Nortel BCM50 Configuration Manual page 58

58 Chapter 2 System telephony networking overview
Call Offer
Call Offer over DPNSS 1 allows a calling party to indicate to the wanted party that there is an
incoming call available, even though there is no answer button available to present the call on the
telephone. The intended recipient can ignore, accept, or decline the offered call. Call Offer is
useful in increasing the call-coverage capability of a BCM system, and helps to lift the network
processing load. It is a receive-only capability on BCM; incoming calls are initiated at another
PBX system on the DPNSS 1 network.
An example of Call Offer in use is an operator or attendant who has a number of calls coming in at
once. The operator can call offer one call and move to the next without waiting for the first call to
be answered.
Call Offer Displays
When a Call Offer is made by the originating exchange, the target telephone displays a message,
and a tone is heard. When an offered call arrives on telephones with line display, the user sees
XX...X wtng if the calling party ID is available and CLID is enabled. If CLID is not available
or CLID is disabled, Line XXX waiting appears (the line name associated with the call). If
there are more than 11 digits in the incoming number, only the last 10 will display.
If Call Queuing is programmed for the system, the display shows Release Line XXX.
This is the line name of the highest-priority queued call if it is an offered call.
Restrictions by telephone type
• model 7000 telephone — associated LED or LCD flashes, and a tone is heard (model 7000
phones, supported in Europe only.)
• ATA2/ASM8+—Call Offer is supported as a Camp On feature, and a tone is heard
• ISDN—not supported
Note the following general conditions and restrictions:
• Clear the DND on busy check box (DN ##/Capabilities) for a telephone to accept Call Offer.
• If CF on busy is programmed for the telephone, Call Offer is not accepted.
• The target line for the telephone must be set to: If busy: busy tone, which is the default.
• Call Offer does not work if sent over Manual answer lines. It is recommended that the lines be
left at the default: Auto.
User actions
The party receiving a Call Offer has three choices:
• Ignore it. After a programmed time interval, the Offer request is removed.
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