M1 - Mobile Voip app for iPhone and iPad

M1 - Mobile Voip is a SIP-based softphone with excellent voice and video call quality. It could be used as an extension phone when it is connected to an IP-PBX, Softswitch or IMS.
Notice:
- To use M1 - Mobile Voip, you need to get a SIP account from SIP provider first and get Operator Code from our support.

Features:
- Auto sync local contacts
- Call History
- Voice call
- Voice Codec: G729, PCMU and PCMA
- Mute, Speaker, DTMF, Call Wait, Voice exchange.
- Echo cancellation, VAD (Voice Activity Detection)
- QoS: help improve Voice Call Quality
- Supports UDP - RC4 Encryption standards for VOS3000 Softswitch
- Available over 3G, 4G and Wi-Fi