I'm looking for a tech who already has completed a Ringless Voicemail drop system.
We are US based company and will target users in US only so will calling 10-digit US phone numbers.
We would ideally prefer some open source technologies to be used with it like FreeSwitch etc..
If you Already have completed a ringless voicemail drop system please bid. Please
include the past project info.
Asterisk PBX, Telecommunications Engineering, VoIP