IP Telephony

IPTSP is the most advanced telephony service, with all of the features of other phone services such as GSM, CDMA, BTCL, and PSTN. IP Phone, in addition to standard phone service, allows subscribers to send and receive video while conversing. A subscriber to an IP Phone can make and receive calls to the following operator. The sole difference between an IP Phone and other phone services is that an IP Phone requires prior internet access.