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Chapter 1
Introduction to the OfficeServ100
Size and Configuration
The OfficeServ 100 comprises a Basic Key Service Unit (KSU,
net, interface cards and electronic keysets. The simplest KSU has eight (8) keyset ports, but
this is expandable to 18 analogue C.O. line ports, or 24 BRI lines, or 32 stations. In addition,
up to eight keyset daughterboards may be added to the system along with the optional 2SLI
card.
Two types of Expansion cabinet are available: Expansion A and Expansion B. Expansion A
has three universal slots and one dedicated slot for a TEPRI or Voice Mail card. This pro-
vides the maximum configuration of 66 ports with analogue trunk lines or 96 ports with digital
trunk lines. Expansion B has two universal slots and two dedicated slots: the first dedicated
slot is for a Voice Mail card; the second dedicated slot supports a TEPRI card. This provides
the maximum configuration of 66 ports with analogue trunk lines or 96 ports with digital trunk
lines.
The system also has an optional MISC card which provides Music-On-Hold, external paging
and other useful facilities.
NOTE: For a full description of each card discussed in this section, refer to
The charts shown in
describe possible configurations using the Basic
KSU, Expansion Cabinet and interface cards. However, by using the system’s unique keyset
daughterboards (KDBs), which are installed in the base of a digital keyset, the capacity of the
system can be increased by one station per KDB. Installing a KDB-DLI adds another digital
port while a KDB-SLI adds a single line port. You can mix and match these two types of KDB
to get up to a total of eight KDBs in the system. Using this method allows the system to ex-
pand to a maximum of 64 stations. Adding the optional 2SLI card to the KSU provides a fur-
ther two SLI ports. The combination of the Basic KSU plus three expansion cards in the KSU,
plus three expansion cards and one TEPRI card in the Expansion A cabinet, plus eight
KDBs, plus a 2SLI card provides a maximum configuration of 96 ports plus a MISC card.
Important Points to Remember:
Only one 2SLI card can be installed in the system.
Only one MISC card can be installed in the system.
Only three expansion cards can be installed in the KSU.
An additional three expansion cards and a card such as a TEPRI or SVMi-8 card can be
installed in an Expansion A cabinet; OR an additional two expansion cards and a TEPRI
and Voice Mail card can be installed in an Expansion B cabinet.
A PLL card is required if ISDN cards (TEPRI, BRI) are installed
Only eight KDBs can be installed in the keysets connected to the Basic KSU.
The system can have up to 48 digital keysets, but this is reduced to up to 40 digital key-
sets if an SVMi-8 card or MGI3 card is installed.
The number of stations allowed is reduced by four for each WBS24 installed (up to 16 if
the 4WLI card supports the maximum four base stations).
Large LCD keysets consume three times as much power as other stations.
