AT&T MERLIN LEGEND Release 2.0 System Programming Manual page 189

Programming Procedures
Type of DS1 Facility
Use this procedure to specify the type of facility (T1 or PRI) connected to a
100D (DS1) module.
If T1 type is programmed and the channels are used for emulation and/or AT&T
Switched Network (ASN) you must specify the type of channel emulation. If the
type is T1 and the type of channel emulation is tie trunk, you must specify the
transmit/receive loss parameter setting. The two valid settings are:
TIE-PBX Select when emulated tie trunks are used to connect to
another communications system (such as PBX or
Centrex). The transmit/receive parameter is set to 0/4.
Toll
Select when emulated tie trunks are used for ASN
services (such as Megacom™, Megacom 800, or
Software Defined Network). The transmit/receive
parameter is set to 0/6.
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.
Entering Programming
Console: Select Menu
PC/SPM: Type
Exiting Without Changes
To exit from any screen without making changes, select Exit on the console or
[F5]
press on the PC before saving your entry or menu selection.
3-98 DS1 Facilities
Sys Program
press any key
SPM
Exit
[F1] [F5]