Maintenance architecture
Issue 3.4.1 June 2005
245
Avaya DEFINITY Server SI and CSI
Maintenance architecture
Software and maintenance architecture recovery
The Communication Manager maintenance architecture is designed to detect and correct errors
as they occur. This greatly reduces events that can cause a system outage. This also enables
quick identification (fault isolation) to a replaceable subassembly. This automatic assessment is
done constantly, in the background of normal operation, so errors can be addressed early and
proactively. Component self-testing, subassembly self-testing, error detection and correction,
and system reconfiguration and alarming escalation paths are all elements of this architecture.
The system software is designed to recover from intermittent failures, and to continue providing
service with a minimum of disruption. Firmware that runs each circuit pack does similar tasks at
the module level, working tightly with the system software.
Figure 72: Maintenance management architecture
on page 246 shows the various levels of
maintenance strategies that are built into the communication system.
Table 52: Avaya DEFINITY Server SI and CSI hardware availability for two reliability
configurations
1
1. Running Avaya Communication Manager (September 30, 2002 data).
Sub-
system
Standard reliability
(single processor carrier)
High reliability
(CSI only)
Failures/
year
MTBO
(years)
Availability
2
(%)
2. The lower number is the equivalent availability for MTTR of 2 hours, which is attainable with technicians
and spares on site. See also
Reliability and availability
.
Failures/
year
MTBO
(years)
Availability
2
(%)
SI Processor
Complex
0.219
4.6
99.99 /
99.995
<0.01095
>91.3
>99.9995
SCC1 or
MCC1 Media
Gateways
0.153
6.5
99.993 /
99.997
0.0657
15.2
99.997
Summary of Contents for Application Solutions
Page 1: ...Avaya Application Solutions IP Telephony Deployment Guide 555 245 600 Issue 3 4 1 June 2005 ...
Page 20: ...About This Book 20 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 21: ...Issue 3 4 1 June 2005 21 Section 1 Avaya Application Solutions product guide ...
Page 22: ...22 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 106: ...Call processing 106 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 124: ...Avaya LAN switching products 124 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 139: ...Issue 3 4 1 June 2005 139 Section 2 Deploying IP Telephony ...
Page 140: ...140 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 186: ...Traffic engineering 186 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 204: ...Security 204 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 228: ...Avaya Integrated Management 228 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 274: ...Reliability and Recovery 274 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 275: ...Issue 3 4 1 June 2005 275 Section 3 Getting the IP network ready for telephony ...
Page 276: ...276 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 356: ...Network recovery 356 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 366: ...Network assessment offer 366 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 367: ...Issue 3 4 1 June 2005 367 Appendixes ...
Page 368: ...Appendixes 368 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 394: ...Access list 394 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 414: ...DHCP TFTP 414 Avaya Application Solutions IP Telephony Deployment Guide ...