Fax Server ISDN manual ©-Vidicode 2006
18
Several models
There are two models of ISDN Fax Servers. This has to do with the different
ISDN line types that exist. The types are primary rate (PRI) and basic rate
(BRI).
The interface to the network is called E1 for primary rate and S0 for basic
rate.
Basic rate lines carry 2 telephone channels. Primary rate lines can carry a
variable number of channels that the user has subscribed to with a maximum
of 30.
The models for basic rate and for primary rate are different because of the
interface to the telephone network.
The model for primary rate can send and receive on up to 16 channels
simultaneously. It has only one line port.
The model for basic rate is available for 2 lines and 4 lines and can work on
4 or 8 channels simultaneously.
Identical operation
The differences between the Fax Servers for basic rate and for primary rate
are only small. In this manual they are treated as one product and
differences, if they exist, are mentioned only when needed.
