OKIDATA OF2200, Service Manual

Page: 409 / 410

Page: 208
Service Guide OF2200/2400/2600
Chapter C Installation of Options
C.3 TELEPHONE ANSWERING DEVICE (TAD) INTERFACE
(Pertains to the Okifax 2200 only)
C.3.01 General Information
The Telephone Answering Device (TAD) Interface allows Okifax units to share the same phone line with a
telephone answering device. The Okifax unit and answering device work together to process incoming
voice and fax calls, each to their own function. For the TAD Interface to function properly, the following
User Functions must be set:
1. TAD Mode (Technical Function #45) must be enabled. The default setting is OFF.
2. Ring Response Time (User Function #24)(User Function #25 when optional High Capacity Cassette is
installed) should be set to "1" ring. This is the default setting.
3. Tel/Fax Timer (User Function #10) should be set to 35 seconds. This is the default setting.
To properly connect the Okifax unit to an answering device and phone line, the physical hook-up must be
as follows:
1. The line cord from the RJ11C jack should be connected to the
jack marked "Line" on the Okifax unit.
2. The answering device must have its line cord connected to the jack
marked "Tel" on the Okifax unit.
NOTE:
A single line telephone may then be connected to the jack marked "TEL" or "PHONE" on the answering
device, although this is optional.
Once the physical connections have been established and the function settings programmed, the TAD
Interface functions as follows:
1. When an incoming call is received, the Okifax will monitor the line for 35 seconds (Tel/Fax Timer setting
determines this period). The timing period begins when the first incoming ring is detected. During this time,
the Okifax unit listens for two things, and acts on them as follows:
(a) CNG (Calling tone) from a remote fax unit. This 1100 Hz tone is sent by most facsimile units that dial
automatically. The Okifax unit will seize the line from the answering device and begin automatic reception
if the CNG tone is detected.
(b) The Okifax unit waits for the answering device to disconnect the line. Once the Okifax unit senses that
the answering device has dropped the line, it begins automatic reception.
EXPLANATION:
Normally, the answering device will answer an incoming call and play its announcement. When the
answering device disconnects the line, the Okifax unit will seize the line and attempt automatic reception.