Chapter 11 Adding Interface Cards To The System; Adding Interface Cards; Grading The Officeserv500 For Dtmf Receivers - Samsung OfficeServ500 Installation Manual

Chapter 11 Adding Interface Cards
This chapter describes how to add interface cards to your OfficeServ500 system when you have
finished installation and already begun operating. It also explains how to calculate the number of
DTMF receivers your system requires (the system "grading") to operate correctly.

Adding Interface Cards

While it is possible to insert and remove cards with the system switched on, it is recommended
that the system be switched off whenever possible before inserting or removing cards.
1. Remove the covers of the system cabinets in order to locate a suitable empty card slot. Hav-
ing located a slot, insert the new card and push firmly in the middle of both card ejectors to
ensure that it is fully inserted into the backplane connector.
2. After inserting the new card(s), you must tell the system to recognize the new card(s). This is
done using MMC 806 (Card Pre-Install) for each new card that is installed.
3. The new card(s) must be assigned directory numbers according to the system numbering
plan in MMC 724. Make a note of the software port assignments of the new cards so the ports
can be assigned the correct numbers. These software port assignments are shown in
11-1.

Grading the OfficeServ500 for DTMF Receivers

Digital Signal Processors (DSPs) are used in the system as DTMF receivers. Different system
traffic patterns may affect the availability of common resource DSPs. Calculating or "grading"
these DSPs is required to ensure adequate system performance. There are four DSPs on each
cabinet, and 12 on each MFM and SCM daughterboard. These common resource DSPs are
shared and any card requiring a receiver will be able to make use of them. After a DSP receives
the expected number of digits, it is released and then assigned to the next call.
The following devices require DSP resources to receive DTMF digits: Analogue AC15, DISA
trunks, 8 SLI, 8MWSLI, KDB-SLI, 16 SLI, and 16 MWSLI.
to the System
11-1
Figure