alerted CPP user. Examples of information are as described above, the Calling Party Number or Directory Number ofthe analog line connected a private base station.

METHOD 2

  The transmitted sequence in this case is POLL, SIG, POLL, FI, POLL, SIG, POLL, DIS-I?..POLL,...