Lucent Technologies DDM-2000 OC-3

363-206-285
Transmission and Synchronization Interfaces
Issue 3 June 2001
5-11
Figure 5-6. DDM-2000 OC-3 Multiplexer Block Diagram — DDM-2000 FiberReach Host —
Single Homing
DS1
1
2(P)
Receive
Clocks to
the TGs
Main
External
Reference
Inputs
Receive
Clocks from
OLIUs
1
2(P)
DS1
DS1
DS1
DS1
Reference
Outputs
Intrashelf
Timing to Main
and Function
Unit Slots
Timing
Control
SYSCTL OHCTL
TG
1
2P
OLIU
(Note 2)
STS-1
OLIU
(Note 1)
OC-1
Notes:
1
2P
OLIU
(Note 2)
STS-1
OC-1
1
2P
OLIU
(Note 2)
STS-1
OC-1
(Note 3)
(Note 3)
(Note 3)
Function
Unit
Function
Unit
Function
Unit
1. 22 or 24-type OLIU.
2. 27-type OC-1 OLIU. One direction of two independent OC-1 rings.
3. One or two STS-1s. Shelf capactiy is 3 STS-1s (84 DS1s).
OC-3 or OC-12
OC-3 or OC-12