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A method of playing back the missed voice in P25 trunking system

IP.com Disclosure Number: IPCOM000242374D
Original Publication Date: 2015-Jul-10
Included in the Prior Art Database: 2015-Jul-10
Document File: 2 page(s) / 23K

Publishing Venue

Motorola

Related People

Zhao, Dong: INVENTOR [+2]

Abstract

In current P25 system, subscriber users experience missing voice due to many reasons. In this paper a method is introduced to allow users to replay the missed voice conveniently by associating the call log and categorizing the call history list in accordance with the call status.

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A method of playing back the missed voice in P25 system

By Zhao Dong, Yu Larry

Motorola Solutions

 

ABSTRACT

In current P25 system, subscriber users experience missing voice due to many reasons. In this paper a method is introduced to allow users to replay the missed voice conveniently by associating the call log and categorizing the call history list in accordance with the call status.

PROBLEM

Subscriber users are prone to miss the voice in current P25 system. For example, the late entry call happens in group voice call, which results in the missing of the initial part of the voice. For another example, the high receiving BER (Bit Error Rate)/poor receiving signal on the verge of FNE (Fixed Network Equipment) coverage impacts the user to understand the received audio. So the need exists for allowing user to conveniently replay the missed voice for above cases.

 

SOLUTION

In order to resolve above problem, when a subscriber receives a call, it logs the call history with call status of (1).The late or normal entry group call; (2).With high or low receiving BER; (3).In a high or low noisy environment. Then the subscriber categorizes the call history log with the criteria of (1). The late entry group call is received; (2). High BER call is received; (3). In a high noisy environment. When any of above criteria is met, it means most likely the user will ask to replay the previous call.

With this new method that the call history log is associated with the call status(the normal/late entry, high/low BER, or high/low ambient noise), subscriber users could easily check and select a call list entry with the potential missed voice from the call history log, and initiate MCPR (Missing Call Playback Request) to FNE at any time. Or upon the termination of the call, if the call is the late entry group call, high BER received, or in a high noisy environment, the subscriber prompts the user to re-play this call.

OPERATION

Suppose the subscriber works in trunking mode, and FNE records the voice for every cal...