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Full Duplex Handsfree Cartridge Installation and Reference Card
This installation and reference card describes how to install and use the Full Duplex Handsfree (FDHF) Cartridge
(NTMN72xx) with your Phase III Avaya 3904 Digital Deskphone.
The FDHF cartridge allows simultaneous two-way communication during a handsfree telephone call.
Note: Avaya 3904 Digital Deskphone Phase III hardware is required, since design modifications were made to the
telephones to accommodate the FDHF functionality.
Connecting the
FDHF cartridge
Operating
Parameters
Install an Accessory Connection Module (ACM) (NTMN71xx) into your Avaya 3904
Digital Deskphone before you install your FDHF cartridge. The ACM provides connection
capabilities between the 3904 Digital Deskphone and the FDHF cartridge. A wall
transformer is required to connect the ACM to an electrical outlet.
To install the Full Duplex Handsfree (FDHF) cartridge:
1. Check that your telephone is a 3904 Phase III set (such as, NTMN34GA,
NTMN34TA, or NTMN34MA) by looking at the label on the back. If it is, continue to
step 2. If it is not, the FDHF cartridge is not compatible with your telephone. Contact
your system administrator for more information.
2. Insert the FDHF cartridge into the ACM. The latch should be at the top.
3. Plug the ACM wall transformer into an electrical outlet. Use only a transformer
deisgned for use with the ACM.
4. Connect the adapter plug, attached to your transformer, into the wall jack.
5. Connect the six-conductor line cord from the telephone to the adapter jack attached
to the wall transformer. Refer to Accessory Connection Module Installation Guide for
further information.
6. Verify that the FDHF cartridge is working properly. The cartridge is operating
properly when the red LED on the cartridge is flashing and when 18 segments are
displayed on the volume bar during handsfree volume adjustment. Half duplex
displays only 12 segments.
The receive audio level is attenuated during the FDHF mode while both you and the
party you are speaking with are conversing; therefore, you may notice fluctuations
in the receive volume during an FDHF call.
The FDHF cartridge can be inserted into the ACM without disconnecting the telephone line cord from the telephone wall jack. Avaya recommends that the FDHF
cartridge not be removed during an active call.
NN42370-104 1 of 3 Standard 4.01
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Full Duplex Handsfree Cartridge Installation and Reference Card
Table 1: FDHF compatibility
Analog Terminal
Adapter (ATA)
Computer
Telephony
Integration
Adapter (CTIA)
Personal
Directory
PC Utility
Meridian External
Alerter Recording
Interface (MEARI)
Full Duplex Handsfree
(FDHF)
Note 1. FDHF and ATA can be interchanged but cannot be used simultaneously.
Note 2. FDHF works with the MEARI external alerter functionality; however, the MEARI cannot be used for
recording when FDHF is in operation.
Status light
indicator
Enabling Handsfree
on an existing 3904
on the Avaya
1
No
A red LED status light located on the FDHF cartridge indicates the status of the
cartridge.
• Flashing red indicates that the cartridge is operating normally.
• Solid red indicates that the cartridge is not operating normally. Contact your
system administrator.
• Red light off indicates that there is no power going to the cartridge or the
cartridge is not operating correctly. Check the power connections to the
cartridge. If problems continue, contact your system administrator.
Prompt Response Description
REQ CHG Change a feature on an existing 3904
Yes Yes
telephone.
Yes
2
Meridian 1 for use
with the FDHF
cartridge in LD 11
TYPE 3904 Telephone type must be 3904.
Full Duplex Handsfree functionality requires a
3904 Phase III telephone.
(see Note on page 3)
CLS HFA HFA = Handsfree Allowed
HFD = Handsfree Denied (default)
Standard 4.01 2 of 3 NN42370-104
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Full Duplex Handsfree Cartridge Installation and Reference Card
Enabling Handsfree
Prompt Response Description
on an existing 3904
on the Meridian SL100 for use with the
FDHF cartridge in
Servord (see Note)
Note: If you are installing the Full Duplex Handsfree Cartridge on a 3904 that already has Handsfree enabled, you
do not need to make any changes in LD 11 on the Avaya Meridian 1 or in Servord on the Meridian SL-100.
SO: Chf Change a feature on an existing 3904
telephone.
OPTKEY: 1 Enter the key number assigned to the Primary
DN.
OPTION: hndsfree Enter “hndsfree” for the Handsfree option.
HANDS_FREE y Enter “y” for yes.
NN42370-104 3 of 3 Standard 4.01
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