Longshine LCS-8056C2 - Manual (Page 74)

Commands for Host-Processed Modems Reference Manual
3-52 Conexant 100498E
3.2.8 Synchronous Access Mode Commands
+ESA - Configure Synchronous Access Mode
This extended-format compound parameter controls the manner of operation of the
Synchronous Access Mode in the modem.
Enabling Synchronous Access Mode enables the use of the 8-bit command characters defined
in Table 9/V.80 of the Draft ITU-T Recommendation V.80 (DATA COMMUNICATION
OVER THE TELEPHONE NETWORK; In-Band modem Control and Synchronous Data
Modes for Asynchronous DTE).
Syntax
+ESA=[[,[,[,[,
[,[,[,]]]]]]]]
Defined Values
Decimal number which specifies the bit sequence transmitted by
the modem when a transmit data buffer underrun condition occurs,
while operating in Transparent sub-Mode. The options are:
0 In Transparent sub-Mode, modem transmits 8-bit
SYN sequence on idle. Modem receiver does not
hunt for synchronization sequence (default and
fixed).
Decimal number which specifies the bit sequence transmitted by
the modem when a transmit data buffer underrun condition occurs
immediately after a flag, while operating in Framed sub-Mode.
The options are:
0 In Framed sub-Mode, modem transmits HDLC flags
on idle (default and fixed).
Decimal number which specifies the actions undertaken by the
modem when a transmit data buffer underrun or overrun condition
occurs immediately after a non-flag octet, while operating in
Framed sub-Mode.
0 In Framed sub-Mode, modem transmits abort on
underrun in middle of frame. (Default.)
1 In Framed sub-Mode, modem transmits a flag on
underrun in middle of frame, and notifies DTE of
underrun or overrun.
Decimal number which specifies whether or not, in V.34 half-
duplex operation, additional procedures besides those specified in
§ 12/V.34 will be performed by the modem when switching from
primary channel to secondary channel operation, and vice versa.
This subparameter should not be commanded.
Decimal number which specifies the CRC polynomial used while
operating in Framed sub-Mode. The options are:
0 CRC generation and checking disabled. (Default and
fixed.)