Lucent Technologies 8.2 Manuel D’Utilisation
DEFINITY ECS Release 8.2
Administrator’s Guide
Administrator’s Guide
555-233-506
Issue 1
April 2000
Screen reference
1022
Trunk Group
17
TTL Type
Specifies the type of terminating test line (TTL) selected for testing trunks. The
TTL type determines what ATMS tests can be completed and thus which
threshold values need to be administered.
TTL type determines what ATMS tests can be completed and thus which
threshold values need to be administered.
The following table explains the differences between types of terminating test
lines:
lines:
The far-end switch containing the TTL may be any of the following:
■
System 85 R2 switch, equipped with the Maintenance/Test Board
(TN771B)
(TN771B)
■
System 75 R1V2 and beyond, all of which contain the circuitry required to
perform the TTL function
perform the TTL function
Valid entries
Usage
105-w-rl
105 with return loss
105-wo-rl
105 without return loss
high-lts
high-level tone source
low-lts
low-level tone source
100
100 type
102
102 type
Type TTL
Description
Example
105-w-rl
Full range of 18
measurements or some
defaults for return loss used
(56A)
measurements or some
defaults for return loss used
(56A)
TN771B, ZLC12 and
SN261B circuit packs
and new 56A
mini-responder
SN261B circuit packs
and new 56A
mini-responder
105-wo-rl
Cannot return default values
for far-end return loss
for far-end return loss
Older 56A
mini-responder
mini-responder
high-level-tone
Sends a fixed sequence of
tones at 0 dBm
tones at 0 dBm
ZLC12 and SN261B
circuit packs
circuit packs
low-level-tone
Sends a fixed sequence of
tones at -16dBm
tones at -16dBm
SN261B circuit pack
100
Up to 5 measurements that
sends a 1004 Hz tone then a
quiet termination
sends a 1004 Hz tone then a
quiet termination
102
One measurement that sends
a 1004 Hz tone
a 1004 Hz tone