If you are installing the fax machine to work with a PBX:; Custom Features on Your Phone Line; Connecting an External Telephone Answering Device (TAD)- Page 28

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C H A P T E R T W O

If you are installing the fax machine to work with a PBX:

1

It is not guaranteed that the unit will operate correctly under all circum-
stances with a PBX. Any cases of difficulty should be reported first to
the company that handles your PBX.

2

If all incoming calls will be answered by a switchboard operator, it is
recommended that the Answer Mode be set to MANUAL. All incoming
calls should initially be regarded as telephone calls.

3

The unit may be used with either pulse or tone dialing telephone service.

Custom Features on Your Phone Line

If you have telephone services (offered by your telephone company) on your
phone line, please see Telephone Service, chapter 9.

Connecting an External
Telephone Answering Device (TAD)

Sequence

You might choose to connect an additional answering system. When you
have an external TAD on the same telephone line as the fax machine, the
TAD answers all calls. The fax machine “listens” for fax calling (CNG)
tones. If it hears them, the fax machine takes over the call and receives the
fax. If it doesn’t hear CNG tones, the fax machine lets the TAD continue
playing your outgoing message so your caller can leave you a voice
message.

The TAD must answer within four rings (the recommended setting is two
rings). The fax machine cannot hear CNG tones until the TAD has answered
the call, and with four rings there are only 8–10 seconds of CNG tones left
for the fax “handshake.”  Make sure you carefully follow instructions in this
manual for recording your outgoing message. We do not recommend using
the toll-saver feature on your external TAD if it exceeds 4 rings.