Instruction manual

TECHNICAL SPECIFICATIONS
Port Specifications (Contd)
TRUNK PORTS
TRUNK TYPE CIRCUIT PACK
SPECIFICATIONS
DS1 Interface
TN767
● Capacity: 24 Circuits
● 4-Wire Transmission
● 3-pair Interface:
Transmit
Receive
Loopback
Ground Start
ZTN76
Trunk
● Capacity: 8 Circuits
● 2-wire (600 Ohms or RC Balance)
Transmission
● Network Signaling: Ground Start
● Two-way or Incoming-only Service
Loop Start
ZTN77
Trunk
● Capacity: 8 Circuits
● 2-wire (600 Ohms or RC Balance)
Transmission
● Network Signaling: Loop Start
● Two-way or Incoming-only Service
5-18
November 1995