STN UC vs Castel SIP Usage & Stats
STN-UC is a SIP-based softphone for iPhone that uses Wi-Fi or 4G/LTE connection to make and receive calls and Instant Messages.
Interworking with PortSIP PBX, STN-UC support push notification, which allows it receive calls and messages even it was force terminated.
- Apple App Store
- Free
- Social Networking
Store Rank
- -
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.
With Castel SIP App, you can communicate and open the door, anywhere.
It works with the Castel Cloud SIP server through Wi-Fi and 3G/4G/5G.
Main features:
- Audio and video calls with advanced functionalities (Loudspeaker, transfer calls, hold...)
- Address book with favorites
- Call history
- Remote commands during calls and DTMF
- Support landscape and portrait mode for all smartphone and tablet designs (camera notch...)
Note: Please, check your cellular operator's terms of agreement to make sure they allow SIP calls on their network before using Castel SIP App.
- Apple App Store
- Free
- Social Networking
Store Rank
- -
STN UC VS. 
Castel SIPJanuary 6, 2025