Acer ISDN 128 Surf USB Bedienungsanleitung PDF herunterladen (Seite 27)

6.4 Part of local interconnected ISDN phones

At least two cards are required to interconnect internal telephones with external telephone

lines. In order to connect telephones directly to an ISDN card, it must support NT-Mode. Then

it is possible to use it as internal ISDN port. There currently there are these types of chip sets,

that support NT-Mode hardware layer:

• HFC-S PCI based cards

• HFC-4s / HFC-8s chip sets

• HFC-E1

Tab. 17 -Cards do have the required chip set capable of NT-Mode

6.5 Example of configuration Asterisk PBX in small network with SIP klients and

ISDN connection to ISDN network

In build of PBX i used a network equipment available in Lab of Signal processing on

faculty of electrical engineering (FER) in Zagreb. The solution come out from figure 3 in the

chapter 4. The core of PBX is a Linux machine (for detail see sub-chapter 6.1.1) with name

tonka.zesoi.fer.hr connected to LAN via 100 Mbit Ethernet adapter. Connection into ISDN

network is possible through ISDN card.

NT-Mode ISDN cards

Creatix ISDN-S0/PCI

Trust PCI-Modem

Acer ISDN 128 Surf PCI

Billion/Asuscom (Asuscom/Askey)

HFC cards from “Conrad Elektronik” (not available anymore)

D-Link DMI-128I+

Neolec FREEWAY ISDN

PCI

ISDN 128Kbs TA Card (TAS106H)

Junghanns Asterisk boards (HFC-4S / 8S / E1)

PBX4Linux boards (HFC-4S / 8S / E1)

Scitel cards

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Acer ISDN 128 Surf USB Bedienungsanleitung Seite 27