Motorola UbiSurf SM56 At Commands Reference Manual page 18

Table 4: AT+ (Plus) Commands
-16
Command Command Option Option
Command Command Option Option
0
1
2
3
4
6
q options:
0
1
2
3
4
r options:
0
1
2
3
4
5
6
8
+ESA
+ESA=a,b,c,
d,e,f
a options:
0
b options:
0
c options:
0
Motorola Confidential Proprietary
Description Description
Description Description
Direct mode
Normal mode
LAP-M Only
LAP-M or MNP
MNP Only
Initiate Sync Access mode when connection is estab-
lished
Specifies the answer-modem's Fallback Error Cor-
rection mode
EC optional, fallback to Normal mode
EC optional, fallback to Direct mode
EC required (LAP-M or MNP)
EC required (LAP-M only)
EC required (MNP only)
Specifies the originate-modem's Fallback Error Cor-
rection mode
Direct mode
Normal mode
EC optional, fallback to Normal mode
EC optional, fallback to Direct mode
EC required (LAP-M or MNP)
EC required (LAP-M only)
EC required (MNP only)
Initiate synchronous access mode when connected
Synchronous Access Mode Configuration
Specifies the Idle in Transparent sub-mode
Computer transmits 8 bit SYN sequence on idle.
Computer does not hunt for synchronization
sequence
Specifies the Idle in Framed sub-mode
Computer transmits HDLC flags on idle
Specifies under-run and over-run in Framed sub-
mode
Computer transmits Abort on an under-run within a
frame