Nortel BCM50 Configuration Manual page 223

• If the outgoing call is designated as public, the system checks the beginning of the string for a
destination code that routes to a PSTN or an MCDN trunk. If the call routes to a public route,
the system checks the public dialing table to ensure that the dialout string has legitimate
leading digits and is the correct length. If the call routes to an MCDN trunk, the call is passed
as dialed, minus the private networking codes. The call will pass through the system until the
system with the matching destination code receives it, at which point it will be sent through the
local PSTN of that system.
How the system identifies the call depends on the type of trunk chosen for the route. Refer to the
table below.
Dialing plan setting
MCDN trunks send private calls in this way:
None
UDP
CDP
DMS-100/DMS-250/ETSI-QSIG trunks send private calls in this way:
None
UDP
CDP
Outgoing public calls routing
Outgoing public calls from within the system typically have the routes set to Public. Refer to
"Configuring call routing" on page
public called number length is based on the Public DN lengths table in the Public networks dialing
plan.
NPI/TON
Private/Subscriber
Private/UDP
Private/CDP
Private/Subscriber
Private/Subscriber
Private/Subscriber
234. The NPI/TON gets sent as Unknown/Unknown. The
Chapter 24 Dialing plans
Private called number length based on
Private DN length (set on Private Network
panel)
private access code + home location code
(LOC) + private received digits
private received digit
Private DN length (set on Private Network
panel)
private access code + home location code
(LOC) + private received digits
private received digit
Networking Configuration Guide
223