Absolute junk
Can rarely hear incoming calls after answering, voicemail takes ages to connect & is extremely clunky.
Definitely cannot recommend.
Glad to have finally given up with it after several years persevering, hoping it would improve.

Archived App
This is an archived listing of the app previously available on the App Store.This business communication tool offers a feature-rich softphone experience for SIP calls. It provides push notifications for incoming calls, call recording, and seamless integration with native contacts, making it suitable for both new and experienced VoIP users.
1.5
March 26, 2020
Minor Stability Upgrades
No, CallSwitch Lite does not contain advertisements.
CallSwitch Lite is available for iPhone and iPod devices.
Yes, CallSwitch Lite is available for free and does not have in-app purchases.
The latest version, 1.5, was released on March 26, 2020. The app was originally released on March 11, 2017.
CallSwitch Lite supports Opus, G.722, G.711, iLBC, and GSM codecs for excellent sound quality.
Call recording in CallSwitch Lite is only available for SIP calls and will not record calls made from your GSM line.
CallSwitch Lite has an age rating of 4+, making it suitable for a wide range of users.
Yes, CallSwitch Lite only functions in conjunction with a CallSwitch Lite Platform License.