Preliminary Information
MT9075B
Bit
Name
Functional Description
Bit
Name
Functional Description
7
SYNC Receive Basic Frame Alignment.
SYNC indicates the basic frame
alignment status (1 - loss; 0 -
acquired).
7
RIU0
Receive International Use Zero.
This is the bit which is received on
the PCM 30 2048 kbit/sec. link in bit
position one of the frame alignment
signal. It is used for the CRC-4
remainder or for international use.
6
5
MFSYNC Receive Multiframe Alignment.
MFSYNC indicates the multiframe
alignment status (1 - loss; 0 -
acquired).
6 - 0 RFA2-8 Receive Frame Alignment Signal
Bits 2 to 8. These bit are received
on the PCM 30 2048 kbit/sec. link in
bit positions two to eight of frame
alignment signal. These bits form
the frame alignment signal and
should be 0011011.
CRCSYN Receive CRC-4 Synchronization.
CRCSYN indicates the CRC-4
multiframe alignment status (1 -
loss; 0 - acquired).
4
3
2
REB1 Receive E-Bit One Status. REB1
indicates the status of the received
E1 bit of the last multiframe.
Table 38 - Receive Frame Alignment Signal
(Page 03H, Address 11H)
REB2 Receive E-Bit Two Status. REB2
indicates the status of the received
E2 bit of the last multiframe.
CRCRF CRC-4 Reframe. A one indicates
that the receive CRC-4 multiframe
synchronization could not be found
within the time out period of 8 msec.
after
detecting
basic
frame
synchronization. This will force a
reframe when the maintenance
option is selected and automatic
CRC-4 interworking is de-selected.
1
0
RED
RED Alarm. RED goes high when
basic frame alignment has been lost
for at least 100 msec. This bit will be
low when basic frame alignment is
acquired (I.431).
CRCIWK CRC-4 Interworking. CRCIWK
indicates the CRC-4 interworking
status (1 - CRC-to-CRC; 0 - CRC-
to-non-CRC).
Table 37 - Synchronization Status Word
(Page 03H, Address 10H)
43
MITEL [ MITEL NETWORKS CORPORATION ]
