LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
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Registry information such as registrar, SIP proxy or realm (the naming of
these parameters can vary from device to device):
Here you enter the internal VoIP domain of the LANCOM Business-
VoIP-Router (default: 'internal') if the ATA is to retrieve this
information from the LANCOM Business-VoIP-Router operating as
DHCP and DNS server.
Otherwise you should enter the local IP address of the LANCOM
Business-VoIP-Router.
If you connect a fax machine, select the fax transmission method as
desired or as supported by the ATA.
Where fax signals are to be transmitted like voice data over a VoIP
connection, this is referred to as "fax over VoIP". Fax transmission
requires the use of the compression codec G.711. Accordingly, set this
codec in you ATA.
As an alternative, fax messages can be transmitted using the T.38
standard, meaning that they are not transmitted as voice signals via
VoIP, but rather with a special protocol known as the IFP (Internet
Facsimilé Protocol). If your ATA supports this method, set fax
transmission to T.38 ("Fax over IP" or FoIP).
Further information about faxing with T.38 is available in the LCOS
reference manual.
Now you have found out a great deal about setting up a LANCOM Business-
VoIP-Router as a PBX in combination with a variety of different terminal
equipment.
The following chapters inform you about how you can set up and operate the
PBX functions available with this high-performance installation.
