Alcatel MDR-8000 User Manual page 94

MASTER RING CONFIGURATIONS – Master rings are networks that consist entirely of a loop of
synchronous repeaters. All nodes in the same ring direction use the same clock timing. Timing may be
different for each direction. All service channel data is passed synchronously around the ring. The
status of the ring is monitored using messages in the ELMC channel.
SUBTENDING RING CONFIGURATIONS – Subtending rings are networks that connect asynchronously
to another ring at two locations (called primary and secondary connection points). The networks consist
of a string of synchronous repeaters. All nodes in the same direction use the same clock timing. Timing
may be different for each direction. All service channel data is passed synchronously within the
subtending ring section and asynchronously to the main ring. Asynchronous connection must use LMC1
for the ELMC connection. Messages are sent on LMC1 by the subtending ring primary and secondary
nodes to monitor for continuity of the synchronous connection.
SELECT RING REPEATER MASTER AT ANY ONE RADIO IN THE RING, TO ENABLE THE
CONFIGURATION THAT IS USED TO BREAK THE LOOP OF A SYNCHRONOUS RING. IN THIS
CONFIGURATION, THE RF SERVICE CHANNEL AND REPEATER SYNC ARE DISABLED (NORMALLY
ENABLED), PREVENTING THE RING FROM CLOSING ON ITSELF. WHEN A RING FAILURE OCCURS,
THE MASTER RECEIVES A RING FAIL MESSAGE FROM THE FAILED RADIO AND RESPONDS BY
ENABLING THE RF SERVICE CHANNEL AND REPEATER SYNC TO CONNECT THE SERVICE
CHANNELS. THE FAILURE IS WHAT NOW BREAKS THE SERVICE CHANNEL LOOP, PREVENTING
THE RING FROM CLOSING ON ITSELF.
SYSTEM ID:
RADIO TYPE:
RADIO CONFIG:
SYSTEM ALARM
RCV SWITCHING:
OPTIONS:
SELECT RING REPEATER NORMAL AT ALL RADIOS IN THE RING, EXCEPT THE ONE
PROVISIONED MASTER. THIS ENABLES THE CONFIGURATION THAT ENABLES RF SERVICE
CHANNEL AND REPEATER SYNC, ALLOWING SERVICE CHANNEL DATA TO PASS THROUGH
THE RF AND REPEATER PORTS. WHEN A FAILURE IS DETECTED ON THE RF OR REPEATER
PORT, THE ASSOCIATED RADIO SENDS A RING FAIL MESSAGE TO THE MASTER.
SELECT RING REPEATER PRIMARY WHEN THE RADIO IS IN THE MIDDLE OF A SUBTENDING
RING AND IS THE PRIMARY SERVICE CHANNEL CONNECTION POINT TO ANOTHER RING. IN
THIS CONFIGURATION, THE RF SERVICE CHANNEL AND REPEATER SYNC ARE ENABLED,
ALLOWING SERVICE CHANNEL DATA TO PASS THROUGH THE RF AND REPEATER PORTS.
WHEN A FAILURE OCCURS, THE RF SERVICE CHANNEL AND REPEATER SYNC ARE DISABLED.
SELECT RING REPEATER SECONDARY WHEN THE RADIO IS IN THE MIDDLE OF A
SUBTENDING RING AND IS THE SECONDARY SERVICE CHANNEL CONNECTION POINT TO
ANOTHER RING. IN THIS CONFIGURATION, THE RF SERVICE CHANNEL AND REPEATER
SYNC ARE DISABLED. WHEN A FAILURE OCCURS, THE RF SERVICE CHANNEL IS ENABLED.
Figure 4 - 2 DS1/E1, DS3, OC3/STM-1 Radio Configuration Provisioning (Sheet 3 of 4)
4-6
Note
ELMC: TEST1 RADIO LINK ID:
MDR-8000 DS1 16 LINES
HS Tx/HS Rx Ring Repeater TERMINAL
Terminal
ATPC Enabled A&B PA Present
Repeater
Ring Terminal
Visual/Audible RELAYS ON/NO
Ring Repeater
RSL-SW Enable Eye BER Disable
Option Key: Stat/Prov/WaySide
Disable
128 TCM
6-8 GHz
Normal
Normal
Primary
Secondary
Station Alarm 13-16
Master
LMW-9088
09/08/03