202
Step 2
Press “
Flash”
to put the first party on hold.
Step 3
Dial a third party.
Step 4
After the third party answers the call, press
Flash
again
to invite the first party.
Step 5
Now all three parties are in a 3-way conference.
4.6.3.15 T38 Faxing
To make T38 faxing, enable
T38 support
. After that, connect a
fax machine to a FXS port of DSL router. Now you can treat it
as a normal phone and is able to send or receive fax to or from
other fax machines on the VoIP network.
In initial setup, faxing behaves like a normal call. After DSL
router detects the fax tone, it switches to T38 mode, and use it
as the transmitting approach.
4.6.3.16 Pass-Through Faxing
If
T38 support
is not enabled, faxing uses normal voice codec
as its coding approach. So this mode looks much like normal
phone calls.
4.6.4 Configuration Example
4.6.4.1 VoIP Call
This section describes how to set up a basic VoIP call with DSL
router. To make a 2-way call, we need the help of another party.
Here we use X-Lite, which is downloadable on
http://www.xten.com
.
The overall diagram is shown below. Besides 2 peers (GWGW
gateway and X-Lite soft-phone running on user PC), there
should be a SIP server exists on Internet or local network in
LAN side of DSL router, depending on interface selection on
VoIP configuration page. In this example, we use Asterisk,
which is available on
http://www.asterisk.org
.
Make sure both DSL router and soft-phone should be able to
reach SIP server. A ping command on DSL router console and
user PC can achieve this.
