3Com S330 manual DS3 UNI Module LEDs

Installation Procedures 57

LOF (RED)—Powers up in the “off” state and illuminates when a LOF (Loss of Frame) condition is detected on the incoming DS3. The LOF LED is off when the signal is in frame. It reflects the LOF state of the DS3 in real time (no integration of the state is needed).

LOCD (RED)—Powers up in the “off” state and illuminates when a LOCD (Loss of Cell Delineation) condition is detected on the incoming DS3 under HEC (Header Error Control) framing. The LOCD LED is off when delineations are obtained. It reflects the LOCD state of the DS3 in real time (no integration of the state is needed).

Figure 27 DS3 UNI Module LEDs

LOCD

LOF

LOS

ALM

INS

The DS3/E3 UNI shares the same queue (Queue 1) as the Group 1 IMA UNI; therefore, if a DS3/E3 expansion card is installed in slot 9, the system deletes Group 1 and all corresponding VCs on startup and generates an information only alarm. Furthermore, you cannot add Group 1 if a DS3/E3 expansion card is installed—either in the chassis or in the database. If you change the card type for slot 9 to DS3/E3 via the List Card menu, Group 1 and the corresponding VCs are not deleted until the system is restarted.

Step 5: Connect the In order to configure application connections and an IP address for SNMP support, Management Terminal you must connect a management terminal to the PathBuilder S330/S310. To do

this, follow these steps:

1Connect a VT 100 terminal to the RS-232 (console) port on the front of the PathBuilder S330/S310.

2Use the VT100 terminal to input an IP address for the PathBuilder S330/S310. See “Setting up Communication Parameters” in Chapter 3 for details.

3Establish communication between the PathBuilder S330/S310 and any management terminal in one of these ways:

■Direct RS-232 using the VT100 terminal or VT100 emulator, as described above

■Direct 10BaseT on the Management CPU card using an IP Telnet session