Specifications

AN93
INDEX
Rev. 0.8 169
switch-hook 5
synchronous DCE 21
System Interface 9
T
Taiwan 144
TBR21 ATAAB and TBR21 Type Countries 130
Termination 40–41, 80, 119
test circuit 119
Test mode 40, 79, 119
Testing 1, 119–120, 123
Thailand 144
Tone (DTMF) dialing 29
Tone detection 13–14, 73, 75
Transmit
Carrier 6
FIFO Almost Full 96–97
level adjust 66, 77
Level Register 77
Troubleshooting 159–161
Tunisia 145
TXD 21–22, 52, 92, 96
Typical Voltages 163
U
U78 66, 87, 99, 147
U7A 21, 66, 89, 148
U7C 90
U7D 90
UART 18, 51, 92, 94
UL1950 123
unscrambled ones detect time 21
Upgrades 54
U-Registers 1, 18–19, 26–27, 32, 53–54, 63, 69, 99, 122,
147, 160
address 27, 31, 63
Descriptions 63
Detailed Description 69
Read 31
Write 27, 32
US Bellcore 125
User-Access Register Read 31
V
V.23 Reversing 78
V.42 18–20, 30, 50, 53, 61
V.42/V.42b 100
V.42bis 5, 19–20, 42, 48
Verbal result codes 31, 53
VF connection rate limit 39
Visual Inspection 159
W
W dial modifier 28
wait for dial tone 31
delay timer 61
wake-on-ring 41
Window to look for dialtone 65
Wire Mode 20–21, 44, 89
X
XON/XOFF 45, 92