we offer PORTA and VSR billing system. mail us today become a Reseller at support@voice-mac.com.We have anti blocked VPN dialer for UAE,Libya,Saudi Arabia,Lebanon and other VOIP blocked countries.
The function is available in some telephone networks and it allows
receiving the other call at the moment of the actual conversation by the method
of setting the active call in the waiting mode or cancellation. This will let
not to miss an important call and to agree upon time when it will be possible
to call back.