3Com 3C10200 NBX Installation Guide - Page 32

32 CHAPTER 1: INTRODUCTION Table 10 NBX 100 NCP Connectors and LEDs 1 Status LEDs S1 and S2 - Indicate operating system status. ■ S1 and S2 both flashing (approximately 2 flashes per second). The hardware is initializing. ■ S1 on and S2 off. The operating system has started successfully. ■ S1 and S2 are both on. The operating system software has not started successfully. ■ S1 and S2 flash in an alternating pattern. A file system check is in progress, possibly due to an improper shutdown. The boot process will take longer than normal. S3 - Indicates the status of Music-On-Hold (MOH). ■ S3 flashing (approximately 2 flashes per second). The MOH processor is initializing. If this flashing continues for more than 2 minutes, the processor has not started successfully. ■ S3 solid on. The MOH processor has started successfully. ■ S3 flashing slowly (approximately 1 second on and 1 second off). The MOH processor has started successfully, but no music source is connected. 2 VOL This adjusting screw controls the volume of Music-On-Hold. 3 MOH Mini-jack (mono or stereo) that accepts Music-On-Hold audio (maximum 2V peak to peak) from the line output of a CD player, tape player, or other music source. 4 Paging This RJ-11 connector provides an audio output or a dry contact switch connection for use with a public address system. 5 Ext. Alert Reserved for future use. 6 10BT Uplink RJ-45 connector provides means to connect to an external and LINK LED Ethernet switch or hub. Be sure to program the switch or router on the other end for 10 MB operation. 7 COM1 DB-9 connector that provides an RS-232 (DCE) TTY terminal connection for access to system CLI commands and status messages. For information on how to connect to the NCP using the Console connector, see "Connecting a Computer to a Console Port" on page 196. 8 COM2 Reserved for future use.