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Section 400-Programming
Inbound Ground Start Detection Timer
Software Version: CPC-B Version 1.0 or higher
Address: FF1 3# 21# (1-8)#
Description
This timer determines how long a CO Tip ground signal must be present
before the DBS recognizes it as a valid incoming call (4 seconds by default).
When the CO sends a call to a ground-start DBS trunk, it signals the incoming
call by grounding the Tip side of the trunk.
In most cases, this timer should be set to 3 seconds or longer. Otherwise, the
DBS may generate false ringing when Tip ground is not quickly removed at
the end of a call.
Programming
Table 1-28 Inbound Ground Start Detection Timer values
Related Programming
Outbound Ground Start Detection Timer: FF1 3# 20# (1-8)#
Trunk Circuit Type: FF2 (Trunk)# 21# (0-4)#
DBS-2.3/9.2-400
FF1 3# 21# (1-8)#
Inbound Ground Start Detection Timer setting
Default: 4 (4 seconds) (see table below)
Setting
1
1 second
2
2 seconds
3
3 seconds
4
4 seconds
5
5 seconds
6
6 seconds
7
7 seconds
8
8 seconds
DBS Manual - Revised April 2000
Chapter 1. System Programming (FF1)
Value
Page 1-115
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