This week’s featured Cisco Press book is IP Telephony Using CallManager Express Lab Portfolio by Cheryl Schmidt and Ernie Friend. We have a free chapter from the book, Chapter 4: Dial Plans and Dial ...

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

The new Cisco CallManager Express, a scaled-down version of Cisco's CallManager call processing software for larger enterprise customers, focuses on features most attractive to offices with fewer than ...

We have a CUCM 8.5 cluster here, and a CME in China. When we make a call from China to here, and the call goes to voicemail, the voicemail servers see the source IP as one of the Callmanagers in the ...