(Digital Phone Interface)
Ositech’s Digital Phone Interface (DPI™) technology is the
next step in the evolution of mobile connectivity. With this
exclusive technology, built into Ositech modems, you can make
modem connections through digital (PBX) phone systems found in
offices and hotels worldwide. No longer must you be concerned with
communications blackouts when travelling, or the threat of
high-current digital phone lines damaging your analog PC Card
What does DPI mean to
mobile users like me?
now have a complete connectivity solution! With Ositech’s DPI
technology, you always have access to the information you need
while on the road - send and receive data and faxes, and access
the Internet. Never again will you waste time searching for an
analog phone line or have to return a modem damaged by
high-current digital (PBX) phone systems.
Why do I need a digital
PC Card Modems are analog, that is, modems send data over the
telephone network as a series of tones. The phones in your home
are most likely analog too. Thus, you can connect your modem to
your home telephone. Unlike the phones in your home, the phones in
offices are usually digital (PBX) phones. Companies use PBX
(Private Branch Exchange) phones because many people can use one
incoming phone line.
Digital (PBX) phone systems use a higher current than analog
phones. For this reason, you cannot use your modem with a digital
phone. In fact, connecting your modem to a digital phone, can
damage your modem.
To protect modems from the damaging effects of digital phone
systems, many modems have some form of defence. Like other
high-end modems, Ositech’s modems include Digital Line Protector
- a smart circuit which protects the modem from damage caused by
Yet, even with such protection, standard analog modems still
cannot connect through the digital phone systems found in offices
This is where Ositech’s Digital Phone Interface (DPI) technology
comes in handy. With Ositech’s DPI, you can connect your modem
through the handset of digital phones and make modem connections.