Gai-tronics MRTI 2000 (No. PL1877A) Microprocessor Radio Telep Manuel d'utilisateur Page 125

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PL1877A Microprocessor Radio Telephone Interconnect Features
119 12/10
If the landline user desires to page several mobiles at once, he enters the paging input for the first mobile
as described above. Then, when the PL1877A has paged the mobile, he presses **. In response, the
PL1877A generates two beeps to indicate it is again awaiting paging input. Then, he enters the paging
input digits for the second mobile. This process continues until all the desired mobiles have been paged.
Attendant
The attendant dials #* (the attendant access command). When the PL1877A answers, it normally
generates two beeps to indicate that it is waiting on the attendant user to enter the required capcode digits
or user ID.
N
OTE: If the PL1877A is programmed to require an attendant access code before allowing selective
signaling (parameter 51 = 1), then it answers the phone line with one beep. After the attendant has
entered * (possibly preceded by an access prefix - parameters 139-144), the PL1877A generates two
beeps and awaits the paging input digits.
The attendant is allowed a certain time (set by parameter 1089) to enter the first input digit. When the
proper number of digits has been entered, the PL1877A generates the beeps. Then, it checks for a clear
channel before paging the mobile. If the channel is busy, the PL1877A returns several busy tones to the
attendant. The PL1877A continues to check for a clear channel for a maximum of one minute. If the
channel is not clear at the end of one minute, the PL1877A generates six disconnect beeps and returns to
idle.
When the channel is clear, the PL1877A pages the mobile. Then, if the PL1877A is not programmed for
direct access, it waits for the mobile to answer. Otherwise, the PL1877A immediately patches the
attendant through to the channel for the duration of the direct access timer.
If the attendant takes too long to enter the paging input digits, the PL1877A responds in one of three
ways, depending on the value of parameter 1082. It either disconnects the landline, transmits ring
signaling to the mobiles, or pages user ID 00 (if user ID 00 has been enabled).
If the attendant desires to page several mobiles at once, he enters the paging input for the first mobile as
described above. Then, when the PL1877A has paged the mobile, he presses **. In response, the
PL1877A generates two beeps to indicate it is again awaiting paging input. Then, he enters the paging
input digits for the second mobile. This process continues until all the desired mobiles have been paged.
N
OTE: While the PL1877A is awaiting input digits from the attendant (or after the PL1877A has
generated several busy tones to the attendant and is waiting for the channel to clear), the PL1877A de-
accesses the phone line. This is to allow the PL1877A to detect whether the attendant telephone is
placed on-hook. If it is, then the PL1877A terminates the call.
Mobile User (Mobile Revertive Signaling)
A mobile can selectively signal another mobile using the revertive signaling feature of the PL1877A.
The mobile dials the revertive code (*##) and the appropriate paging input digits (capcode digits or user
ID). After monitoring the channel for activity, the PL1877A sends the paging sequence.
Group Calls
A group call is a paging sequence that alerts several mobiles/portables/pagers at once. The PL1877A
supports group calls for 2-tone paging.
The ability of landline, attendant, and mobile users to initiate group calls can be independently enabled
or disabled via parameters 1009, 1010, and 1011.
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