Oncall softphone is a Sip-based softphone for Iphone that uses Wifi or 4G/LTE connection to make call and receive calls and Instant Messages.

Interworking with Oncall System, Oncall Softphone support push notification, which allows it receive calls and messages even it was force terminated.

By using Phone’s existing contact list, Oncall softphone facilitates easy and effective communication multiple calls.

Call functionality includes the ability to switch between two calls, merge and split calls and perform attended and unattended transfers, It also support video conference which needs MCU support.

It supports up to 1080P video call with H264 and VP8 codec, and supports HD audio call.

Codes offered includes : G 729, G 711a/u, Opus, iLBC, GSM,