TISP4070H3LM THRU TISP4095H3LM, TISP4125H3LM THRU TISP4220H3LM,
TISP4240H3LM THRU TISP4400H3LM
BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
NOVEMBER 1997 - REVISED APRIL 1999
typical circuits
MODEM
TIP
TIP
WIRE
WIRE
FUSE
R1a
RING DETECTOR
HOOK SWITCH
D.C. SINK
Th3
Th2
PROTECTED
EQUIPMENT
Th1
E.G. LINE CARD
TISP4350
OR
TISP4400
SIGNAL
R1b
RING
WIRE
RING
WIRE
AI6XBK
AI6XBM
Figure 14. MODEM INTER-WIRE PROTECTION
Figure 15. PROTECTION MODULE
R1a
Th3
SIGNAL
Th1
Th2
R1b
AI6XBL
D.C.
Figure 16. ISDN PROTECTION
OVER-
CURRENT
PROTECTION
SLIC
PROTECTION
RING/TEST
PROTECTION
TEST
RELAY
RING
RELAY
SLIC
RELAY
TIP
WIRE
S3a
R1a
Th4
Th5
Th3
S1a
S2a
SLIC
Th1
Th2
R1b
RING
WIRE
S3b
TISP6xxxx,
TISPPBLx,
½TISP6NTP2
S1b
S2b
VBAT
C1
220 nF
TEST
EQUIP-
MENT
RING
GENERATOR
AI6XBJ
Figure 17. LINE CARD RING/TEST PROTECTION
P R O D U C T
I N F O R M A T I O N
10
POINN [ POWER INNOVATIONS LTD ]
