Nortel Networks M3905 Manual Do Utilizador
35
Additional asynchronous features
CALL CONNECTED.SESSION STARTS
Additional synchronous information
Use
fifi and fi‡
(HDLC On) for Group IV FAX. Use
fifi and fifl (Bisync On)
for video.
When V.25
fifi) is turned on, the MCA automatically switches to synchronous
mode. When in the V.25 mode, auto answer is not available.
If an MCA in synchronous mode calls another data module in asynchronous
mode, the call is connected. You must drop the call.
mode, the call is connected. You must drop the call.
Parity and character length on the MCA
In Asynchronous mode the MCA is designed to work with 8 bit data characters.
You can use various parity settings, but the total character length must equal 8
bits. The MCA accepts the following character lengths and parity settings:
You can use various parity settings, but the total character length must equal 8
bits. The MCA accepts the following character lengths and parity settings:
8 data bits, no parity bit
7 data bits + one bit of Even parity
7 data bits + one bit of Odd parity
7 data bits + one bit of Mark parity
7 data bits + one bit of Space parity
For ASCII data, 8 bits no parity equals 7
bits with space parity.
7 data bits + one bit of Even parity
7 data bits + one bit of Odd parity
7 data bits + one bit of Mark parity
7 data bits + one bit of Space parity
For ASCII data, 8 bits no parity equals 7
bits with space parity.
The MCA controls parity only when it displays prompts before the data call is
established. In this case, the MCA outputs the prompts to the DTE with the parity
settings defined with P23–P26, or it determines parity automatically with
the <
established. In this case, the MCA outputs the prompts to the DTE with the parity
settings defined with P23–P26, or it determines parity automatically with
the <
c
> <
c
>. sequence.
Once the data call is established, the MCA does not check or regenerate parity.
The MCA will transport the 8 bit character to the far end with the parity
unchanged.
The MCA will transport the 8 bit character to the far end with the parity
unchanged.