
156 System parameters reference
Nortel Business Communications Manager 5.0
Configuration — System
NN40170-501 02.04 Standard
September 2009
Copyright © 2009, Nortel Networks
NSF
Extension
None, WATS, ALL PRI
The Network Specific Facilities (NSF) information element is used to request a particular
service from the network. Settings are based on the type of switch to which the line
connects.
Suggested settings:
DMS-100/250: NONE
Siemens ESWD, Lucent 5ESS: WATS
GTD5, DMS-10: ALL
If you select NONE, the NSF extension bit is not set for any service.
If you select WATS, the NSF extension bit is set for unbanded OUTWATS calls.
If you select ALL, the NSF extension is always set for all CbC services.
Appears only for NI protocol.
Protocol
type
User, Network PRI
If you select SL-1 protocol, an additional setting, Protocol type, appears.
SL-1 protocol is a private networking protocol. Use this protocol to designate a BCM 5.0
node as a Network (controller). The default setting is User (client). In public network
configurations, the CO is generally considered the Network side or controller.
Applies to SL-1 protocol only.
B-channel
selection
sequence
Ascending
Sequential
Descending
Sequential
None
PRI
Defines how B-channel resources are selected for call processing.
Answer
timer
1, 2, 3, 4, or 5 sec. E&
M
PRI
Set the minimum duration of an answer signal before a call is considered to be answered.
Disconnect
timer
60, 100, 260, 460,
or 600
milliseconds
Loo
p
T1
Specify the duration of an Open Switch Interval (OSI) before a call on a supervised
external line is considered disconnected. This setting must match the setting for the line
at the central office (CO).
You must enable disconnect supervision by changing the Line Trunk mode attribute.
Under the Telephony Services sub-heading, choose Lines and Line/trunk Data.
Attribute Value Module/line type
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