Marconi OMS 1200
Technical Product Description
221 02-ZAP 701 25/1 Rev C 2006-08-04
© Ericsson AB 2006
03PHB00004AAV-CUA
Commercial in confidence
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6.12 Default
SSMB
The transmitted SSMB timing marker value can be configured for all output ports when
in equipment Freerun mode, or when timing marker operation is disabled, as
described in Section 6.3. Any of the SSMB codes in Table 6-6 may be configured.
Table 6-6: SSMB Timing Marker from MSOH S1 Byte (Defaults)
Serial
SSMB code bits:
5 6 7 8
Quality Description
1
0 0 0 0
16
Quality unknown (treated as Undefined)
2
0 0 0 1
16
Undefined
3
0 0 1 0
1
Traceable to G.811
4
0 0 1 1
16
Undefined
5
0 1 0 0
2
Traceable to G.812 transit clock
6
0 1 0 1
16
Undefined
7
0 1 1 0
16
Undefined
8
0 1 1 1
16
Undefined
9
1 0 0 0
3
Traceable to G.812 local clock
10
1 0 0 1
16
Undefined
11
1 0 1 0
16
Undefined
12
1 0 1 1
4
Traceable to G.813 clock
13
1 1 0 0
16
Undefined
14
1 1 0 1
16
Undefined
15
1 1 1 0
16
Undefined
16
1 1 1 1
16
Not to be used for synchronisation
Note:
Default: - 1011 (G.813).
6.13
SSMB Code to Quality Level Assignment
Quality levels between 1 and 16 may be configured against each SSMB code. One (1)
is the highest quality level. Only the codes assigned by the operator may be used
when performing the configuration described in Sections 6.9, 6.11.1.
Note:
Defaults: - as Table 6-6.
6.14 SASE
Mode
The equipment can be configured in Stand Alone Synchronisation Equipment mode
(SASE) or one of the Enhanced SASE Modes (ESM). An external SASE regenerator
is used to clean the timing signal on the T4 output before it is fed back into the T3
input.
•
Options:
