Section 400-Programming
Chapter 1. System Programming (FF1)
DBS-2.3/9.2-400
DBS Manual - Revised April 2000
Page 1-109
CO Ring Cycle Detection Timer
Software Version: All Versions
Address: FF1 3# 15# (0-3)#
Description
This timer determines how long the DBS attempts to detect an incoming CO
ring cycle (6 seconds by default).
To ensure that the DBS can recognize incoming trunk calls, set this timer to
equal the duration of the ring cycle -- including the first “on” period and the
first “off” period. For example, if the ring cycle for an incoming trunk is 2
seconds on/ 4 seconds off, this parameter should be set to at least 6 seconds to
detect the full cycle. If this timer is set too short, the DBS will not recognize
valid CO ring signals.
See Figure 1-2 below for an example of proper CO ring cycle detection
timing for an incoming pattern of 2 seconds on/4 seconds off.
Figure 1-2. Example of a CO Ring Cycle and its Detection Timer
Programming
Related Programming
Inbound Ring Cycle Expansion Timer: FF1 3# 16# (0-15)#
2 seconds on
Incoming
Ring Cycle
2 seconds on
4 seconds off
CO Ring
Cycle
Detection
Timer
Length of CO Ring Cycle
Detection Timer=6 seconds
FF1 3# 15# (0-3)#
0=4 seconds
1=6 seconds
2=8 seconds
3=10 seconds
CO Ring Cycle Detection Timer setting:
Summary of Contents for DBS-2.3-400
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