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OxyGEN
mini
Office
Administrator’s Guide
Address Mapping
The Network Address Translation (NAT) service of OxyGEN miniOffice allows multiple hosts in the internal
LAN to share the same external (public) IP address. While this is adequate for most users, it is sometimes
required (normally in business environments), to share more than one external IP addresses. This is the
case, for example, when a SOHO/SME has been provided multiple static IP addresses by the ISP and
the administrator wants to use one of these IP addresses for the company’s Web server, a second for
the FTP server, etc.
The
Address Mapping
configuration sub-menu allows the controlled mapping of external IP addresses
to LAN hosts.
Figure 9.8: NAT Static Address Mapping
In order to configure such a mapping:
1. Enter the
External Address
value
2. Specify the LAN host this mapping rule will apply to. Under the
LAN Address
heading, enter the
LAN IP address of the internal server. Note that, if the desired LAN server obtains its IP address from
the OxyGEN miniOffice through DHCP, you can select it from the drop-down list.
Repeat the above procedure for all required external IP addresses and corresponding LAN servers,
and finally click
Apply
to activate the service.
Gennet s.a.
101
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OxyGEN
mini
Office
Administrator’s Guide
Gennet s.a.
102
Page 103 / 237
10
Voice Menu
The
Voice
configuration menu handles all parameters related to the voice operation of the OxyGEN
miniOffice. You can access the following voice sub-menus:
Voice Service
External Lines
VoIP Trunking
Local Extensions
DECT Station
ISDN Interfaces
Dial Plan
Restrictions
Speed Dials
Black List
103
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OxyGEN
mini
Office
Administrator’s Guide
Foreword
Before presenting the different sub-menus with the parameters related to the voice operation of OxyGEN
miniOffice, it is important to understand the structure and functionality of the different entities presented.
First we have the
External Lines
.
These are the different types of connections to the external
telephony network:
the Voice over IP (VoIP) service accounts of the VoIP-over-broadband service provider
the FXO port(s) connecting to the public PSTN network (optional feature)
the ISDN interface(s) configured to operate in TE mode, for connecting to the public ISDN network
(optional feature)
An additional special case of External Line is the
VoIP Trunk
connection (optional feature).
The
difference between the VoIP lines and the VoIP trunk is that the former are normal VoIP client connections
registering at the provider’s SIP Proxy / Softswitch, whereas the latter is a special point-to-point type of
connection, with no registration requirement, used for transparently forwarding incoming VoIP calls from
a specific remote server to one or more local voice interfaces or extensions and vice versa.
Figure 10.1: Voice External Lines and Local Extensions
On the other hand, we have
Local Extensions
.
These are the internal phone numbers and
connections of the telephony network. Local Extensions include:
FXS ports with connected analog phones or FAX machines
Gennet s.a.
104
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OxyGEN
mini
Office
Administrator’s Guide
DECT handsets registered at the embedded DECT basestation of the OxyGEN miniOffice (optional
feature)
external VoIP phones connected either through wired Ethernet or through WiFi
ISDN interface(s) configured to operate in NT mode, for connecting to ISDN terminals or user ISDN
PBXs (optional feature)
For each
External Line
one or more
Local Extensions
can be assigned as targets of incoming calls.
This way it is selected which FXS port, DECT handset, or other Local Extension is going to ring when a call
is received by the External Line.
Likewise, for each
Local Extension
, one of the
External Lines
is selected as the line used for outgoing
calls towards the external telephony network.
Gennet s.a.
105

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