S-139
(38) SOFT SWITCH: #38
• Bit 8: This bit when set to 1 can get higher speed communication for V.34 under the
same line condition.
(39) SOFT SWITCH: #39
Bit
No.
Designation
Function
Initial
Setting
Bit HEX
8
Fine tune of 33.6
kbps/ 31.2 kbps
receiving speed for
V.34 modem
0: No - modem default setting
1: Yes
1
E
7
Set/Reset V.34
transmit level devia-
tion
0: Reset
1: Set
1
6
V.34 flag number
between ECM frame
1
5
0
4
Phase 2 guard tone
power level (V.34)
0: normal power level
1: -7 db of normal power level
0
1
3
Reserved
Reserved
0
2
Reserved
Reserved
0
1
V.8 /V.34 capability
0: No
1: Yes
1
Bit
No.
Designation
Function
Initial
Setting
Bit HEX
8
Disable V.34 TX for
V.34 modem
0: No
1: Yes
0
0
7
Disable V.34 RX for
V.34 modem
0: No
1: Yes
0
6
Flags number in
ECM frame for V.34
modem
0
5
0
4
Manual TX mode for
V.34 modem
0: V.8 - start handshake from V.8
1: V.17
0
1
3
Switch from V.17 to
V.34 if DIS bit 6 set
after received DIS
0: Yes - start V.8 handshaking.but only first
time
1: No - Continue start with V.17
0
2
Delay time in pri-
mary channel for
V.34 transmit after
CFR or MCF signal
0
1
1
Flags number
2
4
8
10
Bit 6
0
0
1
1
Bit 5
0
1
0
1
Flags number
1
2
3
4
Bit 6
0
0
1
1
Bit 5
0
1
0
1
Delay time
100 ms
200 ms
300 ms 500 ms
Bit 2
0
0
1
1
Bit 1
0
1
0
1
