Operation Manual

Aastra 673xi / 675xi SIP Telephones
8
About this Manual
This manual describes how to use an Aastra 673xi / 675xi SIP telephone which is
connected to the OpenCom 1000 communications system. If you require further
information, please consult the following manuals available for the models of the
Aastra 673xi / 675xi product family:
Aastra 675xi resp. Aastra 675xi IP Telephone: Installation Guide (print version
included with the product): describes features, controls and possible connections
of your SIP telephone. A specific manual is provided for each model of the product
family. You may download a PDF version of the installation guide for the
Aastra 6730i, Aastra 6731i, Aastra 6751i / Aastra 51i, Aastra 6753i / Aastra 53i,
Aastra 6755i / Aastra 55i and Aastra 6757i / Aastra 57i terminals from the Aastra
website.
Aastra 673xi resp. Aastra 675xi IP Telephone: User Guide: describes the most
frequently used IP telephony features for the telephone user. A specific manual is
provided for each model of the product family. You may download a PDF version
of the installation guide for the Aastra 6730i, Aastra 6731i, Aastra 6751i /
Aastra 51i, Aastra 6753i / Aastra 53i, Aastra 6755i / Aastra 55i and Aastra 6757i /
Aastra 57i terminals from the Aastra website.
Model 675xi Series Phones: Administrator Guide (English): contains extensive
information for the administrator and describes how to configure the SIP tele-
phone within the network. You may download a PDF version of this user guide
(valid for the Aastra 9143i, Aastra 9480i, Aastra 9480i CT, Aastra 673xi and
Aastra 675xi) from the Aastra website.
Distinctive Features of the Communications System
When you operate an Aastra 673xi / 675xi on the OpenCom 1000 communications
system, some functions deviate from how they are described in the installation
guide and in the user guide.
This applies especially to functions which are provided locally on the device as
well as via the OpenCom 1000 communications system. In these cases, the func-
tions provided by the communications system are used. The corresponding local
device menus will not appear then.
■ The Aastra 673xi / 675xi does not offer call forwarding. This means that in the
simplified Options menu the item 1.Call Forward is not available (please refer
to The Options Menu starting on page 38). Use the call forwarding function of
the OpenCom 1000 communications system (please refer to Call Forwarding
starting on page 21).