A1 dialer is a mobile application in Android platform for making VoIP calls.
A1 mobile dialer is a mobile application for making VoIP calls. It works based on SIP protocol and requires data service of GPRS/3G/4G or WiFi data connection.
Features:
1. VoIP incoming and outgoing call
2. Support full functional pin to pin (SIP to SIP) call
3. Can bypass any Firewall
4. Low bandwidth consumption by customized byte saver solution
5. Smart echo cancellation technique
6. Derail call log of incoming and outgoing calls
7. DTMF support
8. PLC (Packet Loss Concealment) and VAD (Voice Activity Detection) implemented
9. Alert system by local Inbox message or pop-up message