User's Manual
546
Document #: LTRT-65417
MP-11x & MP-124
Parameter
Description
side.
[1]
Relay = CNG is detected on the originating side. CNG
packets are sent to the remote side according to T.38 (if
IsFaxUsed = 1) and the fax session is started. A SIP Re-
INVITE message isn’t sent and the fax session starts by the
terminating device. This option is useful, for example, when
the originating device is located behind a firewall that blocks
incoming T.38 packets on ports that have not yet received
T.38 packets from the internal network (i.e., originating
device). To also send a Re-INVITE message upon detection
of a fax CNG tone in this mode, set the parameter
FaxCNGMode to 1.
[2]
Events Only = CNG is detected on the originating side
and a fax session is started by the originating side using the
Re-INVITE message. Usually, T.38 fax session starts when
the ‘preamble’ signal is detected by the answering side.
Some SIP devices don’t support the detection of this fax
signal on the answering side and thus, in these cases it is
possible to configure the device to start the T.38 fax session
when the CNG tone is detected by the originating side.
However, this mode is not recommended.
Note:
This parameter can also be configured in an IP Profile.
Web: Fax Relay Enhanced
Redundancy Depth
EMS: Enhanced Relay
Redundancy Depth
[FaxRelayEnhancedRedundancy
Depth]
Defines the number of times that control packets are
retransmitted when using the T.38 standard.
The valid range is 0 to 4. The default value is 2.
Web: Fax Relay Redundancy
Depth
EMS: Relay Redundancy Depth
[FaxRelayRedundancyDepth]
Defines the number of times that each fax relay payload is
retransmitted to the network.
[0]
= (Default) No redundancy
[1]
= One packet redundancy
[2]
= Two packet redundancy
Note:
This parameter is applicable only to non-V.21 packets.
Web: Fax Relay Max Rate (bps)
EMS: Relay Max Rate
[FaxRelayMaxRate]
Defines the maximum rate (in bps) at which fax relay messages
are transmitted (outgoing calls).
[0]
2400 = 2.4 kbps
[1]
4800 = 4.8 kbps
[2]
7200 = 7.2 kbps
[3]
9600 = 9.6 kbps
[4]
12000 = 12.0 kbps
[5]
14400 = 14.4 kbps (default)
Note:
The rate is negotiated between both sides (i.e., the device
adapts to the capabilities of the remote side). Negotiation of the
T.38 maximum supported fax data rate is provided in SIP’s SDP
T38MaxBitRate parameter. The negotiated T38MaxBitRate is
the minimum rate supported between the local and remote
endpoints.
Web: Fax Relay ECM Enable
EMS: Relay ECM Enable
[FaxRelayECMEnable]
Enables Error Correction Mode (ECM) mode during fax relay.
[0]
Disable
[1]
Enable (default)
Summary of Contents for MediaPack MP-112
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Page 21: ...Part I Getting Started with Initial Connectivity ...
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Page 30: ...User s Manual 30 Document LTRT 65417 MP 11x MP 124 Reader s Notes ...
Page 31: ...Part II Management Tools ...
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Page 86: ...User s Manual 86 Document LTRT 65417 MP 11x MP 124 Reader s Notes ...
Page 91: ...Part III General System Settings ...
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Page 103: ...Part IV General VoIP Configuration ...
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Page 172: ...User s Manual 172 Document LTRT 65417 MP 11x MP 124 Reader s Notes ...
Page 199: ...Part V Gateway Application ...
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Page 287: ...Part VI Stand Alone Survivability Application ...
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Page 319: ...Part VII Maintenance ...
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Page 347: ...Part VIII Status Performance Monitoring and Reporting ...
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Page 377: ...Part IX Diagnostics ...
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Page 403: ...Part X Appendix ...
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