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Making Measurements
Measuring Jitter Tolerance
Measuring Jitter Tolerance
Description:
The jitter auto tolerance feature provides jitter tolerance measurements within the
Option 200 is
relevant ITU-T mask, G.823 low and high Q systems are provided for PDH (2, 8, 34,
required for Jitter
140 Mb/s).
measurement and
DS1 and DS3 masks are taken from ITU-T G.824 and Bellcore GR.499, Category 1
012 for PDH
and Category 2 equipment.
operation.
For SDH the masks provided are those specified in ITU-T G.958, type A or B, and in
ITU-T G.825. SONET masks are taken from GR-253. The jitter auto tolerance
feature is also available when ATM is selected as a payload.
PDH User Selectable Masks
Line Rate
2 Mb/s
8 Mb/s
34 Mb/s
140 Mb/s
DS1
DS3
SDH/SONET User Selectable Masks
Line Rate
STM-0
STM-1
STM-4
STM-16
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G.823
G.823 High Q G.823 Low Q
√
√
√
√
GR.253
G.825
√
√
√
√
√
√
√
G.824
GR.499 CAT 1 GR.499 CAT 2
√
√
√
√
√
√
G.958 Type A
G.958 Type B
√
√
√
√
√
√
√
√
137
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