...service. Extra bandwidth may be needed over the wide area. And if the intention is also to migrate voice traffic from traditionalphone wiring to a local area network (Lan) within the sites, existing Lan switches may need replacing as well. So the...
http://www.computerweekly.com/Articles/2002/10/17/190317/voip-still-on-hold.htm
...alternative to a constrained traditionalphone system and underperforming...alternative to a constrained traditionalphone system and underperforming...and more organized than a traditionalphone system. And the advanced...
http://www.findwhitepapers.com/whitepaper982/