New features in Cisco’s CallManager software promise to make the IP PBX platform more secure and interoperable with standards-based VoIP equipment, while adding native support for video phone calls, ...

Cisco’s update to its CallManager IP PBX – introduced this week with native SIP support – will require broader upgrades to other network infrastructure gear ...

Cisco Systems Inc.’s update to its CallManager IP PBX — introduced this week with native Session Initiation Protocol (SIP) support — will require broader ...

Cisco has hit back at allegations that some of its IP telephony equipment is vulnerable to communications interception or denial of service attacks. Last month, penetration outfit SecureTest went ...

Cisco System Inc.’s update to its CallManager IP PBX — introduced this week with native SIP support — will require broader upgrades to other network ...