For example, if the end-user has configured a cell phone number in the field “
Forward to PSTN
” under
BASIC SETTINGS configuration page, all calls will be forwarded to the cell phone number after 4 rings.
F
ORWARD
C
ALLS TO
VOIP
By default, each incoming PSTN call is received over the FXS port. The end-user may forward such a
call to any preconfigured VoIP extension, in case the call is not answered in a certain number of rings.
The Default value of the parameter “Number of Rings” is 4. If during 4 rings, the incoming from the PSTN
call is not answered, the call will be forwarded to another VoIP number previously configured in the field:
”
Forward to VoIP
”. This parameter can also be found under BASIC SETTINGS configuration page.
F
AX
S
UPPORT
HT488 supports FAX in two modes: 1) T.38 (Fax over IP) and 2) fax pass through. T.38 is the preferred
method because it is more reliable and works well in most network conditions. If the service provider
supports T.38, please use this method by selecting Fax mode to be T.38 (default). If the service provider
does not support T.38, pass-through mode may be used. To send or receive faxes in fax pass through
mode, users must select all the Preferred Codecs to be PCMU/PCMA (G.711-u/a).
Grandstream Networks, Inc.
HT488 User Manual
Page
15 of 33
Firmware 1.0.3.64
Last Updated: 4/2007
