AT&T MERLIN LEGEND Release 3.1 System Programming Manual page 441

DS1 Facilities
Direction. Specifies whether the trunk operates in one- or two-way
direction. For one-way trunks, Outgoing Only or Incoming Only must also
be specified.
Trunk Seizure Type. Trunk seizure type is administered independently
for incoming or outgoing directions. Select one of the following: Wink
Start; Delay Start, or Automatic Start.
Answer Supervision Time. The time in milliseconds the answer
supervision signal must be present to be considered valid.
Disconnect Time. The time in milliseconds the disconnect signal must be
present to be considered valid.
Dial Mode. Dial mode is set independently for incoming or outgoing
directions (Inmode or Outmode). Select either Rotary or Touch-Tone.
NOTE:
Touch-Tone receivers are required on the far-end switch when the setting
is Touch-Tone.
Table 4–1 shows the factory setting for each S56 Data Network Service option
and the valid range for each threshold.
If you select T1, channels can emulate ground- or loop-start trunks, tie trunks, or
DID trunks in any combination. Note that unused channels must be specified as
unequipped.
If either T1 or PRI is selected, channels can be used for ASN services. When T1
channels are used for ASN services, each channel must be programmed for tie
trunk emulation.
If you select PRI, you must also perform additional procedures. At a minimum,
the Framing Mode and Zero Code Suppression procedures must be performed.
See "PRI Facilities" for more information.
Summary: Type of DS1 Facility
Programmable by
Mode
Idle Condition
Planning Form
Factory Setting
Valid Entries
Inspect
Copy Option
System manager
All
100D module idle
Form 2c, System Numbering: Line/Trunk Jacks
Form 3b, Incoming Trunks: DS1 Connectivity
(100D module)
T1, See Table 4.1 for options
T1, PRI
Yes
No
Programming Procedures
4–69