A D D I T I O N A L V O I P P A R A M E T E R S
C H A P T E R 1 4
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ECOTEL 3G 16.1. Revised: 2011.
VoipT38CtrlDataRedundancy=<int>
Defines the redundancy level for control packets:
0 = Disable (default)
1-7 = Sets level
VoipT38ImageDataRedundancy=<int>
Defines the redundancy level for fax content:
0 = Disable (default)
1-3 = Sets level
VoipAPartyCanSwitchToT38=<mode>
Enter Yes (default) to activate fax detection in both directions. When No is set, fax detection and translation
to T.38 are carried out only when the call comes from VoIP.
VoipSuppressInitialT38Signalling=<mode> (SIP only)
Enter Yes to suppress the SDP header m=image t38 in all SIP messages until reinvite of the actual fax detec-
tion occurs (default No).
VoipT38Enforce=<mode>
Enter Yes to switch to T38 although the B party does not signalize T38. (default Yes).
VoipFaxDisableAfterConnect=<sec>
Deactivates fax detection after the number of seconds entered has passed. This is intended to avoid conver-
sional disruption resulting from fax transmission noises when a fax machine is next to a phone that has an
established call.
VoipT38Version=<int>
0 = T38 version 0 (default)
1 = T38 version 1
2 = T38 version 2002 ASN1 syntax TPKT enabled
3 = T38 version V34 V33 support 2002 ASN1 syntax TPKT enabled. Is needed to send v34 faxes via T38.
The following parameters are responsible for setting the modem transport method if a modem connection is de-
tected.
VoipV21Transport=<mode>
0
=disabled (must be set to 0).
VoipV22Transport=<mode>
0
=disabled (default),
2
=bypass.
VoipV23Transport=<mode>
0
=disabled (default),
2
=bypass.
Table 14.9
Customized Parameters: VoIP Fax
(continued)
VoIP Fax/Modem Parameters
