If you have the responsibility to design, upgrade and manage data networks to carry IP Telephony (voice, video and data); need help in evaluating competing IP-Centrex and IP-PBX systems; or need guidance in specifying the parameters for a service level agreement for IP-Centrex, this unique reference provides you with the knowledge you need to get the job done right. It enables you to more accurately estimate the time and resources needed to implement IP Telephony in your organization. The book describes the IP-Centrex option of having the telephone company take responsibility for the service delivery and offers the kind of information service providers need to improve marketing and sales campaigns for IP-Centrex services.20 users ~ 100 users ~ 500 users ~ 1, 000 users Survivable multinode system ( the HiPath 3750). ... In association with its HiPath systems, Siemens introduced a range of optiPoint 500 phones, replacing the optiPoint 300 sets, which hadanbsp;...
|Title||:||Centrex Or PBX|
|Author||:||John R. Abrahams, Mauro Lollo|
|Publisher||:||Artech House - 2003-01-01|