ABTO Software VoIP SIP SDK provides a solution to quickly build VoIP softphone that can dial and receive calls on your computer or add VoIP features into your software.

Quick facts about VoIP SIP SDK for iPhone:

iOS 5 compatible
Support of SIP and RTP
STUN and other IETF standards (compatible with SER, OpenSER and Asterisk)
SIP Registrar (SIP server) support
Voice and video calls
Status messages

Available codecs:

G.711-ALaw
G.711-muLaw
G.729
Speex
Theora
GSM
H.263
H.263+
H.264

Скачать ABTO Software VoIP SIP SDK for iPhone бесплатно на странице загрузки.