All About Circuits Forum  

Go Back   All About Circuits Forum > Software, Microcomputing, and Communications Forums > Embedded Systems and Microcontrollers


Embedded Systems and Microcontrollers Discussion forum for projects and working with embedded systems and microcontrollers (FPGAs, PICs, AVRs). Get help with hardware issues and embedded programming.

Reply   Post New Thread
Thread Tools Display Modes
Old 10-11-2011, 11:49 AM
kishoreinme kishoreinme is offline
New Member
Join Date: Oct 2011
Posts: 2
Default AT command CHLD=3 on SIMCOM508 modem to make multiparty call returns ERROR.


I have a SIMCOM508 modem connected to minicom on ubuntu.
Iam able to make calls, add, hold, wait, swap and sms except multiparty conference call.

I have followed the steps in
to try this

The final AT+CHLD=3 returns just an ERROR from the modem.

is there any sequence to be followed doing this?
could someone help out?
Reply With Quote
Old 10-11-2011, 01:47 PM
kubeek's Avatar
kubeek kubeek is offline
Senior Member
Join Date: Sep 2005
Location: Prague, Czech Rep
Posts: 3,485

Are you should it works in a standard phone with your simcard? The feature could be disabled at the provider.
Reply With Quote
Old 10-12-2011, 05:36 AM
kishoreinme kishoreinme is offline
New Member
Join Date: Oct 2011
Posts: 2

Dear Kubeek

Thanks for the pointer. checked it. the operator support was disabled. the problem solved.

Reply With Quote
Reply   Post New Thread

, , , , , , ,

Related Site Pages
Section Title
Textbook Asynchronous counters : Sequential Circuits Counters

Similar Threads
Thread Thread Starter Forum Replies Last Post
PIC16F84A Servo Driver Troubles solpic Embedded Systems and Microcontrollers 6 09-15-2009 10:06 PM
LCD AND KEYPAD PROJECT gadress General Electronics Chat 9 06-13-2009 08:53 AM
DESIGN PROJECT STUCKED gadress The Projects Forum 3 04-29-2009 07:06 PM
How to jump back to an original state? - PIC programming draeberg Embedded Systems and Microcontrollers 7 05-05-2008 05:09 PM
Combination Lock using PIC 16f628 draeberg Embedded Systems and Microcontrollers 5 04-25-2008 04:18 AM

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 02:02 PM.

User-posted content, unless source quoted, is licensed under a Creative Commons Public Domain License.
Powered by vBulletin
Copyright ©2000 - 2014, vBulletin Solutions, Inc.