15.6 Alarm Interface
Two wire interface via RJ11 socket
40V feed at 12mA
Ringing voltage 40V P-P to REN4 for incoming voice calls
Off hook detection with dial-tone presented to alarm dialler
DTMF tone recognition for dialling outgoing calls and alarm signalling
Tone generation for alarm handshake and “kissoff” tones
Interface fault detection and reporting within 6s (providing sense resistor fitted as
specified in Installation section)
15.7 Ethernet Interface
10Mbps and 100Mbps (10/100BaseT) with auto-negotiation
UTP with standard RJ45 socket for CAT-5 cabling
Auto-sensing of Ethernet 802.2, DIX and SNAP formats
ARP (Address Resolution Protocol) support
Dynamic IP addressing (DHCP)
15.8 ISDN Interface
Basic Rate 2B+D, Q.921, Q.931
‘S’ bus compatible
Conforms to European ETSI standard TBR 3
RJ45 socket with cable provided
Point-Point and Point-Multipoint operation
Multiple Subscriber Numbering support
Data calls using V.120 rate adaption
Data calls using PPP asynchronous to synchronous conversion
15.9 PSTN Interface
Two wire interface via RJ11 socket
Conforms to European ETSI standard TBR 21
Operates at REN 1
Typical line current drawn
Version 1.5 16/10/06
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