Voice over IP (VoIP)
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internal subscribers is configured on the pages under Telephony: Call Distribution
(Incoming DDI or Outgoing DDI). Please note the explanations on these pages in the
online help. Furthermore, assigning extensions using placeholders (“wildcards”) is
possible. The online help offers an explanation under the keyword Call Number
Mapping.
Internal SIP Subscribers
The OpenCom 130 / 150 becomes available as the SIP server for internal SIP sub-
scriber telephony switching services. SIP telephones connected via LAN or SIP pro-
grammes installed on workstation computers can thus establish connections to all
other devices or trunks connected to the OpenCom 100. For operation as a SIP server
a MGW Interface Card is required.
Licence Assignment
The number of possible SIP subscribers is determined by the number of licences pur-
chased. 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 tech-
nical 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.
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 sub-
scribers 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.
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