Motorola MTP850 Ex Product Information Manual page 182

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used. The random access protocol is also used if the DM-MS wishes to send a timing change
request to the master DM-MS.
Pre-emption requests may be sent during short data occupation.
Pre-emption and timing change requests may be sent while the channel is in circuit mode
occupation.
Pre-emption, timing change and changeover requests may be sent during channel reservation
periods.
19.4.1 DN232
Number of frames for the Master DM MS, during which it expects the DM repeater to re-transmit its
DM setup messages, in case the DM repeater presence signal was not received previously.
The range for this timer is 2 - 4 seconds.
The default is 4 seconds.
19.5 DMO Gateway Timers
A DMO Gateway is equipment that can fulfil two roles:
1. It acts as a repeater allowing calls between terminals from both the same and different sys-
tems.
2. It also enables system access to terminals in DMO.
A gateway may be installed at a site outside of a cell coverage area to provide extended coverage
for that cell in a particular direction.
This sub menu has the following 4 options:
19.5.1 DT301
This entry defines the time that the terminal will wait for a response from a DMO Gateway to a DMO
Gateway set up (BM-GSETUP) request message before timing out.
The range for this timer is 0 - 30 seconds.
The default is 1 second.
The following are related fields:
Paragraph 14.18 "DMO Gateway"
Paragraph 14.7 "Direct Mode (DMO) Reservation"
Paragraph 19.5.2 "DT302"
Paragraph 19.5.4 "DT308, Pre-emption via Gateway Timer"
Paragraph 19.5.3 "DT309"
6866588D21-D Chapter 3 - MTP850 Ex/MTP810 Ex Product Information Manual
Customer Programming Software (CPS)
March 2009