Octal/Quad Fxo Option Module (P/N 1200310L1/1200329L1); Octal E&M Option Module (P/N 1200313L1); Legacy Data Option Module (P/N 1200342L1); Nxt1 Hssi/V.35 Option Module (P/N 1200346L2) - ADTRAN Atlas 550 System Manual

Section 1 System Description ATLAS 550 System Manual

Octal/Quad FXO Option Module (P/N 1200310L1/1200329L1)

The Octal/Quad FXO Option Modules provide eight or four analog voice-grade interfaces. Each interface
supports loop-start and ground-start operation. Applications include termination of analog PSTN trunks
and connections to PBX station-side interfaces (Off Premise Extension – OPX).
Octal E&M Option Module (P/N 1200313L1)
The Octal E&M Option Module provides eight analog voice-grade interfaces (2-wire or 4-wire) for use as
tie-trunks (using E&M signaling) or dedicated transmission only (TO) interfaces (for additional data
services). The module supports E&M signaling types 1-5.

Legacy Data Option Module (P/N 1200342L1)

The Legacy Data Option Module provides four EIA-232 or V.35 interfaces (or any combination up to four)
for synchronous or asynchronous packet data applications. Protocols supported include SNA/SDLC,
Frame Relay, PPP, Transparent Bit-oriented (TBOP), and Transparent Async. The Legacy Data Option
Module includes an adapter cable to provide four EIA-232 (DB-25) interfaces. (An optional V.35 adapter
cable (P/N 1200348L1) is also available.)

NxT1 HSSI/V.35 Option Module (P/N 1200346L2)

The NxT1 HSSI/V.35 Option Module aggregates bandwidth of up to eight T1s (four T1s from the built-in
module interfaces and four from other installed T1 interfaces) into a single logical channel on the HSSI
interface or the V.35 interface (using an optional adapter cable). The NxT1 HSSI/V.35 Option Module
supports point-to-point T1 applications only. Any of the four built-in T1 ports of the NxT1 HSSI/V.35
Option Module can provide timing for the ATLAS 550 system.

Octal Ethernet Switch Option Module (P/N 1200766L1)

The Octal Ethernet Switch Option Module provides eight interfaces that can operate as 10BaseT or
100BaseTX. Each interface uses auto-negotiation to support Ethernet traffic at 10 Mbps or 100 Mbps,
half-duplex or full-duplex. Automatic MDI/MDIX crossover is provided to simplify LAN connections.

Resource Host Module (P/N 1200324L1)

The Resource Host Module provides an inexpensive way to use a desired plug-on resource module, such as
the Voice Compression Module. This module has no other functionality except to act as the base for the
plug-on resource modules.

4, 8, 16, 24 Channel Voice Compression Resource Modules (P/N 1200312Lx)

The Voice Compression Module (VCOM Module) combines with other ATLAS 550 components to
implement Voice over Frame Relay (VoFR). The Voice Compression Resource Modules support 4, 8, 16,
or 24 simultaneous compressed calls using G.723.1 or Netcoder compression algorithms.

32 Channel ADPCM Resource Module (P/N 1200752L1)

The 32 Channel ADPCM Resource Module (ADPCM-32) combines with other ATLAS 550 components
to implement packet voice capability over frame relay. The 32 Channel ADPCM Resource Module
supports up to 32 simultaneously compressed or packetized calls using G.726, G.711, or Transparent
algorithms.
22 © 2004 ADTRAN, Inc. 61200305L2-1B