Specifications

Chapter 9 – Supplementary Service Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 132
9.5 AT+CCUG Closed User Group
Description: The Test command returns the supported parameters.
The Read command returns if the Explicit CUG invocation is activated (in parameter <n>), which
CUG <index> is chosen, and if Preferential Group or Outgoing Access is suppressed (in
parameter <info>).
The Write command serves to activate or deactivate the explicit CUG invocation, to set the
desired index, and to specify if Preferential Group or Outgoing Access shall be suppressed.
Syntax: Test Command: AT+CCUG=?
Response: +CCUG:list of supported <n>, range of supported <index>, range of supported
<info>
OK
ERROR
+CME ERROR: <err>
Read Command: AT+CCUG?
Response: +CCUG:<n>, <index>, <info>
OK
ERROR
+CME ERROR: <err>
Write Command: AT+CCUG=[[<n>][, <index>][, <info>]]
Response: OK
ERROR
+CME ERROR: <err>
Parameters:
<n>
explicit CUG invocation options
0 Deactivate explicit CUG invocation. Default.
1 Activate explicit CUG invocation
<index>
0-9 explicit selection of CUG index
10 No index (preferred CUG taken from subscriber data). Default.
<info>
state of the call
0 No information. Default.
1 Suppress outgoing access
2 Suppress preferential CUG
3 Suppress preferential CUG and Outgoing Access.
Notes:
• The active settings for omitted parameters are retained without changes.
• Explicit CUG invocation means that at each call setup, CUG information is added to the called number.
• Upon delivery, settings are predefined with
<n>=0,
<index>=10,
<info>=0.
These delivery defaults cannot be recalled automatically.
• When starting a call with ATD, Parameter ‘G’ or ‘g’ of command ATD will have no effect if the option selected for
this single call is identical to the option already selected with AT+CCUG.
• Current settings are saved in the ME automatically.
• ATZ or AT&F do not influence the current settings.
• Some combinations of parameters may lead to rejection of CUG calls by the network.
• This command is PIN protected.
• This command is supported in airplane mode.