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subscriber tries to dial an emergency number, he will hear the
announcement "This phone does not allow emergency calls. Please use
an alternative."
Requirements:
•
Portforwarding configured on router
Configure the PBX as follows if at least one remote extension is not
coupled over a VPN tunnel:
Caution: The generation of user passwords and step 4 to 6
are essential protection measures against the access by third
parties.
1. Configure a VoIP channel as an internal VoIP channel for each remote
extension planned.
2. Create the internal numbers for the external private branch exchanges
(a maximum of two VoIP subscribers is recommended).
3. If required, change the automatically generated PINs and passwords.
Note: The user passwords are needed to authenticate the VoIP phones
when they are registered with the PBX.
4. In dependence on the phone tariffs, restrict the exchange line authori-
sation for remote extensions (e.g. National). At times of the day when
phone calls are usually not made, e.g. in the night or outside of business
hours, it is possible to restrict the exchange line authorisation to a
minimum (under Subscriber (scr.) > Properties > Exchange line
settings).
COMmander 6000/R/RX - Firmware V7.0D - Advanced Information V19 04/2018
Functions, Uses, Concepts
VoIP
215
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