Cisco Systems 15310-MA A.1.6 LEDs, A.1.7 Push Buttons, A.1.8 BITS Interface, A.1.9 System Timing

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Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
78-19417-01
Appendix A Specifications
Cisco ONS 15310-MA SDH Shelf Specifications
A.1.6 LEDs
Table A-1 describes the system-level LEDs, located on the on the ONS 15310-MA SDH fan tray, and the
possible LED colors and their significance.
A.1.7 Push Buttons
The ONS 15310-MA SDH has the following push buttons:
• Lamp test: When momentarily pushed, lights all LEDs on the ONS 15310-MA SDH front panel. If
an LED has more than one color, all the colors will be cycled when the lamp test button is pushed.
Note Another use for the lamp test button is to reset the CTC password to its default value
(otbu+1). To reset the password, press the lamp test button for at least five seconds, release
it for a maximum of five seconds, then press it again for at least five seconds. After the
button is released, the default password is set.
A.1.8 BITS Interface
The ONS 15310-MA SDH has the following building integrated timing supply (BITS) specifications:
– Supports two BITS inputs and two BITS outputs
– The BITS I/O ports support a 100-ohm termination for external 2.048 Mbps for E1.
– Connector J4: BITS1; Connector J5: BITS2
A.1.9 System Timing
The ONS 15310-MA SDH has the following timing specifications:
• +/– 20 ppm SDH Synchronous Equipment Timing Source (SETS) free-running internal clock
• Maintains SETS holdover (+/– 4.6 ppm for first 24 hours) in the event of reference frequency loss
• Timing reference: External BITS, line optical port, any E1 clock, and internal clock
Table A-1 LED Description
LED Color and Meaning
FAIL Red indicates system failure or during initialization
CR Red indicates a critical alarm is present on the shelf assembly.
MJ Red indicates a major alarm is present on the shelf assembly.
MN Amber indicates a minor alarm is present on the shelf assembly.
REM Red indicates a remote alarm is present on the shelf assembly.
PWR A
PWR B
Green indicates that a DC power source present and within normal operating
range.
Red indicates that DC power source is not present, or is present and not within
normal operating range.