User's Manual

Chapter 3 31
Using HDLC/LAP-D Protocol
Request Specific Processing
Received Data
When I-frames or UI-frames are received, the information field is sent t o
the associated ZLU
.
7 CW_TIMERS Set timers
This request is only allowed for non-UI terminals. The
protocol’s timers may be changed from their configured
values using this control write. This request should be
used with caution because the values configured with this
request will not be restored if the card is reset by ZCOM.
The control request data consists of three pairs of bytes.
Each pair of bytes consists of a Resolution and a Value.
The legal values for Resolution are as follows: 0 = don’t
set, 1 = 10msec, 2 = 100msec, 3 = 1sec, 4 = 10sec.
Note that these values are different from the values used
for the resolutions when configuring a terminal. The
Values are used directly. A zero Value will disable the
timer if the resolution is non-zero.
The first pair of bytes applies to T200, the second pair is
ignored (should be set to zero) and the third pair apply to
T203:
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
T200 Resolution (0-4) T200 Value (0-255)
0
T203 Resolution (0-4) T203 Value (0-255)