Cisco Systems 9000 Manual De Usuario

 lists the pin-to-signal correspondence between the cable connector pins and the alarm 

connector relay contacts.

The SYNC 0 and SYNC 1 ports are timing synchronization ports. They can be configured as Building 
Integrated Timing Supply (BITS) ports or J.211 ports (

Both ports must be configured to be the same mode. It is not possible to use external BITS and J.211 
sources at the same time.

When configured as BITS ports, they provide connections for an external synchronization source for 
establishing precise frequency control at multiple network nodes, if required for your application. The 
RSP/RP card contains a synchronous equipment timing source (SETS) that can receive a frequency 
reference from an external BITS timing interface or from a clock signal recovered from any incoming 
Gigabit Ethernet or 10-Gigabit Ethernet interface. The RSP/RP SETS circuit filters the received timing 
signal and uses it to drive outgoing Ethernet interfaces.

The BITS input can be T1, E1 or 64K 4/. The BITS output can be T1, E1 or 6.312M 5/.

When configured as J.211 ports, they can be used as Universal Timing Interface (UTI) ports to 
synchronize timing across multiple routers by connecting to an external timing source.

When lit, these LEDs indicate for BITS:

Green (LINK)—Connection is alive.

Amber (FAULT)—A fault has occurred.

1

Critical alarm NC

NC (normally closed) connected to CM (common) when 
there is no Critical alarm

2

Critical alarm CM

Common

3

Critical alarm NO

NO (normally open) connected to CM (common) during a 
Critical alarm

4

Major alarm NC

NC (normally closed) connected to CM (common) when 
there is no Major alarm

5

Major alarm CM

Common

6

Major alarm NO

NO (normally open) connected to CM (common) during a 
Major alarm

7

Minor alarm NC

NC (normally closed) connected to CM (common) when 
there is no Minor alarm

8 

Minor alarm CM

Common

9

Minor alarm NO

NO (normally open) connected to CM (common) during a 
Minor alarm