LANCOM 1722 VoIP – LANCOM 1724 VoIP
Chapter 5: Configuring Voice over IP
88
EN
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, as has the network connection
between both of the locations by means of a VPN tunnel. Any terminal
equipment that is connected can be reached with the IP addresses used.
A telephone number plan with a unique internal telephone number for all
terminal equipment to be connected.
A SIP provider account.
Configuring the LANCOM
The following table provides a summary of the information required for con-
figuration and where it can be entered. Basically, all that is needed is a SIP
PBX line for each location that is correspondingly setup at the remote location
Detailed instructions on configuring the LANCOM:
Under LANconfig, start the setup wizard for configuring the VoIP Call
Manager. Enable the options 'SIP phone system', 'ISDN phone system'
and 'ISDN users'.
LANCOM
Branch office
SIP terminal equip-
ment
Branch office
SIP PBX
Headquarters
Internet VoIP domain
mycompany.BRANCH01
mycompany.HQ
mycompany.HQ
Internal SIP subscriber num-
bers at the branch office
✔
✔
External ISDN telephone
numbers (MSNs)
✔
Country and local area code
✔
SIP PBX line
HQ
SIP PBX domains
mycompany.HQ
SIP PBX registration pass-
word
✔
✔
Call route
Number called '2#'
Destination line
'LOCATION_B'
Destination number '2#'
