GlossaryA B C D E F G H I J K L M N O P Q R S T U V W X Y
PON - See passive optical network.
POP - See point of presence.
Postal, Telegraph and Telephone (PTT) - The generic European name usually used to refer to state-owned telephone companies.
POTS - See plain old telephone service.
POTS splitter - A device that uses filters to separate voice from data signals when they are to be carried on the same phone line, required for several types of DSL service.
PRI-ISDN - See primary-rate ISDN.
PTT - See Postal, Telegraph and Telephone. public switched telephone network (PSTN) The worldwide communications network that carries phone calls and data.