Tone duration +vtd, Syntax, Parameters and values – Synaccess Networks NP-0801DTM User Manual
Page 99: Notes, Commands for gprs, Gprs mobile station class +cgclass

3GPP TS 27.007 AT COMMANDS
99
HSPA+ AT Commands Reference Guide
Tone Duration +VTD
Set command sets the length of tones transmitted with +VTS command.
Read command reports the current Tone Duration, in the format:
Test command provides the list of supported
(list of supported
Syntax
Command
Command type
AT+VTD=
Set
AT+VTD?
Read
AT+VTD=?
Test
Parameters and Values
Duration of a tone.
0
The duration of every tone depends on the network. Default: 0.
1‐255
Duration of every tone in 1/10 sec.
Notes
Reference: 3GPP TS 27.007 and TIA IS‐101.
Commands for GPRS
GPRS Mobile Station Class +CGCLASS
Set command sets the GPRS class according to
Read command returns the current value of the GPRS class in the format:
+CGLASS:
Test command reports the range for the parameter
Syntax
Command
Command type
AT+CGCLASS=[
Set
AT+CGCLASS?
Read
AT+CGCLASS=?
Test
Parameters and Values
GPRS class.
“A”
UMTS. Default: “A”.
“B”
GSM/GPRS.
“CG”
Class C in GPRS only mode. GPRS only.
“CC”
Class C in circuit switched only mode. GSM only.