NCU PARAMETERS
November 29, 1999
4-72
Address
Function
Unit
Remarks
4809BC
ISDN: 2100 Hz tone transmission
level
-N
4804BA
-0.5N
4804BC
(dB)
4809BD
Modem turn-on level (incoming signal
detection level)
Standard NCU (Conexant)
Turn on level: -37-0.5N (dBm)
Turn off level: “Turn on level” – 3 dBm
Optional G3 unit (Panasonic)
00 (Hex)
: -33 (dBm)
01 – 0A (Hex)
: -38 (dBm)
0B – 14 (Hex)
: -43 (dBm)
15 – 1F (Hex)
: -48 (dBm)
4809D2
V.8 procedure in manual reception
Bit 3
0: Disabled 1: Enabled
ANSam transmission timer
Bit 5 4 Setting
0 0 3.2 s
0 1 3.7 s
1 0 5.0 s
1 1 Not used
Do not change bits 0 to 2,
6 and 7.
4809DA
T.30 T1 timer
1 s
4809E0
bit 3
Maximum wait time for post
message signal
0: 12 s
1: 30 s
1: Maximum wait time for
post message
(EOP/EOM/MPS) can be
changed to 30 s.
Change this bit to “1” if
communication errors
occur frequently during
V.17 reception.
NOTES:
1. If you change the NCU country code and exit the service mode, the bit switch
country code (System Bit Switch 0F) will automatically be changed to the code
for the same country as the new NCU code.
The bit switch settings also automatically return to the defaults for that country,
including bit switches related to optional units. Therefore, for example, if 40MB
memory is installed, any data remaining in the memory will be lost.
2. If a setting is unnecessary, store FF in the address.
3. In Europe, if the country code is not specified, set it to UK (02).