GW0017 User Manual
38
PSTN to IP(TX): adjust gain value from analog phone
FAX Parameter
The GW0017-128Sdevice supports the three fax modes: T.38
(IP-based), T.30 (Pass-Through) and Adaptive Fax Mode
(automatically match with the peer fax mode).
Fax Mode
There are three fax modes: T.38, T.30(Pass-through), and
Adaptive.
Include “a=X-fax”
Attribute
If this parameter is enabled, “a=X-fax” attribute will be carried
in SDP
Include “a=fax”
Attribute
If this parameter is enabled, “a=fax” attribute will be carried in
SDP
Include “a=X-modem”
Attribute
If this parameter is enabled, “a=X-modem” attribute will be
carried in SDP
Include “a=modem”
Attribute
If this parameter is enabled, “a=modem” attribute will be carried
in SDP
ECM
Whether to enable ‘Error Correction Mode’
（
ECM
）
.
Rate
The rate of sending or receiving fax, default value is 14400bps.
Tone Detection by
Fax sound is detected by caller, callee or automatically.
Switch into Fax Mode
When Detect CNG or
CED
If this parameter is enabled, the system will switch into fax
mode when CNG or CED is detected.
4.10.2
FXS Parameter
On the
Advanced
→
FXS/FXO
page, you can configure FXS parameters which include send
polarity reversal, detect hook flash, CID type and so on.
