ISDN connection timing

To ensure trouble-free transmission, all of the components in the ISDN system (LANCOM VoIP routers, upstream and downstream ISDN PBXs and ISDN terminal devices) have to use the same ISDN timing. In the LANCOM VoIP router, an ISDN interface in TE mode can take on the timing of the ISDN line. The TE interface enables the device itself to behave like a terminal device. In NT mode, the LANCOM VoIP router can pass on the on this timing over the ISDN interfaces to any connected terminal equipment or downstream ISDN PBXs. The NT interface enables the device itself to behave like an exchange.

A number of ISDN interface settings are available for specifying the ISDN interface which is to supply the ISDN timing to the LANCOM VoIP router, which in turn passes on the timing to the devices at the NT interfaces.

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