Operation & user’s manual [PDF] (41 pages)
- Updated: 08.08.2026
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Gigaset S675 IP, S685 IP, C475 IP:
New and updated functions
This document is a supplement to the user guide for the following Gigaset VoIP phones:
Gigaset C475 IP, Gigaset S675 IP and Gigaset S685 IP
In the time since the user guides were completed, the functionality of these devices has
been increased (firmware version 02.140 or higher). These changes are described in this
document.
Important information for the Gigaset S685 IP:
This document is a supplement to the user guide for Gigaset S685 IP devices manufactured
before May 2009. The label in the handset's battery compartment will bear the inscription
"Gigaset S68H" (no "S2").
The label is located on the bottom of the battery compartment.
The user guide can be found on the CD supplied with the device.
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Contents
Overview of the new and updated functions . . . . . . . . . . . . . . . . . . . . . . . . 3
Description of new and updated functions . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Changes to phone setup process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Starting the Gigaset.net assistant when first opening the Gigaset.net-directory . . . . . . . 7
Info Center – with the handset always online . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Sending and receiving SMS (text messages) via VoIP . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Reading e-mail messages on the handset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Deactivating your handset's microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Network services during an external call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operating the base on on the PABX –
Setting access codes (external line prefixes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Entering an HTTP proxy server (only when connected to an
internal company network) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Activating/deactivating the STUN server of the Gigaset.net connection . . . . . . . . . . . . 19
Activating the fixed line network connection as an alternative connection . . . . . . . . . . 20
R key function for VoIP – Hook flash/call diversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Defining local communication ports for VoIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Amendment to "Call signalling and number assignment" . . . . . . . . . . . . . . . . . . . . . . . . 25
Amendment to "Changing the display language" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Amendment to "Defining dialling plans" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Correction to "Checking the base MAC address" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Checking extended service information for the base . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Information on operating Gigaset VoIP telephones with
Network Address Translation (NAT) routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Edited/extended table of VoIP status codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Deleted function: "Send line selection for outgoing calls with */#" . . . . . . . . . . . . . . . . 33
Handset menu overviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Gigaset S67H to Gigaset S675 IP, Gigaset S68H to Gigaset S685 IP . . . . . . . . . . . . . . . . 34
Gigaset C47H to Gigaset C475 IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
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Overview of the new and updated functions
Overview of the new and updated functions
New functions
u Info Center: You can use your Gigaset S67H/S68H/C47H handset to retrieve online con-
tent that is provided specifically for the handset from the Internet.
£ Page 8
u You can now also send and receive SMS messages via your VoIP connection. To send
SMS messages via VoIP, you merely have to specify one of your VoIP connections as a
send line for the send service centre.
£ Page 12
u You can display the text of e-mail messages on the handset.
£ Page 14
u You can deactivate your handset's microphone during an external call via the left display
key. In this case, the other party cannot hear you, but you can still hear him/her. Network
functions (e.g. external consultation calls, initiate/end conference call) that can no
longer be accessed via the left display key due to this new function are now provided in
the pop-up menu.
£ Page 16
u If you connect the telephone to a PABX, you can save the PABX access code on your
phone.
£ Page 18
u If you connect your phone to an internal company or organisation network (Intranet),
you can (if necessary) store the address of the internet HTTP proxy server on the base.
Each time the telephone accesses the Internet, this HTTP proxy server is addressed.
£ Page 18
u You can now activate your fixed line connection as an alternative connection. If the tel-
ephone cannot establish a VoIP connection, it automatically attempts to establish a con-
nection via the fixed line network.
£ Page 20
u As before, you can assign a VoIP provider feature to the S key. Alternatively, you can
use the S key for transferring calls (call transfer via VoIP).
£ Page 21
u Depending on your router's NAT, you can activate/deactivate the STUN server for your
Gigaset.net connection.
£ Page 19
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