Malaki talaga advantage ng mga IP phones compared sa traditional PABX medyo mahal lang ng konti ang initial investment.

But when you are up and running, pwede mo ma enjoy mag
1) Teleconference
2) Control who has access to NDD/DDD
3) Assign groupings (Marketing / Admin / HR / Etc) to avoid busy line
4) Call Transfer
5) Will use the same Local Area Network cabling
6) Nationwide connection using only one trunkline -- nagkamali ako dati dial ng local na connect ako sa Visayas branch wala ako naintindihan sa greetings