Specifications

Net-2000™ VCU Users Manual

Version 4.0, December, 2013

IP Mode

4.10.2 Output Gain

The output gain setting for the voice codec can be set by the user, however, the default values should be sufficient

for most applications. The Output gain can be set to -3dB or -6 dB.

Figure 23 Output Gain Selection

4.10.3 2-Wire Wait on Ring

The 2-Wire wait on ring feature allows the Net-2000™-VCU to be ready to answer an incoming call from a standard

POTS line. When selected the Net-2000™-VCU will not automatically open the POTS line when the 2-Wire voice

source is selected. This provides the benefit of freeing up the phone line when the Net-2000™-VCU is not active.

4.10.4 DTMF Panel

The NET-2000™-VCU is capable of detecting, transmitting, and synthesizing DTMF tones. DTMF features are

only enabled in VOIP Mode with vocoders that support DTMF Tones. Selecting the “OPEN” button next to the

DTMF Panel on the main navigation menu brings the operator to the Status page and opens the DTMF pop-up

window (see Figure 24 DTMF Key Pad).

The

DTMF pop-up window allows the operator to send DTMF tones across the channel. The operator can enter the

tones by selecting the digits in the pop-up window or by selecting the DTMF digit window and entering the numbers

using the keyboard. The operator can select how the tone should be generated and then can select send to send the

information the Net-2000™-VCU.

The frequencies for the DTMF tones are shown in Table 6 DTMF Data

Digit

DTMF

Frequency 1 (Hz)

DTMF

Frequency 2 (Hz)

0 1336 941

1 1209 697

2 1336 697

3 1477 697

4 1209 770

5 1336 770

6 1477 770

7 1209 852

8 1336 852

9 1477 852

A 1633 697

B 1633 770

C 1633 852

D 1633 941

* 1209 941

# 1477 941

Table 6 DTMF Data

(Subject to Change) Page 26

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