UNIVERGE ST500

UNIVERGE ST500 Softphone for Android

In today’s fast-paced business environment, mobility is key. The UNIVERGE ST500 softphone by NEC empowers you to make and receive calls seamlessly from your Android smartphone, whether you're in the office connected via Wi-Fi or on the go using mobile data (3G/4G). This flexibility helps reduce mobile call costs while keeping you connected as if you were at your desk.

By deploying the ST500, companies can cut expenses associated with call-forwarding from desk phones to mobiles. Employees enjoy free internal calls and affordable local calls directly through the app, minimizing reliance on personal mobile plans. Using a single desk phone number ensures you’re always reachable, with one unified call history and voicemail for easy management.

Application Features:

- Integration with Android contacts

- Call history grouped by contact (missed, incoming, outgoing)

- Custom star code dial panel for quick dialing

- Hands-free mode and Bluetooth headset support

- Video call capability (H.264/AVC)

- Voice codecs: Opus, G.722.1, G.711A/μlaw, G.722, G.729a

- Dial plan customization

Call Features:

- Security via TLS and SRTP encryption

- Call handling: make/answer, waiting, hold/retrieve, transfer, park

- Station hunt groups and call pickup

- DTMF dialing (RFC 2833/in-band)

- Call forward options (all, busy, no answer)

- Voicemail access with message waiting indicator

Note: A VPN connection or Session Border Controller is required for use outside corporate Wi-Fi.

The ST500 is free to use on NEC phone systems (SL2100, SV9100, SV9300, or SV9500) but requires an activation code from an NEC representative. Ensure your system has spare license capacity for a standard SIP extension.