Why Enterprises should plan to make a smooth move to IP Telephony??

The reason why enterprises should plan to make a smooth move to IP Telephony is the advantage it offers in terms of integrating different application with communication infrastructure, which will help improve business process.Whether to go for IP or not is tricky, as some enterprises would have made investment in the telephony segment already.
It is entirely possible to integrate a new VOIP network into an old telecoms system ; for example, if budget is limited or if there is preservation order on an old building,preventing major work on the structure.Larger organization will often address the move to IP on a site by site basis;sites that have not yet been converted to IP telephony can continue to reuse older system that are integrated via Gateway.
Appropriate telephony engineering can provided near seamless calling between the old and new system and can even add new service to legacy system such as IP, conferencing, or unified messaging.Some organization may even chose to provide the new system only to workers who can benefit the most from new capabilities such as multimedia calling and instant messaging.
A 100% IP deployment would surely make their lives easier and simpler, giving managers the freedom for more active management along with giving user the reach to larger application than a hybrid system.Interoperability with other telephony infrastructure is important for integrating all business communication into a seamless and unified experience for customer.