Castel SIP!

Castel SIP App is a SIP intercom softphone. The easy-to-use and intuitive application, allows you to make and receive audio and video calls from IP intercom stations (XELLIP, CAPIP) on your iPhone or iPad. It works with a Castel SIP server (locally or hosted by Castel) through Wi-Fi and 3G/4G.Main features:- Audio with the following codecs: G711 (ulaw,alaw), GSM, G722- Video with the following codecs: H264, VP8, mpeg4- Multi calls (swap among active calls, merge calls, transfer calls)- Audio conferencing- Address book integration- Call history (received, missed and dialed calls list)- Echo cancelation- Loudspeaker, mute and hold- Interoperability: can connect to any SIP video phone supporting codecs above- DTMF (telephone tones) support using in-band, SIP INFO and RFC2833Note: Please, check your cellular operators terms of agreement to make sure they allow SIP calls on their network before using Castel SIP App.