ADTRAN ISU 2X64 user manual Setting Answer Tone

Chapter 6. Configuration

Hang up line command or answered using the Answer Call command. (These commands are found under the Dial branch of the menu tree. See Front Panel Dialing Options on page 63.)

Enabled

When Enabled is selected, the incoming call is answered. If that call is a BONDING call and requires two B channels, the second call is answered. The port assigned to that second SPID-LDN pair is disabled during the duration of the BONDING call.

Dump all calls

When Dump all calls is selected, the ISU 2x64 does not accept any incoming calls. This keeps the line clear for outgoing calls.

Setting Answer Tone

Answer tone is configured separately for both DTE#1 and DTE#2. Using the front panel, select the appropriate DTE with either arrow key and press Enter. (See Figure 6-9.) When using a VT 100 terminal, select the option number corresponding to the appropriate DTE and press Return.

The Answer tone option enables the transmission of a modem answer tone at the start of voice and audio calls. The purpose of this tone is to disable echo suppression for echo cancellation on the circuit in order to get a clear digital circuit. This may be nec- essary on some long distance circuits. The specifics of the tone are 4 seconds, 2100 Hz at a -10 dB level with phase reversals every 475 ∝s.

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