Alcatel-Lucent MDR-8000 - Low Capacity DS1 Radios; High Capacity DS3 Radios; High Capacity OC3 Radios

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3.5.1 Low Capacity DS1 Radios
The MDR-8000 synchronous repeater connection J314 in a low capacity DS1 radio is used to
pass orderwire, fault alarm, ELMC,
and DS1 traffic between two (2) back-to-back low capac-
ity terminals over a common cable. The framing structure of the X/Y rail pairs being passed
over the synchronous repeater cable are the same for radios equipped to transport 4, 8, 12,
or 16 DS1s but unique for 2 DS1. Because of the difference in frame structure,
a radio con-
figured to transport 2 DS1 radio can only be connected via the J314 synchronous
repeater cable to another 2 DS1 radio.
There are no restrictions with any combinations of
capacity above 2 DS1. Connections for the service channels from a radio configured for 2
DS1 to a radio configured for 4, 8, 12, or 16 DS1s must be interconnected asynchronously.
The DS1 version of the radio is the only one that can pass its “through”
traffic across the synchronous repeater cable.
The E1 version of the radio uses all of the same components as the DS1,
with the exception of the capacity keys and LBOs. Therefore, its opera
-
tion is virtually identical to the DS1. However, an E1 radio cannot be
configured as a synchronous repeater with a DS1 radio.
3.5.2 High Capacity DS3 Radios
The MDR-8000 synchronous repeater connection J401 in a high capacity DS3 radio is used
to pass orderwire, fault alarm and ELMC data between two (2) back-to-back high capacity
terminals over a common cable. The frame structure of the data transported over the syn
-
chronous repeater cable on radios configured to transport 1 or 3 DS3 is the same for both
capacities. Repeater connections using J401 between a radio configured for 1 DS3 and a
radio configured for 3 DS3s is allowed.
Repeater connections between a radio config-
ured for DS1 or OC3 capacities to a radio configured for DS3 capacities using J314 to
J401 or J203 to J401 are not allowed.
Connections between a radio configured for DS1,
E1, or OC3 capacities and a radio configured for DS3 capacities must be interconnected
asynchronously.
3.5.3 High Capacity OC3 Radios
The MDR-8000s synchronous repeater connection J203 in a high capacity OC3 radio is
used to pass orderwire, fault alarm and ELMC data between two (2) back-to-back high
capacity terminals over a common cable. The orderwire, fault alarm and ELMC data is
multiplexed together into a standard T1. The multiplexed T1 data is the same for either
version of the OC3 radio, 10 MHz/1STS-1 or 30 MHz/3STS-1 payload. Therefore, repeater
connections using J203 between a radio configured for 1 STS-1 and a radio configured for 3
STS-1s is allowed. Repeater connections between an OC3 version of the radio and a non-
OC3 version of the radio using J203 to J314 or J203 to J401 are not allowed. Connections
between a radio configured for
OC3 capacities and a radio configured for DS1 or DS3
capacities must be interconnected asynchronously.
Note
Note