Coastcom D/I Mux III System, Руководство пользователя

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Chapter 4. Configuration and Operation
154
Ext Slot-2 is the clock received from a line card in slot 2 of the D/I Mux III. Ext DB-9 is a connector on
the back of the D/I Mux III shelf (SYNC I/O) that will accept TTL, or differential signals, as a timing
source.
The Ext Rcvd T1-2 clock is timing recovered from a T1, or T1 clock source, on the T1-2 port.
The external clocks, Slot-2, Rcvd T1-2, and DB-9, must be in multiples of 1,600 Hz, from 8,000 -
1,544,000 Hz.
] SS
Set Clock Source
10:29:25---------- [ Transmit Clock Sources ] ---------03/08/96
Channel Bank Local Timing
Alarm Condition T1-1 Clock
---------------------------------------------------------------
No Alarm * Internal
LOC T1-2 -Slot-2
-DB-9
-Rcvd T1-2
LOC T1-1 Internal
- Choices * Current Alarm Condition
---------------------------------------------------------------
T1-2 LOC Alarm Clock Source
I) Internal
S) Ext Slot-2
D) Ext DB-9
2) Ext Rcvd T1-2
[I]
Apply Changes
Y) Yes
N) No
[Y/N] Y
Figure 4-63. Setting Clock Source in Single Channel Bank Local Timing
ST - Setting/Editing the Map Table
Enter ST to edit the map table, as represented in Figure 4-64.