AT&T StarLAN 10 Manual de Instruções Página 544

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TECHNICAL SPECIFICATIONS
Port Specifications (Contd)
5-14
VOICE TERMINAL PORTS
STATION TYPE
CIRCUIT PACK
SPECIFICATIONS
Tip and Ring
Tip Ring Line
Single-Line
(ZTN78)
1-Pair Interface (Tip and Ring)
Sets
(Analog)
Analog signals modulated over DC loop
Loop Voltage: 24 V dc
Signaling: Dual Tone Multifrequency (DTMF)
or Dial Pulse
REN (max.): 1.2
DC Current (max.): 35 mA
Loop Range (24 AWG): 2,000 feet
In-building service only
Tip and Ring
Analog Line
Single-Line
(TN742)
1-Pair Interface (Tip and Ring)
Sets
(TN746B)
(Analog)
Analog signals modulated over DC loop
Loop Voltage: 48 V dc
Signaling: Dual Tone Multifrequency (DTMF)
or Dial Pulse
REN (max.): 5.0
DC Current (max.): 40 mA
Loop Range (24 AWG): 17,500 feet
Supports Out-of-Building, Extended (greater
than 2000 feet), Off-Premises, and Bridged
Station services (maximum of five bridged
stations, and two off-hook simultaneously).
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