Cisco MC3810 Installationsanleitung PDF herunterladen (Seite 51)

dtmf-relay

Configuring Voice over IP for Cisco MC3810 Series Concentrators 51

dtmf-relay

Use the dtmf-relay command to specify how an H.323 gateway relays DTMF tones through an IP

network. Options allow the gateway to forward tones “out-of-band”, or separate from the voice

stream. The no form of this command removes all signaling options and transmits the DTMF tones

as part of the audio stream.

dtmf-relay [cisco-rtp] [h245-signal] [h245-alphanumeric]

no dtmf-relay

Syntax Description

Default

DTMF tones are sent “inband”, or left in the audio stream, unless you use this command.

Command Mode

EXEC

Command History

Usage Guidelines

The dtmf-relay command determines the outgoing format of relayed DTMF tones. The gateway

automatically accepts all formats.

The gateway only sends DTMF tones in the format you specify if the remote device supports it. If

the remote device supportsmultiple formats, the gateway chooses the format based on the following

priority:

1 cisco-rtp (highest priority)

2 h245-signal

3 h245-alphanumeric

4 None – DTMF sent inband

cisco-rtp (Optional) Forwards DTMF tones using RTP protocol with a Cisco proprietary

payload type.

h245-signal (Optional) Forwards DTMF tones using the H.245 “signal” User Input Indication

method. Supports tones 0-9, *, #, and A-D.

h245-alphanumeric (Optional) Forwards DTMF tones using the H.245 “alphanumeric” User Input

Indication method. Supports tones 0-9, *, #, and A-D.

Release Modiﬁcation

11.3(2) NA This command was introduced.

12.0(5)T This command was modiﬁed for H.323 V2, adding dtmf-relay and

h245-signal.

12.0(7)XK This command is supported on the Cisco MC3810

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Cisco MC3810 Installationsanleitung Seite 51