Chapter 3 – Related MultiVOIP Setup Parameters

 

 

 

 

 

 

 

Voice/Fax Parameter Definitions Continued

 

 

 

 

 

 

 

Field Name

Values

Description

 

 

DTMF Parameters

 

 

 

 

 

 

 

 

DTMF Gain

--

The DTMF Gain (Dual Tone Multi-Frequency) controls

 

 

 

 

the volume level of the DTMF tones sent out for Touch-

 

 

 

 

Tone dialing.

 

 

DTMF Gain,

+3dB to -31dB &

Default value: -4 dB. Not to be changed except under

 

 

High Tones

“mute”

supervision of MultiTech’s Technical Support.

 

 

DTMF Gain,

+3dB to -31dB &

Default value: -7 dB. Not to be changed except under

 

 

Low Tones

“mute”

supervision of MultiTech’s Technical Support.

 

 

Duration

60 – 3000 ms

When DTMF: Out of Band is selected, this setting determines

 

 

(DTMF)

 

how long each DTMF digit ‘sounds’ or is held. Default = 100

 

 

 

 

ms.

 

 

DTMF

Out of Band, or Inband

When DTMF Out of Band is selected, the MultiVOIP detects

 

 

In/Out of

 

DTMF tones at its input and regenerates them at its output.

 

 

Band

 

When DTMF Inband is selected, the DTMF digits are passed

 

 

 

 

through the MultiVOIP unit as they are received.

 

 

FAX Parameters

 

 

 

Fax Enable

Y/N

Enables or disables fax capability for a particular channel.

 

 

 

 

 

 

 

Max Baud

2400, 4800, 7200, 9600,

Set to match baud rate of fax machine connected to channel

 

 

Rate

12000, 14400 bps

(see Fax machine’s user manual). For CM managed fax calls it

 

 

(Fax)

 

is recommended to use 9600.

 

 

 

 

Default = 14400 bps.

 

 

 

 

 

 

 

Fax Volume

-18.5 dB

Controls output level of fax tones. To be changed only under

 

 

(Default =

to –3.5 dB

the direction of Multi-Tech’s Technical Support.

 

 

-9.5 dB )

 

 

 

 

 

 

 

 

 

Jitter Value

Default =

Defines the inter-arrival packet deviation (in milliseconds) for

 

 

(Fax)

400 ms

the fax transmission. A higher value will increase the delay,

 

 

 

 

allowing a higher percentage of packets to be reassembled. A

 

 

 

 

lower value will decrease the delay allowing fewer packets to

 

 

 

 

be reassembled.

 

 

 

 

 

 

 

Mode (Fax)

FRF 11; T.38

FRF11 is frame-relay FAX standard using these coders: G.711, G.728,

 

 

 

 

G.729, G.723.1.

 

 

 

 

T.38 is an ITU-T standard for storing and forwarding FAXes

 

 

 

 

via email using X.25 packets. It uses T.30 fax standards and

 

 

 

 

includes special provisions to preclude FAX timeouts during

 

 

 

 

IP transmissions. Must use T.38 when faxing to/from CM.

 

 

 

 

Note: When the MultiVOIP stops receiving T.38 packets, it will

 

 

 

 

wait ten seconds before switching to voice mode.

 

 

 

 

 

 

 

Coder Parameters

 

 

 

Coder

Manual or

Determines whether selection of coder is manual or

 

 

 

Auto-matic

automatic. Must be set to manual for CM managed calls.

 

 

 

 

When Automatic is selected, the local and remote voice

 

 

 

 

channels will negotiate the voice coder to be used by

 

 

 

 

selecting the highest bandwidth coder supported by

 

 

 

 

both sides without exceeding the Max Bandwidth

 

 

 

 

setting. G.723, G.729, or G.711 are negotiated.

 

 

 

 

 

 

38

Multi-Tech Systems, Inc. Avaya Communication Manager Guide

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Multi-Tech Systems 410 Out of Band, or Inband, In/Out, Fax Enable, Max Baud, Rate, Fax Volume, Jitter Value Default =