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6 TELEPHONY
DMS-CTC-20110713-0016 v2.0
6.1.2 Connection to the Traditional Telephone Network
Combining VoIP with the traditional telephone network
Some service providers use the traditional telephone network (PSTN) as a backup solution for your VoIP connection. This
way, you can still make calls over the traditional network if the VoIP service is down (for example, your MediaAccess
Gateway is powered off).
Applicability
If your MediaAccess Gateway:
Has an integrated filter, no additional connections are needed.
The DSL port must be directly connected to your telephone outlet. Do not put any filter or splitter between them!
Does not have an integrated filter, check if your MediaAccess Gateway has a PSTN port on the back panel (for more
information, see “PSTN Port (optional)” on page 10). If your MediaAccess Gateway has:
A PSTN port:
Connect the PSTN port to the Phone output of your filter or splitter.
No PSTN port, no connections are needed.
This is a VoIP-only variant. All calls passing through the MediaAccess Gateway will be done via VoIP.
Be aware that, if you are not connected to the traditional telephone network, emergency calls will not be possible
when your Internet connection is down or your MediaAccess Gateway is powered off.
How do I know if my MediaAccess Gateway has an integrated filter?
Check if the product name printed on the label of your MediaAccess Gateway ends with “wIF” (with
Integrated Filter). If this suffix is not present, then your MediaAccess Gateway does not have an
integrated filter.
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