AL5068S Designer’s Guide
No. AL5068S-E00-105
Altec Electronic AG
Seite 23 / 25
6. SOCKET MODEM APPROVALS
The Socket Modem module is approved as a host-independent modem card. To maintain
type approvals, permits and/or licenses valid, the guidelines described in this document must
be followed.
6.1 Considerations for Telecom Approvals
The Socket Modem has been assessed and has been found to comply with the relevant
harmonized standards as defined by the European ETSI Directive (ETSI TC-TE).
These standards are:
TBR3 / CTR3
6.1.1 ISDN Connection
The Socket Modem can be connected to the S0 Bus of the ISDN Telephone Network either
a)
by using a 4-wire flying cable to connect pins 1 to 4 of the module to an RJ-45
connector which can be assembled in a suitable location of the host system enclosure,
OR
b)
by providing traces on the host system motherboard for the ISDN connection signals
between
the card and an RJ-45 connector
If connection option a) is used, the cable and its installation inside the host system must be
in accordance with the guidelines in IEC950/EN60950 (e.g. the insulation material must
withstand electric strength tests as described in section 3.4).
If connection option b) is used, NO additional components must be connected to the S0-Bus
signals. Other components not intended for use with this design may affect the network
access characteristics of the modem and may therefore invalidate the type approvals,
permits and/or licences. In both cases, for the connection between the host and the PSTN
wall connector, a cable with RJ-45 modular jack and an appropriate national plug must be
used.
6.2 Considerations for Electrical Safety
6.2.1 Conditions for Maintaining Safety Compliance.
The Socket Modem has been assessed with respect to electrical safety and has been found
to comply with relevant standards as defined by the European Low Voltage Directive
(72/23EEC). The particular standard is
EN 60950-1:2001
.
The card is rated as Class III equipment and it is intended for use in Pollution Degree 2
environments only [see EN60950-1:2001, 2.10.4]. Material Group IIIa or IIIb (Comparative
Tracking Index below 400 according o IEC 112, method A) is assumed for any host system
PCB that has traces and/or circuitry with TNV potential.
It is assumed that the modem card will only be assembled in a host system unit that
complies with IEC60950/EN60950. Some particular requirements are [see EN60950-1:2001,
2.1.1, 2.2, 2.3, 2.9, 2.10 and 4.7.3.2]:
6.2.2 Power Supply [EN60950-1:2001, 1.6]
Before installing the Socket Modem in a host system, the installer must ensure that the
power drawn by the card, together with the host and any auxiliary cards drawing power from
the host, is within the rating of the host power supply unit.
The Socket Modem's power consumption is typically 0.15 W (@ 5.0 Vdc).
