NEC Aspire Manual page 22

Section 2: Components
Door Box — P/N 92245
Headsets
14
The Door Box is a self-contained Intercom unit typically used to monitor an
entrance door. A visitor at the door can press the Door Box call button (like a door
bell). The Door Box then sends chime tones to all extensions programmed to
receive chimes. The Door Box is weather-tight, but where possible, should have
some coverage from the weather. A 2PGDAD Module is required for this feature.
Each 2PGDAD module audio output can optionally support two analog Door Boxes. In addition,
you can connect each circuit's control relay to an electric door strike. This allows an extension user
to remotely activate the door strike while talking to a visitor at the Door Box. The control relays are
normally open. The NTCPU also provides 1 relay. This relay is deÞned as relay '0' in program-
ming. The relays on the 2PGDAD modules are numbered 1-8. The system can have up to four
(Aspire S) or eight (Aspire) Door Boxes.
Headsets are perfect for users who spend a lot of time on the phone. They enable users to become
more productive by freeing their hands while talking on the phone and also prevents neck strain
from trying to balance the handset between their ear and shoulder. The following modular headsets
are compatible with the Aspire system.
®
●
Polaris™ Supra Monaural, Noise Cancelling (P/N 750636)
®
● Polaris™ Supra Binaural, Noise Cancelling (P/N 750633)
● Polaris™ Supra Monaural (P/N 750632)
● Polaris™ Encore Monaural - Voice Tube (P/N 750634)
®
● Polaris™ Encore Binaural, Noise Cancelling (P/N 750635)
● Polaris Tristar - Voice Tube (P/N 750630)
● Polaris Mirage - Voice Tube (P/N 750631)
●
CT-11 Cordless Headset Telephone (P/N 730089)
CT-11 Cordless Headset Telephone (P/N 730089)
The CT-11 is a 2.4GHz cordless headset which connects to an analog port or an analog telephone
line as a stand-alone unit or to an analog port adapter (APR, P/N 0890056). When the APR is set up
as the same extension of the telephone, you can use the headset to answer and make calls using the
cordless headset. The CT-11 offers Caller ID, but only if it is connected to an analog port on an ana-
log station card. The CT-11 will not receive Caller ID if it is connected to an APA or APR adapter
(these adapters do not output Caller ID).
The number of units which can be used on the system is greatly affected by the environment. The
closer or smaller the area, the smaller the number of units which can be used. It is recommended to
start with 3 or less. If there are no conßicts between the telephones, you can try adding additional
units (up to 5 would be the recommended maximum).
When using wireless LAN, keep in mind that although there should not be a problem with interfer-
ence from WLAN's, 802.11b and 802.11g both share the same frequency as the CT-11 telephone.
In theory, the CT-11 is a narrow band high power device where as the 802.11b and 802.11g are both
wide band low power technologies. Therefore, the higher power CT-11 could disrupt the low power
device and slow the data network. There are, however, many exceptions to this (for example, if the
WLAN uses highly directional antennas, higher power relays between buildings, etc.). The CT-11
can not lock down channels, unlike the 802.11b and 802.11g.
Product Description