Black Box 120H - Manual (Page 21)

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LINE SHARE 120H
*To assist the Line Share 120H in automatically transferring calls that
produce a CNG tone, you should leave a four-second silent period at the
beginning or end of your answering machine announcement message.
To accommodate auto-dial faxes that do not produce CNG tones, the Line
Share 120H monitors the line 20 seconds after a call is answered on the TAD
port. If the Line Share 120H determines that a caller is not leaving a message
on your answering machine during the next five-second period, the Line
Share 120H transfers the call to the FAX/MODEM port.
To accommodate these timing parameters, your outgoing message should
be no less than 10 seconds, and no longer than 15 seconds.
NOTE
Single-cassette answering machines are not recommended for use with
the Line Share 120H because of timing limitations of these types of
machines.
NOTE
If calls are being transferred to the FAX/MODEM port when a caller is
leaving a message, you may want to instruct the caller (in your
answering machine announcement message) to press the * key from a
tone phone to leave an uninterrupted message.
4.5 Retrieving Answering-Machine Messages from a Remote Location
To disable the Line Share 120H and retrieve your answering-machine
messages, follow these steps:
1. Dial your phone number and wait for the answering machine to answer
the call.
2. After your answering machine answers the call, press * * on your tone
phone.
3. Follow the remote-retrieval procedures for your answering machine.
4. After retrieving your messages, hang up. The Line Share 120H resets for
the next call.