Nortel BCM 3.7 Manual page 416

416 Using Answer DNs
The portable handsets do not have answer buttons, but you can assign a single Answer DN to each
handset. If you want to share a portable telephone among users, use the Call Forward feature to
temporarily call forward a desk telephone DN to the handset.
Warning: legacy DECT system security notice: Ensure that your DECT handset is set
to answer calls manually. Otherwise, if a call is forwarded to the handset with appearance
only, the handset will answer the call with no indication to the user that the line is open.
Doorphone note: Before installing doorphone hardware, ensure that you delete any lines, line
pools, or answer DNs assigned to the DN record you plan to use for the doorphone.
Hunt group note: A linear Hunt group that has defined an overflow telephone does not support
having the overflow telephone assigned as an Answer DN to any hunt group member. If this
occurs, the Answer DN will not ring at the hunt group telephone when an overflow condition
occurs.
Autodial function: Answer DNs can also act as an internal autodial link to the assigned telephone.
The answer DN must be idle for this feature to work. That is, there must be no active indicator
showing beside the button.
The system still sees the key as an Answer DN, and any key press still interacts with other features
in that way. Therefore, even though you are making an internal call, any other autodial actions do
not occur. As well, none of the autodial visual prompts occur. That means that the button will still
only prompt if a call is alerting at the other telephone, based on the answer key level assigned to
the system. Refer to
You can program both an Answer DN and an autodial key for the same DN on the same telephone.
N0008589 3.3
"Answer key levels" on page 469.