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FXO-08 Technical Manual EN-V2.0a
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3.4 Advanced Configuration
3.4.1 System setting
prack
PRACK is defined in RFC 3262:
Reliability of Provisional Responses in
SIP. You can accommodate your
softswitch (Proxy Server) to Enable or
Disable this feature.
ROH (FXS only)
NA
Send billing signal (FXS only)
NA
T.38 NoAttribute
No attribute (Fax version, BitRate,
Buffer, Datagram… ) indicated in T.38
Re-Invite with Session Description
Protocol (SDP).
You can Enable/Disable this option.
FAX redundancy depth
Specify the resend times (0~3)for FAX
error packet,
T.38 FAX Type
Select the FAX Type to use, you can
choose the following: