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參數(shù)資料
| 型號(hào)： | T7630 |
| 廠商： | Lineage Power |
| 英文描述： | Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II)(雙 T1/E1 5.0V短距離通信終端器) |
| 中文描述： | 雙T1/E1的5.0V的短途終結(jié)者（終結(jié)者-Ⅱ）（雙個(gè)T1/E1 5.0V短距離通信終端器） |
| 文件頁(yè)數(shù)： | 89/210頁(yè) |
| 文件大?。?/td> | 3075K |
| 代理商： | T7630 |
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Lucent Technologies Inc.
Lucent Technologies Inc.
89
Preliminary Data Sheet
October 2000
T7630 Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II)
Alarms and Performance Monitoring
(continued)
Secondary Loopback Modes
There are two secondary loopback modes supported:
I
Secondary-single time-slot system loopback
(S-STSSLB)
I
Secondary-single time-slot line loopback
(S-STSLLB)
The loopbacks are described in detail below:
I
The secondary-STSSLB mode loops one and only
one received system time slot back to the transmit
system interface. The selected time-slot data looped
back is not processed by either the transmit framer or
the receive framer. The selected time slot does not
pass through the receive elastic store buffer and
therefore will not be affected by system-AIS, RLFA
conditions, or controlled slips events. Whenever the
secondary loopback register is programmed to the
same time slot as the primary register, the primary
the loopback.
in this mode).
primary loopback and test transmission modes.
Table 45. Summary of the Deactivation of SSTSSLB and SSTSLLB Modes as a Function of Activating the
Primary Loopback Modes
Primary Loopback Mode
STSSLB
STSLLB
BLB
CNUBT
Deactivation of S-STSSLB
If primary time slot = secondary
If primary time slot = secondary
Always
If the secondary time slot is TS0 or if the
primary time slot = secondary
Always
If the secondary time slot is TS0 or if the
primary time slot = secondary
Always
Deactivation of S-STSLLB
If primary time slot = secondary
If primary time slot = secondary
Always
If primary time slot = secondary
LLB
NUCLB
Always
If primary time slot = secondary
PLLB
Always
loopback mode will control that time slot. Once
selected, the desired time-slot position has the pro-
grammable line idle code in register FRM_PR22
transmitted to the line interface one frame before
implementing the loopback and for the duration of
I
The secondary-STSLLB mode loops one and only
one line time slot back to the line. The selected time
slot data is looped to the line after being processed
by the receive framer and it passes through the
receive elastic store. The selected time slot has the
programmable idle code in register FRM_PR22
transmitted to the system interface one frame before
implementing the loopback and for the duration of
the loopback. In CEPT, selecting time slot 0 has the
effect of deactivating the current loopback mode
while no other action will be taken (time slot 0 will not
be looped back to the line and should not be chosen
Table 45 defines the deactivation of the two secondary
loopback modes as a function of the activation of the
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| T8100 | H.100/H.110 Interface and Time-Slot Interchanger |
| T8110 | Version History |
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