106
Voice over IP (VoIP)
SIP Telephony
Internal SIP Subscribers
The Comfort Pro S becomes available as the SIP server for internal SIP subscriber telephony switching
services. SIP telephones connected via LAN or SIP programmes installed on workstation computers can thus
establish connections to all other devices or trunks connected to the Comfort Pro S. For operation as a SIP
server a
is required.
Licence Assignment
The number of possible SIP subscribers is determined by the number of licences purchased. In order to
provide you with the greatest possible flexibility regarding usage of available licences, licence assignment is
dynamic via the “Floating licence”. Using a user/password combination (“SIP log on”) you can have several
SIP subscribers under the same call number. Only every new SIP log-on occupies a new licence. The
technical log-on process of a SIP subscriber with a valid user name and correct password is always
successful. Only when a connection is established is there an attempt made to occupy a licence under the
SIP log-on. If all licences are occupied currently, the SIP subscriber can only make emergency calls.
N
Note:
If the technical log-on is not successful due to an incorrect user name or
incorrect password, the SIP subscriber cannot establish any connections – no
emergency calls either.
When a SIP subscriber logs off, when terminating the programme, for example, the associated licence will
become available immediately. A licence is also made available when a SIP subscriber’s regular status query
is not conducted. The internal clock for automatic log-out is determined by the
Profile
assigned under
Telephony
:
Devices
:
VoIP Phones
. The (
Keepalive
) internal clock setting is located on the
Telephony
:
Extended
:
VoIP profile
page.
Detailed information on the current licence assignment and on logged-on SIP subscribers is located on the
System Info
:
Telephony
:
SIP phones
page. This page is where you can reset licence assignment at any time
by clicking on
Reset licences
.
Technical Notes
The names of settings for the various SIP telephones or SIP programmes are not uniform unfortunately.
Please refer to the
(Help)
on the
Telephony
:
Devices
:
VoIP Phones
page and the following notes when
configuring SIP subscribers:
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