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SIP Telephony
Voice over IP (VoIP)
163
1.
In the
Configurator
, open the
Telephony: Gateways
page.
2.
Click on the corresponding entry.
3.
Select the desired
Mode
under
Audio Processor 2
:
–
static
: For the audio processor 2, enter an IP address from the
Forum 5004/5008/5012 IP network which is not being used, such as
192.168.99.252 under
IP Address
.
–
DHCP
: the audio processor 2 receives an IP-address via DHCP, from the
communication server or from another DHCP server.
–
off
: the audio processor 2 is switched off. This is signalled by the
flashing triangle in the web console.
4.
Confirm with
Apply
.
The configuration page displays the audio processor’s MAC address. You will
need this for the static assignment of an IP address via a DHCP server.
SIP Telephony
The SIP Internet (Session Initiation Protocol) protocol provides you with a low-
cost, standardised option for telephoning via IP-based networks. The
Forum 5000 enables you to use external SIP telephone connections (“SIP
trunk lines”). The Forum 5004/5008/5012 communications system
supports configuration of standard SIP lines with one call number for each as
well as extension-capable SIP-DDI lines with base call number and extension.
Furthermore, internal SIP subscribers, SIP telephones or SIP telephony
software are also supported (see also
:
External SIP Connections
The
Telephony
:
Trunks
:
Route
menu gives you the option to configure a
bundle overflow, which automatically occupies a second line in case of a
breakdown or over-occupancy of the SIP connection. You can also set up
your system to route certain types of calls, such as international calls, to a SIP
connection.
You will also need a fast Internet connection such as DSL for SIP telephony.
You will also usually need the services of a SIP provider. A SIP provider
operates a special server (the SIP Registrar) to handle connections. The SIP
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