E
XAMPLES
:
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 pressing 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 pressing the “#” key if it is configured as a send key or wait for 4 seconds.
NOTE:
When placing a direct IP call, the “Use Random Port” should be set to “NO”.
C
ALL
H
OLD
This function is applicable on the
FXS port
for VoIP calls only.
While in conversation, pressing the “flash”
button on the connected phone (if the phone has that button) places the remote end on hold. Pressing the
“flash” button again releases the previously held party and the conversation can resume. If no “flash”
button is available, then on-off hook quickly (hook flash) will do the same thing. You may lose the call if
‘hook flash’ is not quick enough.
C
ALL
W
AITING
This function is applicable on
FXS port
for VoIP calls only.
If call waiting feature is enabled, while the
user is in a conversation, he will hear a special 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.
C
ALL TRANSFER
The HT488 supports both blind transfer and attended transfer.
Blind Transfer
This function is applicable using the FXS port for VoIP calls only.
Assume that parties
A
and
B
are in
conversation. Party A wants to
Blind Transfer
Party B to C:
1.
A
presses FLASH on the analog phone to hear the dial tone.
2. Then
A
dials
*87
, then dials C’s number, and then presses #
3.
A
can hang up.
NOTE: “Enable Call Feature”
has to be set to “Yes” in web configuration page.
Three situations can follow the transfer:
1. A quick confirmation tone (temporarily using the call waiting indication tone) followed by a
dial tone. This indicates the transfer was successful (transferee has received a 200 OK from
transfer target). A can either hang up or make another call.
2. A quick busy tone followed by a restored call (on supported platforms only). This means the
transferee has received a 4xx response for the INVITE and we will try to recover the call. The
busy tone indicates the transfer has failed.
3. Busy tone keeps playing. This means we have failed to receive the second NOTIFY from the
transferee and the call has timed out.
Note
: this does not indicate the transfer has been
successful, nor does it indicate the transfer has failed. When transferee is a client that does not
support the second NOTIFY (such as our own earlier firmware), this situation occurs. In bad
network scenarios, this could also happen, although the transfer may have been completed
successfully.
Grandstream Networks, Inc.
HT488 User Manual
Page
11 of 33
Firmware 1.0.3.64
Last Updated: 4/2007
