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=[<trans_idle>[,<framed_idle>[,<framed_un_ov>[,<hd_auto>[,<crc_type>
[,<nrzi_en>[,<syn1>[,<syn2>]]]]]]]]
Defined Values
<trans_idle> 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).
<framed_idle> 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).
<framed_un_ov> 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.
<hd_auto> 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.
<crc_type> 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.)