3657–05 2–Wire Foreign Exchange Subscriber/Private Line Automatic Ringdown (2W FXS/PLARD) Channel Unit
■Document Purpose
▲This document describes and provides installation and operation information for the Wescom 3657–05 2W FXS/PLARD channel unit.
■Equipment Function
▲The Charles Industries 3657–05 2W FXS/PLARD channel unit, shown in Figure 1, is designed to operate in a Wescom Digital Carrier Terminal to provide a variety of subscriber interfaces presently provided by the 3657–00 2W FXS, 3657–04 2W FXS, 3657–02 2W FXS/GT, 3657–70 2W FXS, and the 3660–02 PLARD/MRD.
■Equipment Features
▲The 3657–05 2W FXS/PLARD includes the following features:
◆Compliance with AT&T Publication 43801
◆Prescription attenuation (0 to 16.5dB) for the transmit and receive levels
◆Compliance with FCC Part 68 and UL1459
◆309D type post-equalization
◆On-board comp net and BOC
◆Jack for mounting optional 3690–11/12 Precision Balance Network subassemblies
◆Switch-selectable 900/600 +2.15F impedance at the 2W port
◆Front-panel bantam jacks for accessing the 2W port
◆Front panel BUSY LED
◆Switch-selectable signaling for FXS, PLARD, and MEGACOMsm compatibility
◆Optional loop-start or ground-start signaling
◆Immediate-start and wink-start MEGACOM service for ground-start outgoing calls
◆Optional continuous or interrupted ringing in PLARD mode
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2–Wire Foreign Exchange Subscriber/Private Line Automatic Ringdown (2W FXS/PLARD) Channel Unit 、 2W FXS/PLARD channel unit |
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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June 2000 |
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Issue 3 |
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102 KB |
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