User's Manual 1032 Document #: LTRT-27045
Mediant 1000B Gateway & E-SBC
Parameter Description

 [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.
Fax Relay ECM Enable
configure voip > media fax-
modem > ecm-mode
[FaxRelayECMEnable]
Enables Error Correction Mode (ECM) mode during fax relay.
 [0] Disable
 [1] Enable (default)
Fax/Modem Bypass Coder
Type
[FaxModemBypassCoderType
]
Determines the coder used by the device when performing
fax/modem bypass. Typically, high-bit-rate coders such as G.711
should be used.
 [0] G.711Alaw= (Default) G.711 A-law 64
 [1] G.711Mulaw = G.711 µ-law
Fax/Modem Bypass Packing
Factor
configure voip > media fax-
modem > packing-factor
[FaxModemBypassM]
Defines the number (20 msec) of coder payloads used to generate a
fax/modem bypass packet.
The valid range is 1, 2, or 3 coder payloads. The default is 1 coder
payload.
configure voip > media fax-
modem > fax-modem-
telephony-events-mode
[FaxModemNTEMode]
Determines whether the device sends RFC 2833 ANS/ANSam
events upon detection of fax and/or modem Answer tones (i.e., CED
tone).
 [0] = Disabled (default)
 [1] = Enabled
Note: The parameter is applicable only when the fax or modem
transport type is set to bypass or Transparent-with-Events.
Fax Bypass Payload Type
configure voip > media rtp-rtcp
> fax-bypass-payload-type
[FaxBypassPayloadType]
Defines the fax bypass RTP dynamic payload type.
The valid range is 96 to 120. The default is 102.
configure voip > media rtp-rtcp
> modem-bypass-payload-
type
[ModemBypassPayloadType]
Defines the modem bypass dynamic payload type.
The range is 0-127. The default is 103.
volume
[FaxModemRelayVolume]
Defines the fax gain control.
The range is -18 to -3, corresponding to -18 dBm to -3 dBm in 1-dB
steps. The default is -6 dBm fax gain control.
Fax Bypass Output Gain
configure voip > media fax-
modem > fax-bypass-output-
gain
[FaxBypassOutputGain]
Defines the fax bypass output gain control.
The range is -31 to +31 dB, in 1-dB steps. The default is 0 (i.e., no
gain).
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