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4.
DATA FACILITIES
A data terminal connected to a line circuit (terminal connected via modem to ALC or terminal
connected via SOPHO-SET, SOPHO-LAM or LAM to DLC) is regarded by the ISPBX as a
normal extension. It does not distinguish between a data party and a voice party. ISPBX
facilities are available for both types voice and data extensions. Some facilities however are not
very useful for data parties.
In this chapter the facilities that are useful for data parties are discussed in more detail.
For a number of facilities the DNR of the extension must have a facility class mark assigned to
it. Often this facility class mark can be directly assigned with the OM-command ASFACM or
erased with the command ERFACM.
In some cases a special command must be used to assign or erase a facility class mark. These
facility class marks are called Read-Only facility class marks as they are not assigned or erased
with ASFACM or ERFACM. The correct OM-commands that must be used to assign the read-
only facility class marks to a DNR are mentioned in the applicable facility description.
With the OM-command DIFACM all facility class marks that are assigned to a DNR can be
displayed.
In a number of cases the extension user has to activate a facility by dialling a certain prefix from
the extension (data terminal). In the facility description, the OM-command that must be used
to assign the prefix in the correct analysis tree is mentioned. In this description a general
knowledge of the ISPBX number analysis (analysis trees, analysis groups etc.) is assumed. For
more information: see Facility Implementation Manual; Management.
With the OM-command MAKENU a prefix can be erased from an analysis tree. With the OM-
command DINASD the number assigned in an analysis tree can be displayed.
4.1.
ABBREVIATED DIALLING
The abbreviated dialling facilities offered for voice calls are also available for data calls, see
Facility Implementation Manual, Voice Facilities.
4.2.
AUTOMATIC ANSWER
A data terminal adaptor (SOPHO-SET, SOPHO-LAM or LAM) can be set to automatic
answering. This is particularly useful for an unmanned data terminal or a data terminal with
limited user control (such as a printer). This automatic answering option can be programmed
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