Voice over IP (VoIP)
124
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:
• The “REGISTER” SIP message must be sent to the IP address of the OpenCom 100
using the 5060 destination port. For SIP subscribers, this setting is frequently
located under “SIP Server” or “SIP Settings” with the terms “Domain”, “Server IP”
and “Server Port”.
• The “REGISTER” SIP message must contain a valid user name and the appropriate
password (the User name and Password fields in the Configurator under User
Manager: User). For SIP subscribers, this setting is frequently located under “SIP
User Settings” or “SIP Account” with the terms “Authorization User” and
“Password”.
• The “REGISTER” SIP message also contains a SIP-URI in the spelling for e-mail
addresses, for example "Displayname" <sip:123@192.168.99.254>. The text
portion of the SIP-URI (“Display Name”) is not evaluated at log-on from the
OpenCom 100. The series of characters before “@” is the “User Name” or “SIP
Username”. The internal call number of the user must always be used here (the
Ph.No. field in the Configurator under User Manager: User). The series of char-
acters after “@” is the “Domain Name” or the “SIP Domain”. The IP address of the
OpenCom 100 must always be used here.
• A STUN server (Simple Traversal of UDP over NAT) or a SIP proxy is not required
because internal SIP subscribers on the LAN are directly connected to the
OpenCom 100. Switch these functions off if possible.
• With a SIP terminal, you can enter an international phone number with a leading
plus. When you enter a call number in the E.123 format, the plus char is substituted
by the “00” number sequence and the immediate line seizure via the standard
route is activated for the call. If you prefer to dial in this number format, you should
activate the international call number conversion (see E.164 conversion starting
on page 170).
Features
SIP subscribers can establish connections to all other terminals and trunks. The SIP
protocol generally works with block dialling. This is why the selected call number is
only activated after an internal clock has expired or activated immediately via the
hash key (“#”) when dialling. This is why code number procedures without the hash
key and code number procedures with a concluding hash key can be used. An
overview of code number procedures that can be used is located in the Configurator
To Next Page
Loading...
Need help?
General
