User's Manual 1174 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
Parameter Description
unless the device behind NAT sends at least one IP packet from
the LAN to the WAN through the firewall. If the firewall blocks
T.38 packets sent from the termination IP fax, the fax fails.
To overcome this, the device sends No-Op (“no-signal”) packets
to open a pinhole in the NAT for the answering fax machine. The
originating fax does not wait for an answer, but immediately starts
sending T.38 packets to the terminating fax machine.
Note: To enable No-Op packet transmission, use the
NoOpEnable and NoOpInterval parameters.
V.150.1 Modem over IP
Note: These parameters are applicable only to the Gateway application.
Profile Number
[V1501AllocationProfile]
Defines the V.150.1 profile, which determines how many DSP
channels support V.150.1.
The value range is 0 to 20. The default is 0.
Note: For the parameter to take effect, a device reset is required.
SSE Payload Type Rx
configure voip > media fax-
modem > V1501-SSE-payload-
type-rx
[V1501SSEPayloadTypeRx]
Defines the V.150.1 (modem relay protocol) State Signaling
Event (SSE) payload type Rx.
The value range is 96 to 127. The default is 105.
SSE Redundancy Depth
configure voip > media fax-
modem > SSE-redundancy-depth
[V1501SSERedundancyDepth]
Defines the SSE redundancy depth.
The value range is 1-6. The default is 3.
SPRT Transport Ch.0 Max
Payload Size
configure voip > media fax-
modem > SPRT-transport-
channel0-max-payload-size
[V1501SPRTTransportChannel0
MaxPayloadSize]
Defines the maximum payload size for V.150.1 SPRT Transport
Channel 0.
The range is 140 to 256. The default is 140.
SPRT Transport Ch.2 Max
Payload Size
configure voip > media fax-
modem > SPRT-transport-
channel2-max-payload-size
[V1501SPRTTransportChannel2
MaxPayloadSize]
Defines the maximum payload size for V.150.1 SPRT Transport
Channel 2.
The range is 132 to 256. The default is 132.
SPRT Transport Ch.2 Max
Window Size
configure voip > media fax-
modem > SPRT-transport-
channel2-max-window-size
[V1501SPRTTransportChannel2
MaxWindowSize]
Defines the maximum window size of SPRT transport channel 2.
The value range is 8 to 32. The default is 8.
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