
Chapter 28 Dialing plan: System settings 313
BCM 4.0 Networking Configuration Guide
Received number notes
• If you change the received number length for your system, the Public number entry for
the target lines will clear if the new received # length is less than the number entered in
this field.
• If the new received number length has more digits than the number entered in the target
lines Public Number field, the entry remains, but does not update to the new DN length.
• A private OLI is automatically assigned to the DNs if the DN length and the Received
number length are the same. If either changes so that they are not the same, the private OLI
field is cleared or not assigned (PBX template).
Warning: Increasing the DN length affects other areas of the system:
If the DN length change creates a conflict with the Park prefix, external line access code,
direct-dial digit, or any line pool access code, the setting for the prefix or code changes to
None, and the corresponding feature is disabled.
Optional applications affected by DN length changes:
Voice mail and Contact Center applications are reset if you change the DN length after
these services are installed.
Warning: If your system is running with a PBX telephony template, the Public and
Private received number length are set to 3 (digits) at start-up. Increasing the DN length
after system startup does not change these digits, so you will need to manually change the
Public and Private received number length.
Private OLIs are automatically assigned to the DN records if the DN length and the Private
received number length are the same. If this changes, the Private OLIs are cleared, or are
not assigned (PBX template).
Network note: If your system is part of a private network, ensure that you confirm the
dialing plan for the network before changing this length. If you change the length, ensure
that you check all DN-related settings after the change.
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