Many IP telephones, although presumably very functional, are very expensive; what suggestions or alternatives are there?
In many cases the prices of IP telephones will continue to fall. Lower cost SIP endpoints are making an impact into the market as well. It is also possible to use a soft-phone which could provide all of the standard desktop phone capabilities on your personal computer, and forgo the need for an IP telephone, for a fraction of the cost. Additionally, lower cost TDM phones can be used on converged systems for applications that do not require IP technology.