LANCOM 1722 VoIP – LANCOM 1724 VoIP
Chapter 5: Configuring Voice over IP
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5.2.1
VoIP telephony for stand- alone use
This example shows how to configure a LANCOM which is used as a central
device for Internet connectivity and VoIP telephony at a new site.
Target
Internal telephony with SIP telephones and SIP softphones.
Access to internal terminal equipment via the MSNs.
External telephony via the SIP provider with backup over ISDN.
Calls to emergency and special numbers via ISDN.
Requirements
LANCOM connected to the LAN and WAN, an ISDN TE interface is linked
to the ISDN NTBA. The Internet connection has been set up.
A telephone number plan with a unique internal telephone number for all
terminal equipment to be connected, here, for example, the number '11'
for the VoIP softphone and the number '12' for the VoIP telephone.
A SIP provider account.
Using the information during configuration
The following table provides a summary of the information required for con-
figuration and where it can be entered. SIP terminal equipment parameters
SIP provider with the follow-
ing account information
Domain: sipprovider.com
Telephone number: 0123-
456 789
Internet
ISDN
PCs in the LAN
LANCOM
ISDN
ADSL
LAN
VoIP telephone
Internal number '12'
VoIP softphone
Internal number '11'
ISDN connection
MSN 1: 0123-555 555 1
MSN 2: 0123-555 555 2
