The app makes VoIP calls using the SIP protocol and supports all codecs. It integrates with the mobile phonebook and runs behind NAT or private IP addresses.
The app allows users to make and receive audio and video calls from IP intercom stations on their iPhone or iPad. It works with the Castel Cloud SIP server through Wi-Fi and 3G/4G/5G networks.
Add profile photos to contacts in iOS phone book. Import images from VKontakte. Display photos in contact cards. Enhance contact recognition with visual cues. Sync photos with existing contact entries.
Translate conversations in real time with 90%+ accuracy and minimal delay. Make unlimited HD video and audio calls worldwide. Share screens or text chat without ads or subscriptions. Connect with contacts or clients for extended communication.
