DVG-2032S/2016S User’s Manual
VoIP Gateway Configuration
D-Link Systems, Inc.
39
General Settings
→
FAX
Enable High Quality:
Check the box to increase approximately two times the bandwidth in order to
compensate possible loss of packet during transmission and offers a better and reliable fax quality.
FAX Codec:
Select
G.711 a-law
,
G.711 u-law
, or
G.726
for T.30 from the drop-down menu.
T.30 Bypass Payload Type:
Fill correct payload type of T.30 bypass method.
FAX Jitter Buffer:
Enter the buffer or jitter when receiving packets.
Note:
When you send a fax over an IP network, the IP network needs to support fax over IP
functionality (either T.38 or T.30). Please consult your VoIP Service Provider for this setting.
Function
Fax Detection Content of SDP of re-INVITE
Receive re-INVITE with T.38
Disable
No
N/A
Accept and change RTP to T.38
T.38 Fax
Yes
re-INVITE with T.38 and T.30 Accept and change RTP to T.38
T.30 Fax
Yes
re-INVITE with T.30
Accept and change RTP to T.38
T.30
Fax/Modem
Detect CED
only
re-INVITE with T.30
Accept and change RTP to T.38
T.30 Only
No
N/A
Accept and change RTP to T.38
T.38 Native
Yes
re-INVITE with T.38
Accept and change RTP to T.38
T.30 V.152
Yes
There is no Re-Invite for T.30
Bypass mode
Accept and change RTP to T.38
