AASTRA DT390 for BusinessPhone User Guide EN - Manual (Page 78)

1424-EN/LZT 103 091 Uen D 2010-02-12 78
O THER U SEFUL F EATURES
Wait for the verification tone.
2. Press to finish the procedure.
• For incoming calls, the secondary phone cannot be called,
and the primary phone works as a normal standalone phone.
• For outgoing calls, both phones are treated as 2 separate
extensions.
14.6.3 Transferring Calls Between Tandem Configuration
Members
To transfer an ongoing call between members of a tandem configuration,
do the following:
1. Press R and enter your own directory number.
2. Press to transfer the call.
14.7 Networking
Networking is the connection of several sites within a company. The
connection can be set up through leased lines, public lines, Local Area
Network (LAN) or Wide Area Network (WAN). Ask the system adminis-
trator about details regarding networking.
14.8 IP Calls
IP calls are internal calls sent through an internal data network (LAN or
WAN) and the transfer of data and voice is made on the same line. If you
are connected to an internal data network, the IP connection is made
automatically. To minimize the traffic on the network, the speech quality
is decreased.
If the speech quality is not acceptable, you can disconnect the IP call and
switch to a non-IP call (alternative network). The switch from the IP net
to the non-IP net is made during the call, which means that the call does
not have to be disconnected.
14.8.1 Switching To a Non-IP Net During a Call
A switch to a non-IP call can only be done if the original call is an IP call,
otherwise you will receive a blocking tone.
To switch to a non-IP net during a call, do the following: