Aastra Telecom 800 manual Technical Notes

Voice over IP (VoIP) SIP Telephony

Note: If the technical log-on is not successful due to an in- correct user name or incorrect password, the SIP subscriber cannot establish any connections – no emergency calls ei- ther.

When a SIP subscriber logs off, when terminating the program, for example, the associated license will become available immediately. A license 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 license 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 license assignment at any time by clicking on Reset licences.

Technical Notes

The names of settings for the various SIP telephones or SIP programs 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 Aastra 800 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 appro- priate 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 “Authori- zation 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 Aastra 800. 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 characters after “@” is the “Domain Name” or the “SIP Domain”. The IP address of the Aastra 800 must always be used here.

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