Unicorn 3112 User Manual
Copyright © 2008
Hanlong Technology Co., Ltd
Page 9 of 42
stutter tone if there is another incoming call. User can press the flash button to put the
current call party on hold and switch to the other call. Pressing flash button toggles
between two active calls.
5.2.4. 3-way Conferencing
Unicorn3112 supports 3-way conference in two styles: star code style or Bellcore style.
Star Code Style 3-way Conference
Assuming that call party A and B are in conversation. A wants to bring C in a conference:
1. A presses FLASH (on the analog phone, or Hook Flash for old model phones) to get a
dial tone.
2. A dials *23 then C’s number then # (or wait for 4 seconds).
3. If C answers the call, then A press “flash” to bring B, C in the conference.
4. If C does not answer the call, A can press “flash” back to talk to B.
Bellcore Style 3-way Conference
Bellcore style 3-way conference is also supported. To do this, user needs to enable “Use
Bell-style 3-way Conference” in FXS web configuration.
Assuming that call party A and B are in conversation. A wants to bring C in a conference:
1. A presses FLASH (on the analog phone, or Hook Flash for old model phones) to get a
dial tone.
2. A dials C’s number then # (or wait for 4 seconds).
3. If C answers the call, then A press “flash” to bring B, C in the conference.
4. If C does not answer the call, A can press “flash” back to talk to B.
5.2.5. Direct IP-to-IP Calls
Direct IP calling allows two parties, that is, a FXS Port with an analog phone and another
VoIP Device, to talk to each other in an ad hoc fashion without a SIP proxy.
Elements necessary to completing a Direct IP Call:
1. Both Unicorn3112 and other VoIP Device, have public IP addresses, or
2. Both Unicorn3112 and other VoIP Device are on the same LAN using private IP
addresses, or
3. Both Unicorn3112 and other VoIP Device can be connected through a router using
public or private IP addresses (with necessary port forwarding or DMZ).
Unicorn3112 supports two ways to make Direct IP Calling:
Using IVR
1. Pick up the analog phone then access the voice menu prompt by dial “***”
2. Dial “47” to access the direct IP call menu
