Sagem 4450E - Manual (Page 30)

SAGEM 3P@C
3P@C Installation Manual
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2.3. 2.3. 2.3. 2.3. SMUB and Service Boards
2.3.1. 2.3.1. 2.3.1. 2.3.1. Service Processor Unit Board (SMUB)
1.1.1.1 Structure of the SMUB
As the control center of 3P@C 4450E, the SMUB is responsible for the data exchange and control
management of the system and it provides uplink interfaces for the ADSL and VDSL subscribers to
access the network.
The single-SMUB or dual-SMUB operating mode can be adopted for 3P@C 4450E. When the single-
SMUB operating mode is adopted, SMUB can be inserted in slot 0 or 1 of the 10U chassis. Hot
backup can be implemented in the system when the dual-SMUB operating mode is adopted, in which,
two SMUBs can be inserted in slot 0 and slot 1 of the 10U chassis respectively. The SMUB in slot 0
serves as the active one, and the SMUB in slot 1 serves as the standby one, as shown in the following
figure:
Figure 2-11 Slots of the SMUB
Active
SMUB
Standby
SMUB
Only the active SMUB is active at one time. The equipment can be managed only via the Console
interface on the active SMUB, and the Console interface on the standby SMUB is suspended.
The rear view of the SMUB is shown in Figure 2-12: