Installation Procedures 55CBR Module LEDs The CBR module features the following front panelindicators:Inservice (green)—Powers up in the “off” state and illuminates when you set theadministrative 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 theadministrative status of the ports on the CBR module.ALARM (red)—Powers up in the “off” state and illuminates when an alarmcondition is detected on the corresponding T1-DSX/E1 or V.35 line.Figure 25 PathBuilder S330 CBR Module LEDsConnecting to the Voice Compression ModuleThe Voice Compression module provides an RJ48 DSX interface for T1-DSX/E1traffic. Line Build Outs (LBOs) to DSX of up to 655 feet are supported. You mustconfigure the LBOs in the VCM Port Configuration Menu. See “Configuring theVoice Compression Module” in Chapter 4, for details. You can typically make localconnections to DTE equipment without DSU/CSUs, as long as the equipmentsupports a direct T1-DSX/E1 interface and can recover a T1-DSX/E1 signal.Table 21 lists the VCM T1-DSX pinouts.If you are using a G703 coax physical connection to connect the E1 line to theinterface, you must use the E1 Balun Adapter (part number 3C63904).AlarmInserviceT1-DSX/E1 portsSerial (RS-366and V.35/RS-449/RS-530/X.21) portTable 21 VCM T1-DSX/E1 PinoutsPIN 1 RX (ring)PIN 2 RX (tip)PIN 3 NCPIN 4 TX (ring)PIN 5 TX (tip)PIN 6 NCPIN 7 NCPIN 8 NC
