Reliability specifications
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Introduction
The 1643 AM / 1643 AMS provide various protective switching mechanisms where
necessary to support a high level of service availability.
Reliability and service availability
Protection mechanisms are supported by the 1643 AM / 1643 AMS:
• path protection or SNC/N protection (SubNetwork Connection protection with
Non-intrusive monitoring) for higher and lower order VCs
• 1+1 multiplex section protection (MSP) for STM-1 optical interfaces
Ethernet traffic can be protected by:
• spanning tree protocol
• link capacity adjustment scheme (LCAS)
1643 Access Multiplexer AM / 1643 Access Multiplexer Small AMS circuit-pack fit rates and
MTBF values
The following tables gives an overview of the circuit packs fit rates and MTBF values
(calculated according to RIN 8.0, confidence level 60 %).
1643 AM Products FIT (10
-9
/h) MTBF (years)
1643 AM TM-S1.1 - 16 x E1 75/120-B-DCPS
(CC: 109164418)
3599 31.72
1643 AM AD-S1.1 - 16 x E1 75/120-B-DCPS
(CC: 109164426)
4550 25.09
1643 AM AD-S4.1 - 16 x E1 75/120-B-DCPS
(CC: 109164434)
5924 19.27
1643 AM AD-L4.2 - 16 x E1 75/120-B-DCPS
(CC: 109164442)
5924 19.27
1643 AM TM-S1.1 - 16 x E1 75/120-B-ACPS
(CC: 109164459)
3865 29.54
1643 AM AD-S1.1 - 16 x E1 75/120-B-ACPS
(CC: 109164467)
4816 23.70
1643 AM AD-S4.1 - 16 x E1 75/120-B-ACPS
(CC: 109164475)
6268 18.21
1643 AM AD-L4.2 - 16 x E1 75/120-B-ACPS
(CC: 109164483)
6268 18.21
1643 AM AD-S1.1 - 16 x E1 75/120-B-18dB -
DC PS (CC: 109338103)
4550 25.09
Quality and reliability
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9-14
Alcatel-Lucent - Proprietary
See notice on first page
365-312-801R7.2
Issue 3, May 2007
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