Grandstream Networks, Inc. HT-386 User Manual Page 12 of 34
Firmware 1.0.3.64 Last Updated: 2/2007
DIRECT IP CALLS
Direct IP calling allows two parties, that is, a HT with an analog phone and another VoIP Device, to talk to
each other in an ad hoc fashion without a SIP proxy. This kind of VoIP calls can be made between two
parties if:
• Both the HT–386 and other VoIP Device(i.e., another HT ATA or Budgetone SIP phone or other
VoIP unit) have public IP addresses, or
• Both the HT–386 and other VoIP Device are on the same LAN using private IP addresses, or
• Both the HT–386 and other VoIP Device can be connected through a router using public or
private IP addresses (with necessary port forwarding or DMZ).
To make a direct IP call, first pick up the analog phone or turn on the speakerphone on the analog phone,
then access the voice menu prompt by dial “***” or press the button on the HT-286, and dials “47” to
access the direct IP call menu. User will hear a voice prompt “Direct IP Calling” and a dial tone. Enter a
12-digit target IP address to make a call. Destination ports can be specified by using “*4” (encoding for “:”)
followed by the port number.
Examples:
1. If the target IP address is 192.168.0.10, the dialing convention is Voice Prompt with option 47,
then 192 168 000 010 followed by the “#” key if it is configured as a send key or wait for more
than 5 seconds.
2. If the target IP address/port is 192.168.1.20:5062, then the dialing convention would be: Voice
Prompt with option 47, then 192168001020*45062 followed by the “#” key if it is configured as
a send key or wait for 4 seconds.
NOTE:
• When completing a direct IP call, the “Use Random Port” should set to “NO”.
• You can NOT make direct IP calls between FXS1 to FXS2 since they are using same IP.
CALL HOLD
Place a call on hold by pressing the “flash” button on the analog phone (if the phone has that button).
Press the “flash” button again to release the previously held Caller and resume conversation. If no “flash”
button is available, use “hook flash” (toggle on-off hook quickly). You may drop a call using hook flash.
CALL WAITING
Call waiting tone (3 short beeps) indicates an incoming call, if the call waiting feature is enabled. Toggle
between incoming call and current call by pressing the “flash” button. First call is placed on hold. Press
the “flash” button to toggle between two active calls.
CALL TRANSFER
Assume that call Caller A and B are in conversation. A wants to Blind Transfer B to C:
1. Caller A presses FLASH on the analog phone to hear the dial tone.
2. Caller A dials *87 then dials caller C’s number, and then # (or wait for 4 seconds)
3. Caller A will hear the confirm tone. Then, A can hang up.