The modern way of communication not only internally but also externally ( partners & customers) is via IP Telephony (IPT). IP telephony lets you have the freedom to communicate effectively with your staff, partners, and customers at a lesser cost than a traditional phone system.
Easier, faster and more flexible deployment. To get legacy telephony services a business is forced to deploy cabling, which costs money and time and is fixed to 1 line (analogue) or max 30-24 (digital). While with IP Telephony businesses can grow as you like and at your pace
IPTP Networks is offering call control devices which not only allow IP telephony but also keep legacy telephone systems (analogue, digital)
You can also integrate your IP Telephony with TelePresence technology to get not only the phone but also video calls