LANCOM 1722 VoIP – LANCOM 1724 VoIP
Chapter 2: Installation
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Ready for operation?
– After a brief self-test, the power LED lights up
continuously. Green LAN LEDs show which LAN connectors are being used
for a connection.
These example connections work only with the ISDN interfaces con-
figured according to their factory settings!
Devices with integrated ADSL modems can become very warm during
operation. For these models, environmental temperatures are not to
exceed 35°C. Sufficient ventilation is of vital importance. Do not stack
the devices and do not expose them to direct sunlight.
2.5
ISDN interface configuration
Routers of the type LANCOM 1722 VoIP and LANCOM 1724 VoIP feature sev-
eral ISDN interfaces with which they can be connected to ISDN exchange
lines, or with which ISDN terminal equipment can be connected to them.
ISDN TE interface ("external ISDN connection"): An ISDN interface in TE
mode for connection to the ISDN bus of an upstream ISDN PBX or to an
ISDN NTBA. This ISDN interface can be used for backup connections over
ISDN or as a dial-in interface for remote stations.
ISDN NT interface ("internal ISDN connection"): With its ISDN interface in
NT mode, the LANCOM VoIP Router itself provides an internal ISDN bus.
This ISDN interface can be used to connect ISDN PBXs or ISDN telephones.
Configuration PC with
serial interface
ISDN (NTBA)
LAN
Splitter
Telephone socket
Modem Adapter Kit with
external modem
ISDN terminal device
VoIP telephone
