Preliminary Information
MT9076
21.3
Per Time Slot Control Words (Pages 7 and 8) (E1)
The control functions described by Table 152 are repeated for each PCM-30 channel. Page 07H addresses
10H to 1FH correspond to time slots 0 to 15, while page 08H addresses 10H to 1FH correspond to time slots
16 to 31.Table 153 illustrates the mapping between the addresses of these pages and the CEPT channel
numbers.
Page 8H Address:
0
0
0
1
1
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
10 11 12 13 14 15
10 11 12 13 14 15
10 11 12 13 14 15
Equivalent PCM 30
Timeslots
Page 9H Address:
Equivalent PCM 30
Timeslots
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Bit
Name
Functional Description
7
TXMSG Transmit Message Mode. if high, the data from the corresponding address location of Tx
message mode buffer is transmitted in the corresponding PCM 30 time slot. If zero, the data
on DSTI is transmitted on the corresponding PCM 30 time slot.
6
5
ADI
Alternate Digit Inversion. If one, the corresponding transmit time slot data on DSTI has
every second bit inverted. If zero, this bit has no effect on channel data.
RTSL
Remote Time Slot Loopback. If one, the corresponding PCM 30 receive time slot is looped
to the corresponding PCM 30 transmit timeslot. This received time slot will also be present
on DSTO. If zero, the loopback is disabled.
4
3
LTSL
TTST
Local Time Slot Loopback. If one, the corresponding transmit time slot is looped to the
corresponding receive time slot. This transmit time slot will also be present on the transmit
PCM 30 stream. If zero, this loopback is disabled.
Transmit Test. If one, a test signal, either digital milliwatt (when control bit ADSEQ is one)
15
or PRBS (2 -1) (ADSEQ is zero), will be transmitted in the corresponding PCM 30 time
slot. More than one time slot may be activated at once. If zero, the test signal will not be
connected to the corresponding time slot.
2
1
0
RTST
RPSIG
- - -
Receive Test. If one, the corresponding DSTo time slot will be used for testing. If control bit
ADSEQ is one, a digital milliwatt signal will be transmit onto the DSTo channel. If ADSEQ is
15
zero the receive channel will be connected to the PRBS detector (2 -1).
Serial Signaling Enable. If one, the transmit CAS signaling will be controlled by
programming Page 05H. If zero, the transmit CAS signaling will be controlled through the
CSTI stream.
Unused.
Table 152 - Per Time Slot Control Words (Pages 7 and 8) (E1)
125
MITEL [ MITEL NETWORKS CORPORATION ]
