Ericsson Marconi OMS 1200, Описание продукта

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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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There are two variants of Core Tributary card:
•
1HAT61107AAK – Original 2Mb/s Core TRIB
•
1HAT61107ABC – Enhanced 2Mb/s Core TRIB
Note: These cards differ only in their slot equipping rules for Core Protection as
defined in Table 7-2.. With the 1HAT61107ABC variant, Core Trib B does
not need to be fitted if 2Mbit/s protection is not required.
The AAK variant is now obsolescent, the ABC variant is preferred.
Table 7-2: OMS 1240 Protection Configuration Options
Protectio
n
Options
Conf
ig
Core A Core B Core TRIB
A
Core TRIB B
Unprotect
ed Core
Unprotect
ed 2M
Core Trib
A
✔
AAK or ABC
Protected
Core
Unprotect
ed 2M
Core Trib
B
✔ ✔
ABC
Protected
Core
Protected
2M Core
Trib
123
C
✔ ✔
AAK or ABC AAK or ABC
Notes:
1 When protecting the Core, if Core TRIB A is an AAK variant then Core TRIB B
must be installed and can be either variant.
2 A Core TRIB card cannot function without its associated Core card, thus Core
B must be installed to support Core TRIB B.
3 If Core TRIB A is an AAK variant then it is not possible to upgrade from Config.
“D” or “E” to Config. “B” without some level of 2M traffic loss. The sequence
necessary to minimise traffic hits is:
•
Force switch 2M traffic to B (short burst of traffic hits)
•
Replace Core TRIB A with an ABC variant
•
Force switch 2M traffic to A (short burst of traffic hits)