Tmst1 (For U.s. Only); Figure 3-119 Tmst1 (For U.s. Only) (S30810-Q2920-X) - Siemens HiPath 3000 Service Manual

3.3.39

TMST1 (for U.S. only)

Introduction
The TMST1 trunk board connects a digital trunk with HiPath 3750 and HiPath 3700. This is how
an ISDN primary multiplex connection is implemented (PRI, Primary Rate Interface) by means
of a T1 interface.
It can also be used for the following layer-1 operating modes:
Super Frame SF
●
Extended Super Frame ESF
●
A maximum of eight TMST1 modules can be used in a HiPath 3750 or HiPath 3700.
Rather than connecting to a main distribution frame (MDF), the TMST1 board connects to a
channel service unit (CSU). The CSU supplies the required secondary protection.
Switches and LEDs
Lockout
switch
LEDs
Figure 3-119 TMST1 (for U.S. only) (S30810-Q2920-X)
The lockout switch alerts the system software that the module will be removed so that no new
calls are routed to the board.
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
Up = in service
Down = out of service
H1
H2
boards.fm
Boards for HiPath 3000
Peripheral Boards
3-295