ATH PROBLEM

IoT Modules Legacy HL Series
1

HI,

hi have a problem with the ATH commands, during MO is alerting i cannot make an ATH commands, this is no effect on hang up.
ATD+33661879269;
*PSCSC: 1, 0, “+33661879269”, 145, 0,

OK

*PSCSC: 1, 3,

*PSCSC: 1, 4, MO call alert at distant
ATHATHATHATH no effect
*PSCSC: 1, 5, 0, distant pick up but hilo hang up because ATH will send before

*PSCSC: 1, 21,

OK return commands ATH before.

It’s strange ATH no effect during distant ringing.

2

It looks some setting (for example, the +CVHU setting) has made ATH to be ignored.

We have 2 suggestions.

  1. Please reset the setting by ATZ and try again.
  2. If ATH doesn’t work, please also try AT+CHUP.

Thanks

3

i have tested your solutions, but there is no effect, i seem it’s a probleme of modem.

4

Hiya,

Just a thought - would sending the ‘+++’ sequence (with the appropriate [1 sec] guard time before and after) before sending the ATH work?

ciao, Dave

5

i have tested your solution, but no effect , i have find a system, i send just ATD :smiley:, and during distant ringing the modem hang up.
Strange :frowning: :frowning: i prefer using ATH