Hi
I can help you with this task, I will setup pitch shift module for your. and will provide you dialplan to allow control pitch using dtmf keys.
-
I have 13 year experience with CTI (Computer Telephony Integration) and software development and have solid experience with telecommunication related technologies, protocols and applications for example Asterisk, OpenSIPs, Freeswitch, FreePBX SIP, SMPP, IAX, WebRTC etc ... for details please visit my profile.
Regards