Quectel UG Series User Manual

UMTS/HSPA Module Series
WCDMA UGxx AT Commands Manual
WCDMA_UGxx_AT_Commands_Manual Confidential / Released 91 / 247
Parameter
7.5. AT+CHUP Hang up Call
AT+CHUP cancels all voice calls in the state of Active, Waiting and Held. For data connections, use ATH.
Example
RING //Incoming call
AT+CHUP //Hang up call
OK
7.6. +++ Switch from Data Mode to Command Mode
The +++ character sequence causes the module to switch from data mode to AT command mode. It
allows inputting AT commands while maintaining the data connection with the remote device.
<mode> 0 ATH is disconnected
1 ATH is ignored but "OK" response is returned
AT+CHUP Hang up Call
Test Command
AT+CHUP=?
Response
OK
Execution Command
AT+CHUP
Response
OK
ERROR
Maximum Response Time
90s, determined by network.
Reference
3GPP 27.007
+++ Switch from Data Mode to Command Mode
Execution Command
+++
Response
This command is only available when TA is in data mode.
The“+++” character sequence causes the TA to cancel the
data flow over the AT interface and switch to command mode.
This allows you to enter AT command while maintaining the
data connection with the remote server or, accordingly, the
packet domain connection.
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Quectel UG Series Specifications

General

Brand	Quectel
Model	UG Series
Category	Control Unit
Language	English