AltiGen MAXCS 7.0 Update 1 Telephony Hardware - Manual (Page 22)

UL Regulatory Safety Requirements
16 Telephony Hardware Manual
Host Computer
1. Model AltiGen/MAX Communication Server apparatus is approved for connection to
Telecommunications Systems specified in these instructions for use subject to the
conditions set out in them. Any other usage will INVALIDATE this approval.
2. The host machine shall be “CE” marked, with the internal ISA and PCI slots operating
at SELV in accordance with EN60950, 1992, issue 2, +A4.
3. This apparatus MUST be professionally installed.
4. The host machine MUST be hardwired earthed in accordance with EN60950, 1992,
issue 2, +A4, 1997, cl. 6.2.1.2 with an earth wire from the host machine earthing
terminal to the building earth.
5. The host machine SELV circuit is connected to the protective earthing terminal in
accordance with EN60950 cl. 2.5.
6. The host machine ISA bus pins B1, B10, or B31 (edge connectors on CPU mother-
board/backplane) MUST be less than 0.1 Ohms to host machine earthing terminal.
ISA bus ISA bus
B1 B10 B31
7. AltiGen complies with PCI Board specifications Rev. 2.1 (5V 32-bit).
8. The power required by the host machine and the total of all adapter cards installed
within the host environment, together with any ancillary apparatus, shall not exceed
the power specification of the host machine.
9. It is essential that, when other option cards are introduced that use or generate a
hazardous voltage, the minimum creepages and clearances specified in the following
table are maintained. A hazardous voltage is one that exceeds 42.4V peak AC or 60V
DC. If you have any doubt, seek advice from a competent engineer before installing
other adapters into the host machine.
Clearance (mm) Creepage (mm)
Voltage used or
generated by host
or other cards
2.0 2.4 (3.8) Up to 50 Vrms or Vdc
2.6 3.0 (4.8) Up to 125 Vrms or Vdc
4.0 5.0A (8.0) Up to 250 Vrms or Vdc
4.0 6.4 (10.0) Up to 300 Vrms or Vdc
For a host or other expansion card fitted in the host, using or generating voltages
greater than 300V (rms or dc), advice from a competent safety engineer must be
obtained before installation of the relevant equipment.
Any other usage will INVALIDATE the approval of the apparatus, if as a result, it
then ceases to conform to the standards against which approval was granted.
10. For the following AltiServ platforms — AltiServ1A-IP, AltiServ1E-IP, and Alti-Office
1B — make sure the input voltage selection switch (115/230V) is on the back of the
chassis and is set to the proper voltage for your installation.