Is a 10 Mb network suitable for IP Feature Phones?
Probably not. For one thing, you must be conservative when evaluating a network for initial installation of an IP Phone system, because the customer is likely to add IP Phones, computers and other network devices in the future. And, that aside, only a few IP Phones can be properly supported on a 10 Mb network. Unless the network traffic is very limited, a 10 Mb network will probably not support an IP Phone system. Plan on upgrading a 10 Mb network unless there is a small number of users (fewer than 10) and no plans (and/or expectations) for growth.