S 2 /T 2 Interface; Te-S Simulation Mode; Nt-S Simulation Mode; S2/T2 Monitor - JDS Uniphase HST-3000 User Manual

Chapter 3 ISDN PRA testing
About PRA interfaces and the HST emulation modes
S /T interface
2 2
TE-S /T
2
simulation mode
NT-S /T
2
simulation mode
S /T Monitor The tester is used to monitor a TE on the S
2 2

PMP Monitor

DASS2 modes

PBX-U emulation The module can emulate a PBX and perform out-of-service
2
48
The S /T interface is the standard 4-wire (2 RX, 2 TX) inter-
2 2
face used by ISDN terminals on the terminal side of a NT1.
Each of the modes available for testing the S
described below.
The tester is used to replace terminal equipment connected to
2
the S /T interface. In this case, the tester can operate with a
2 2
maximum attenuation of 20dB.
The tester replaces the network device and operates on the
2
S /T interface. In this case, the tester can operate with a
2 2
maximum attenuation of 20dB.
The tester is used to monitor a device at the Protected Monitor
Point (PMP).
If you are using Digital Access Signalling System No. 2
(DASS2) protocol, the following modes are available.
testing before the PBX is connected
Tx1
HST
Rx1
Figure 12 PBX emulation
HST-3000 E1 Testing User's Guide
(Figure
ET
Network
/T interface are
2 2
/T interface.
2 2
12).