AT Command Drop UMTS

is there a way to generate a drop during a call through the AT commands?
is there also an AT command that say you if the call failed or dropped?

I currently use the ec25 modem.
Thanks in advance for the reply.


AT+COPS? //See the reference manual for details.
AT^DSCI=1 //Configure before your voice call

but to cause a drop can I do it with the AT commanders or do I have to cause it by unscrewing the antenna or degrading the RSCP?
My aim was to call a number and then after X seconds cause a drop and try to call the number again.
I don’t know if it can be done.
I wanted to simulate this network event