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T1
RDTU3A Call Data Information
8-12 Strata CTX I&M 06/04
TLCS-900
stack pointer
and program
counter
information
SP = xxxxxxh PC = yyyyyyh
Watch Dog Timer
reset will occur.
Data-HWY
code
CH.xx DTyy DRzz DDT1/0
xx = channel number, from 0 to 23
yy = DHin data code (RDTU3A to RCTU) See Table 8-9.
zz = DHout data code (RCTU to RDTU3A) See Table
8-10.
DDT1 means Don’t Disturb Time. DDT0 is normal time.
Changing of yy or zz
or DDT will occur.
Each voice channel’s
DHin and DHout data
will be indicated.
Table 8-9 DT (DHin) Data Code
Data (Hex) Meaning
00 No error T1 unit operation is good.
01 Receive B-bit fall down (Ringing signal for CO Loop/Ground)
02 Receive B-bit rise up (Ringing signals for CO Loop/Ground)
09 Receive Off-Hook from line
0A Receive On-Hook from line
11 Receive DP Dial 1
12 Receive DP Dial 2
13 Receive DP Dial 3
14 Receive DP Dial 4
15 Receive DP Dial 5
16 Receive DP Dial 6
17 Receive DP Dial 7
18 Receive DP Dial 8
19 Receive DP Dial 9
1A Receive DP Dial 0
21 Receive A-bit rise up (Idle signal for CO Ground)
22 Receive A-bit fall down (Seizer signal for CO Ground)
23 Receive answer from line
40 No error
41 Frame-bit error
42 CRC error
43 Frame-bit error and CRC error
44 Slip error
45 Frame-bit error and Slip error
46 CRC error and Slip error
47 Frame-bit error and CRC error and Slip error
Table 8-8 RDTU3 Indications
(continued)
Indication
Type
Indication Timing