Cisco has disclosed today a high-severity zero-day vulnerability affecting the latest generation of its IP phones and exposing them to remote code execution and denial of service (DoS) attacks. The ...

Cisco is warning of multiple critical remote code execution zero-days in the web-based management interface of the end-of-life Small Business SPA 300 and SPA 500 series IP phones. The vendor has not ...

Office phones have come a long way in a relatively short time. With the introduction of Internet Protocol phones, new features make those devices more akin to computers than simple phone systems.

This lesson introduces and describes the role, architecture, hardware and software requirements, and the licensing model of the CUCM. Cisco Unified Communications (UC) is an IP-based communications ...

Survivable Remote Site Telephony (SRST) is a Cisco Unified Communications Manager (CUCM) call processing backup mechanism that allows Cisco IP phones to register to a Cisco router. A Cisco router in ...