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Port Specifications (Contd)
TRUNK PORTS
TRUNK TYPE
CIRCUIT PACK
SPECIFICATIONS
Auxiliary Trunk
TN763
● Capacity: 4 Circuits
● 3-pair interface:
Voice (T,R),
Signaling (S, S1),
Status (SZ, SZ1)
Direct Inward
TN753
● Capacity: 8 Circuits
Dialing (DID)
Trunk
●
2-Wire (600 Ohm Fixed
Impedance) Transmission
● Signaling: Wink Start,
Delay Dial, or Immediate
Dial.
Accepts Dial Pulse Signals
● Incoming Service Only
Tie Trunk
TN760B
● Capacity: 4 Circuits
● Supports Type I E&M,
Type I Compatible E&M or
Type V Simplex Signaling
● 4-Wire Transmission
● 3-Pair Interface
Transmit
Receive
Signaling (E&M)
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