Use Türk Telekom ISDN service for folder transfer, visual communication (Videofon) and PC communication in your firm.
ISDN, which stands for the initials of Integrated Services Digital Network, is a digital network that provides transfer of voice, text, image or data from one terminal to other by being converted to a standard adaptable digital signal.
ISDN service is given in two different ways as PA and BA.
Two data channels (B channel), which has 64 kbit/sec speed and in order that the signalling information to be identified, signalling channel (D channel), which has 16 kbit/sec speed, were put into service over 2-wire-lines. In addition to that, it is possible to perform package mode data transfer (9.6 kbit/sec.) over D channel.
By means of primary rate access, ISDN, PABX and LAN users have the opportunity of using 30 B channels 64 kbit/sec each and a 64 kbit/sec D channel services at the same time.
