Auerswald COMpact 3000 analog Operating Manual page 410

Settings
VoIP
Configuring Remote Extensions
3. If required, change the automatically generated PINs and passwords (see chapter
Settings > Protection from Unauthorised Access > Configuring User PINs and
Passwords).
Note: The user passwords are needed to authenticate the VoIP telephones
when they are registered with the PBX.
4. In dependence on the telephone tariffs, restrict the exchange line authorisation 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 PROPERTIES > Internal
subscribers > Subscriber properties > Exchange line settings).
5. Configure a call restrictor (e.g. for added value services or mobile radiocommunica-
tions networks – 0900, 0180, 01...) and assign it to the remote extensions (under
PROPERTIES > Internal subscribers > Subscriber properties > Exchange line
settings).
6. Configure the STUN server for connecting external VoIP subscribers.
7. Configure the size of the jitter buffer for the remote extensions.
8. Configure the remote extensions. To do this, you need the following information:
The external IP address or URL of the PBX (as registrar and domain)
The internal number of the VoIP subscribers (as MSN or user name)
The user password of the VoIP subscriber (as registration PIN or password)
STUN server (the same as in Step 6)
Note: If the Internet connection on the PBX does not have a permanent IP
address, an account with a provider for dynamic DNS is also required
(e.g., dyndns.org). Enter the associated URL in the VoIP telephone as
registrar and domain (e.g., pbx.dyndns.org).
9. Check whether the VoIP subscriber was successfully registered on the PBX
(overview for Status internal VoIP subscribers).
10. If necessary, enable DiffServ in order to increase VoIP call quality.
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COMpact 3000 analog/ISDN/VoIP - Firmware V4.0 - Operating Manual V06 12/2020