TELES ECOTEL, Руководство пользователя

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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
236
ECOTEL 3G 16.1. Revised: 2011.
1 4 . 6 F A X / M O D E M P A R A M E T E R S
Table 14.9 Customized Parameters: VoIP Fax
VoIP Fax/Modem Parameters
VoipFaxTransport=<int>
0 = fax detection is switched off, no codec fallback at all (default).
1 = signaling will switch to T.38 (framesize 40ms). The codec will change when the system detects a fax or
modem connection on the channel.
2 = fallback to G711a (framesize 40ms).
NOTE: Bear in mind that if T.38 is defined in the
VoipCompression=<list>
parameter of the
VoIP profile, the system will switch only when it detects a modem connection. Fax calls will still
be transmitted using T.38.
VoipFaxBypassPayloadType=<num>
Defined the payload type for a fax’s RTP packets when T.38 is not used (default 102).
VoipFaxMaxRate=<num>
If the peer does not support auto negotiation or has a fixed transmission rate, you can define the fixed rate:
0 - 2400 Bit/sec
1 - 4800
2 - 7200
3 - 9600 (default)
4 - 12000
5 - 14400
EXAMPLE:
VoipFaxMaxRate=5
VoipFaxECM=<mode>
You can use this parameter to enable the error correction mode for fax transmission:
yes
=enabled,
no
=disabled (default).
VoipFaxProtocol=<int>
Defines the protocol used:
0 = TCP
1 = FRF.11
2 = UDP, data-rate management 1
3 = UDP, data-rate management 2 (default)
VoipT38ErrorCorrectionMode=<int>
Sets the error-correction mode:
0 = Redundancy (default)
1 = Forward error correction