Lancom LC-1823 Manuals
Also see for 1722 VOIP: User manualUser manual
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Contents
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LANCOM VoIP Routers: PBX Functionalities Chapter 6: Extended functions45EN The procedure of call forwarding at the exchange is not visible at theLANCOM Business-VoIP-Router—consequently the forwarding ofcalls is not displayed in LANmonitor.6.2 Life-line support for ISDN telephonesLife-line support allows LANCOM Business-VoIP-Routers to continue toprovide telephony to any connected ISDN telephones, even if the LANCOMdevice is unconfigured and/or in case of power outage. To ensure that thisfunction works, the telephone numbers are mapped twice between the ISDNNTBA and the terminal equipment. At the transition from the ISDN NTBA to the LANCOM Business-VoIP-Router, the ISDN mapping table for the ISDN line defines the translationbetween external MSNs from the ISDN network and internal telephonenumbers. For example, an incoming call for the MSN '0123456789' isconverted into the internal telephone number '11'. At the transition from the LANCOM Business-VoIP-Router to the ISDNtelephone, the ISDN user table defines the translation between theinternal telephone number and the internal MSN. The incoming calldirected to '11' is converted back into '0123456789'. For this reason, theISDN telephone needs this "MSN" programmed into it as its internal MSNin order for it to react to this telephone number. If the LANCOM Business-VoIP-Router is not available as a telephoneexchange (device is unconfigured or there is a power outage) then the theISDN interfaces provide a "bridge" between the internal devices and theexternal connection. A requirement for this function is the correct configuration of the ISDNinterfaces and of the DIP switches on the underside of the device—these are the standard ex-factory settings.ISDNusersISDNmappingMSN<->Int. tel.MSN:0123456789MSN:0123456789Int. tel. no.<->MSN01234567890123456789 11 |
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