價格：免費
更新日期：2018-12-28
檔案大小：19.5 MB
目前版本：3.10
版本需求：需要 iOS 7.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
ABTO Software's VoIP SIP softphone.
Can be used to call sip numbers and landline numbers (if sip provider has this option).
Features:
voice calls;
video calls;
text chat (based on SIP MESSAGE request);
works with all popual SIP servers, including Asterisk/FreeSwitch;
make direct calls between clients without SIP server;
allows to use UDP/TCP/TLS protocols for SIP transport;
ability to make secure calls using SRTP/ZRTP;
supports STUN/ICE;
IPv6 support.
支援平台：iPhone, iPad