Specifications
ISU AT Command Reference  Summary of Result Codes 
Iridium Proprietary Version 2.45 
20 June 2011     117 
Table 11-1:  V.25ter/Hayes Result Codes (continued) 
as verbose  ‘+DR: V42B NONE’  Data call connected with no data compression. 
as verbose  ‘+DR: V42B TD’  Data call connected with V.42bis compression 
enabled on transmit direction. 
as verbose  ‘+DR: V42B RD’  Data call connected with V.42bis compression 
enabled on receive direction. 
as verbose  ‘+DR: V42B’  Data call connected with V.42bis compression 
enabled on both transmit and receive direction. 
Table 11-2:  GSM 7.07 Result Codes 
Numeric 
(
V0
)
V
erbose 
(
V1
)
Descri
p
tion 
as verbose  ‘+CR: ASYNC’  Asynchronous transparent data connection. 
as verbose  ‘+CR: REL ASYNC’  Asynchronous non-transparent data connection. 
as verbose  ‘+CME ERROR: <error>  Command not accepted. See section 5.56. 
as verbose  ‘+CREG: <stat>[,<lac>,<ci>] 
Registration indication status (unsolicited if 
enabled). See section 6.21. 
as verbose  ‘+CRING: ASYNC‘  Asynchronous transparent data call indication. 
as verbose 
‘+CRING: REL ASYNC‘  Asynchronous non-transparent data connection. 
as verbose 
‘+CRING: VOICE‘  Voice call connection. 
Table 11-3:  GSM 7.05 Result Codes 
Numeric 
(
V0
)
V
erbose 
(
V1
)
Descri
p
tion 
as verbose  ‘+CMTI: <mem>,<index>’ 
SMS-DELIVER message indication (unsolicited 
if enabled). See section 6.12. 
as verbose 
‘+CMT: 
[<alpha>],<length><CR><LF><pdu>’ 
(PDU mode) 
SMS-DELIVERs message indication (unsolicited 
if enabled). See section 6.12. 
as verbose 
‘+CDS:<length><CR><LF><pdu>’ 
(PDU mode) 
SMS-STATUS-REPORTs message indication 
(unsolicited if enabled). See section 6.12. 
as verbose 
‘+CMS ERROR: <error>  SMS command failed. See section 6.5. 
Table 11-4:  Iridium-specific Result Codes 
Numeric 
(
V0
)
V
erbose 
(
V1
)
Descri
p
tion 
as verbose  ‘READY’ 
Ready to receive SBD binary message data from 
DTE. See section 8.12. 
as verbose  ‘+AREG:<event>,<reg error>’  Auto-registration event report. See section 10.18. 
as verbose  ‘+CIEV:<sig><value>’  Indicator event report. See section 10.2. 
as verbose  '+ADJANT:<deployed>' 
User antenna adjustment is required. See section 
11.1. 










