363-206-285 Detailed Level Procedure: DLP-553
Issue 2, February 2000 Page 20 of 20
DDM-2000 OC-3 MULTIPLEXER
Figure 14 – Example of DS3 Transmission Test in Dual Ring Interworking
Network
rtrv-state-path command
indicates Ring 2 active.
sw-path-sts1 or sw-path-vt1
used to switch path.
IN
OUT
IN
OUT
MAIN 2
OLIU
MAIN 1
OLIU
ABC
IN
OUTIN
OUT
MAIN 2
OLIU
MAIN 1
OLIU
AB C
EC-1 EC-1
rtrv-state-path command
indicates Ring 2 active.
sw-path-sts1 or sw-path-vt1
used to switch path.
RING 2 ACTIVE
RING 2 ACTIVE
IN
OUT
IN
OUT
MAIN 2
OLIU
MAIN 1
OLIU
ABC
IN
OUT
IN
OUT
MAIN 2
OLIU
MAIN 1
OLIU
EC-1
EC-1
ABC
CO 3 CO 4
rtrv-state-path command
indicates Ring 1 active.
sw-path-sts1 or sw-path-vt1
used to switch path.
RING 1 ACTIVE
RING 1 ACTIVE
MAIN 2
OLIU
MAIN 1
OLIU
A
BC
IN OUT
IN
OUT
RT 1
RING 2 ACTIVE
Ring 1
Ring 2 Ring 2
Ring 1
CO 1 CO 2
FT-2000 OC-48 line switched ring
RCVR
TRMTR
RCVR
TRMTR
DS1, DS3, EC-1
RING 1 ACTIVE
MAIN 1
OLIU
MAIN 2
OLIU
A
BC
IN OUT
IN
OUT
RT 2
Ring 2
Ring 1
DS1, DS3, EC-1
Ring 2
Ring 1
rtrv-state-path command
indicates Ring 1 active.
sw-path-sts1 or sw-path-vt1
used to switch path.
RCVR
TRMTR
RCVR
TRMTR
TRMTR/RCVR
TRMTR/RCVR
Primary Node
Secondary Node
STS1E
STS1E
RCVR
TRMTR
RCVR
TRMTR
TRMTR/RCVR
Primary Node
STS1E
RCVR
TRMTR
RCVR
TRMTR
TRMTR/RCVR
Secondary Node
STS1E
TRMTR/RCVR
RCVR
TRMTR
CO 5
TRMTR/RCVR
RCVR
TRMTR
CO 6
Ring 2
Ring 1
Ring 2
Ring 1
Ring 2
Ring 1
Ring 2
Ring 1
Ring 2
Ring 1
Ring 2
Ring 1
Ring 2
Ring 1
Ring 2
Ring 1
TRMTR RCVR
TRMTR
RCVR