LANCOM 1722 VoIP – LANCOM 1724 VoIP
Chapter 5: Configuring Voice over IP
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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
can be entered using the SIP telephone keypad, the corresponding configura-
tion software, or the softphone configuration menu.
Configuring the LANCOM
When configuring the LANCOM, the following steps must be carried out:
Setting up the line to the SIP provider
Enabling the ISDN interface and assigning MSNs to the internal numbers
in the LANCOM VoIP Router
Creating ISDN users
Adapting the call routing table
Detailed instructions on configuring the LANCOM:
Telephone number plans with ISDN PBX systems.
When crossing from the ISDN network to the internal subscribers, the ISDN PBX converts the
external MSNs to internal MSNs. When operating a LANCOM VoIP Router at the extension
interface of the ISDN PBX, there is another conversion of the internal MSNs to the internal
numbers of the VoIP range. For reasons of clarity, we recommend using congruent internal
MSNs/numbers for terminal equipment for all connections.
LANCOM
SIP terminal
equipment
ISDN PBX
ISDN termi-
nal equip-
ment
Internal VoIP domain
✔
✔
Internal numbers
✔
✔
✔
✔
External SIP telephone number
✔
SIP account access information
✔
External ISDN telephone num-
bers (MSNs)
✔
Country and local area code
✔
