Case Study: EarthLink achieves faster, scalable call handling with Contus’s SIP stack softphone solution

EarthLink cuts call setup time by 5x with Contus

EarthLink, Iraq's largest ISP, faced challenges with call delays, manual dialing errors, and an inability to scale its call center to handle high volumes. The company partnered with vendor Contus to develop a powerful SIP stack-based softphone application to overcome these pain points and achieve secure, high-quality communication.

Contus implemented a custom-built SIP stack, bypassing WebRTC for direct server integration, and leveraged the Linphone SDK for clear audio. The solution included a pre-configured dialer for instant connections and was scaled using Asterisk Server integration. As a result, EarthLink's call center now handles over 100,000 calls daily with zero lag, achieved an 80% faster call handling rate, and saw a 5x reduction in call setup time.

EarthLink