22 TimeSource 3100
Description
097-72020-01 Issue 9: November 2003
SSS SSSSSSS SSSS S SSSSS SSSSSSS S SSS S SSSSS SS
1
10 MHz Output
The BesTime Ensemble Timing Generator provides timing for the 10 MHz timing signal
available at the 10 MHz connector, which can be used for local cellular frequency or testing
purposes.
Two ESCIU Ports (990-72020-04 Systems Only)
This option provides a module for two E1 ports. The module mounts in the OPTIONS I/O
mountings on the connector panel. E1 traffic-carrying signals are synchronized using the
BesTime Ensemble Timing Generator. Jitter and wander are also removed before sending
the E1 signals to network elements.
If an alarm condition or power failure occurs, relays allow the E1 signals to bypass the
system. (See Figure 4.)
Figure 4. ESCIU Signals
Alarm Interface
The microprocessor delivers alarms to normally open dry-contact type connections. Alarms
are also indicated by the front-panel status lamps.
Communications Ports
Three RS-232 serial communications ports carry TL1 commands, responses, and
autonomous messages between the TimeSource 3100 and an external terminal.
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