
340 Chapter 33 Private networking: MCDN over PRI and VoIP
N0060606N0060606
• DND on busy is turned on.
• prime set is also busy, with no free key, and with DND turned on.
• Attendant capability is high (2), and higher than either the target telephone or the caller the
target telephone owner is busy with.
Only post-dial break-in is supported by MCDN:
1 Attendant dials destination number.
2 If a busy tone is heard, the attendant presses the BKI button.
Attendant is given access to the conversation.
You can set a level of priority that will determine if a telephone will allow an attendant to break in.
This is referred to as setting the Intrusion level. Use the following rules to configure the break-in
feature.
• Set the Intrusion level for each telephone (under Capabilities on the DN record). Refer to
“Capabilities and Preferences - Capabilities tab” in the BCM 4.0 Device Configuration
Guide (N0060600).
How the intrusion hierarchy works:
— Break-in is allowed if Attendant telephone is High and caller telephone is Medium.
— Break-in is not allowed if Attendant telephone is Medium and caller telephone is high.
MCDN networking checklist
The following points provide a quick check for the system prerequisite settings for MCDN
networking.
Select the dialing plan to be used:
• UDP (Universal Dialing Plan)
— DNs on the same node are dialed directly.
— DNs on other nodes are called by first dialing an Access Code and an ESN.
— Each node has its own ESN.
• CDP (Coordinated Dialing Plan)
— DNs on all nodes are dialed directly.
Ensure the following common programming is configured:
•BCM Programming
— Configure the system DN length to match the DN length used in the rest of the private
network.
— Program the private Route: Type=Private, Dial=None.
— Program the public Route: Type=Public, Dial=None.
— Enable the MCDN Supplementary Services; TRO=selected, ICCL=selected,
TAT=selected.
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