3com S21x Manual De Usuario

About the PathBuilder S21x Switch 

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The PathBuilder S21x switch is available with the optional components listed below 
factory-installed or as separate add-in daughtercards.

• Voice Relay Daughtercard

• Dual FXS Voice Relay Daughtercard

• RemoteVu Daughtercard

• DSU Daughtercard

• DIM Daughtercard

• DRAM SIMMs

Refer to the PathBuilder S200 Series Switch Daughtercard Installation Manual 
(T0020) for information on the installation of optional daughtercards.

The PathBuilder S21x switch supports the Voice Relay Daughtercard. This 
daughtercard supports one voice channel, using either an analog FXS or FXO 
interface. Both interfaces use RJ11 connectors.

The Dual FXS Voice Relay Daughtercard provides two FXS interface ports and 
support one voice channel each. The FXS port uses RJ45 connectors.

The PathBuilder S21x switch supports video over Frame Relay using the RemoteVu 
daughtercard. The RemoteVu Daughtercard provides two BNC connector, video 
ports accepting NTSC, PAL or SECAM video signal standards and an RJ-45, RS232/
485 camera control port used for Pan/Tilt/Zoom (PTZ) camera control. 

The DSU daughtercard functionality suits an extended range of 56 kbps 
point-to- point DDS1 interfaces that conforms to AT&T 62310 or 
ANSI T1E1.4/91-006. 

The DSU is FCC Part 68 registered.

Diagnostic loopbacks from the telephone company are supported; local diagnostics 
are activated from the CTP.