User`s guide

32
Command Option Function
+ES= p,q,r
p options: Specifies the originate-modem’s Request Error
Correction
0 Direct mode
1 Normal mode
2 LAP-M Only
3 LAP-M or MNP
4 MNP Only
6 Initiate Sync Access modem when connection
is established
q options: Specifies the answer-modem’s Fallback Error
Correction
0 EC optional, fallback to Normal mode
1 EC optional, fallback to Direct mode
2 EC required (LAP-M or MNP)
3 EC required (LAP-M only)
4 EC required (MNP only)
r options: Specifies the originate-modem’s Fallback Error
Correction mode
0 Direct mode
1 Normal mode
2 EC optional, fallback to Normal mode
3 EC optional. Fallback to Direct mode
4 EC required (LAP-M or MNP)
5 EC required (LAP-M only)
6 EC required (MNP only)
8 Initiate synchronous access mode when
connected
+ ESA Synchronous Access Mode Configuration
+ESA= a,b,c,d,e,f
a options: Specifies the Idle in Transparent sub-mode
0 Computer transmits 8 bit SYN sequence on idle.
Computer does not hunt for synchronization
sequence
b options: Specifies the Idle in Framed sub-mode
0 Computer transmits HDLC flags on idle
c options: Specifies under-run and over-run in Framed
sub-mode
0 Computer transmits Abort on an under-run
within a frame
1 Computer transmits a Flag on an under-run
within a frame, and notifies the modem of any
under-run or over-run
d options: Specifies half-duplex control. Not available
e options: Specifies the Cyclic Response Code (CRC)
type
0 Disable. No CRC generation or checking.
1 In Framed sub-mode, the computer generates
16-bit CRC in the Transmit direction and the