how to disconnect a data call

hi,

I’m able to connect 2 of my q24plus modules using data call from hyperterminal.
But i dont how to disconnect data call.
Any help would be appreciated.
Thanks in advance.

Hari.

Too basic question. “AT command interface guide” is the right place for searching answer.
Note “+++ ATH” sequence for software call release or AT&D mode for hardware release by DTR.