fax-modem

This command configures fax parameters.

Syntax

(config-voip)# media fax-modem
(media-fax-modem)#

Command	Description
FaxRelayTimeoutSec	A channel during fax relay session cannot relatch on another RTP/RTCP/T38 stream until no T38 packets arrived from or sent to current stream during the timeout (sec).
V1501AllocationProfile	Defines the V.150.1 profile.
caller-id-transport-type	Defines the Caller ID Transport type.
ced-transfer-mode	Defines the CED transfer mode.
cng-detector-mode	Defines the fax CNG tone detector mode.
coder	Defines the Fax/Modem bypass coder.
ecm-mode	Enables ECM (Error Correction Mode) during T.38 Fax Relay.
enhanced-redundancy-depth	Defines the number of repetitions to be applied to control packets when using T.38 standard.
fax-cng-mode	0-Does not send a SIP re-INVITE, 1-Sends T.38 re-INVITE upon detection of fax CNG tone, 2-Sends T.38 re-INVITE upon detection of fax CNG tone or v8-cn signal
fax-transport-mode {bypass\|disable\|events-only\|t.38-relay}	Defines the Fax over IP transport method.
max-rate	Limits the maximum transfer rate of the fax during T.38 Fax Relay session.
modem-bypass-output-gain	Defines the modem bypass output gain [dB].
packing-factor	Defines the number of 20 msec payloads to be generated in a single RTP fax/modem bypass packet.
redundancy-depth	Defines the depth of redundancy for non-V.21 T.38 fax packets.
rx-t38-over-rtp-payload-type	Defines the received T.38 over RTP payload type.
sprt-transport-channel0-max-payload-size	Defines the V.150.1 SPRT transport channel 0 max payload size.
sprt-transport-channel2-max-payload-size	Defines the V.150.1 SPRT transport channel 2 max payload size.
sprt-transport-channel2-max-window-size	Defines the V.150.1 SPRT transport channel 2 max window size.
sprt-transport-channel3-max-payload-size	Defines the V.150.1 SPRT transport channel 3 max payload size.
sse-redundancy-depth	Defines the V.150.1 SSE redundancy depth.
v1501-sprt-payload-type-rx	Defines the received V.150.1 SPRT payload type.
v1501-sse-payload-type-rx	Defines the received V.1501.1 SSE RTP payload type.
v21-modem-transport-type	Defines the V.21 modem transport method.
v22-modem-transport-type	Defines the V.22 modem transport method.
v23-modem-transport-type	Defines the V.23 modem transport method.
v32-modem-transport-type	Defines the V.32 modem transport method.
v34-modem-transport-type	Defines the V.34 modem transport method.
version	Defines the T.38 fax relay version.

Command Mode

Privileged User

Example

This example configures the fax transport type to T.38:

(config-voip)# media fax-modem
(media-fax-modem)# fax-transport-mode t.38-relay
(media-fax-modem)# activate