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34
C
2: I
HAPTER
NSTALLATION
Inservice
T1-DSX/E1 ports
Serial (RS-366
and V.35/RS-449/
RS-530/X.21) port
Connecting to the CBR Module
The CBR module provides an RJ48 DSX interface for T1-DSX/E1 traffic. Line Build
Outs (LBOs) to DSX of up to 655 feet are supported. You must configure the LBOs
in the CBR DSX Configuration Menu. See "Configuring the CBR Module" in
Chapter 4, for details. You can typically make local connections to DTE equipment
without DSU/CSUs, as long as the equipment supports a direct T1-DSX/E1
interface and can recover a T1-DSX/E1 signal.
For connector pinouts, see "CBR Module Connector Pinouts" in Appendix A
If you are using a G703 coax physical connection to connect the E1 line to the
interface, you must use the E1 Balun Adapter (part number 3C63904).
The serial port of the PathBuilder S330/S310 CBR module has two types of
interface: V.35 for video data and RS-366 for video dial. These interfaces are
broken out from a 50-pin connector on the S330/S310 switch via a Y cable. Use
the V.35/RS-366 serial CBR connector to connect directly to H.320 video codec
devices such as PictureTel, Vtel, and CLI.
CBR Module LEDs In addition to the common LEDs described earlier in this
chapter, the following LEDs indicate the status of the CBR module. (See Figure 30.)
Inservice (green) — Powers up in the "off" state and illuminates when you
set the administrative status of the T1-DSX/E1 or serial port to In Service. See
"Configuring the CBR Module" in Chapter 4 for details about how to set the
administrative status of the ports on the CBR module.
ALARM (red) — Powers up in the "off" state and illuminates when an alarm
condition is detected on the corresponding T1-DSX/E1 or V.35 line.
Figure 30 CBR Module LEDs
Alarm
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