Forward Calls To Pstn; Forward Calls To Voip; One Stage Dialing; Fax Support - Grandstream Networks HT503 FXS/FXO User Manual

F C PSTN
ORWARD ALLS TO
Any VOIP call may be forwarded to a specified PSTN number if the call is not answered after a pre
configured numbers of rings. By default "Number of Rings" parameter has value 4.
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 C VOIP
ORWARD ALLS TO
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.
O S D
NE TAGE IALING
This feature is applicable for VoIP to PSTN calls. Any VoIP extension may dial directly to a local PSTN
number if the one-stage dialing feature is activated. This feature is configured under the FXO
Configuration page and requires SIP Server configuration and support. The special dial plan feature must
be activated in the SIP Server. An outbound call will be sent directly to the assigned FXO port account,
where there the HT503 will initiate a call to the local CO. The RequestURI header in the INVITE
message contains the phone number used to initiate the call to the local CO.
F S
AX UPPORT
HT503 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. HT503 User Manual
Firmware 1.0.0.6
Page 15 of 35
Last Updated: 6/2007