User's Manual
Avaya Branch Gateway Manager 10.0 Page 206
15-601011 Issue 29r (Friday, November 02, 2012)B5800 Branch Gateway
5.4.4.1 PRI Line
Usability
· Mergeable: These settings are not mergeable. Changes to these settings will require a reboot of the system.
Configuration Settings
· Line Number
This parameter is not configurable; it is allocated by the system.
· Line Sub Type:
Select to match the particular line type provided by the line provider. E1 PRI trunks support ETSI, ETSI CHI, QSIG A
or QSIG B.
· ETSI CHI is used to send the channel allocation ID (CHI) in the call setup signalling. This is a request to use a
particular B-channel rather than use any B-channel allocated by the central office exchange.
· Card/Module:
Indicates the card slot or expansion module being used for the trunk device providing the line. 1 to 4 match the slots
on the front of the control unit from left to right. Expansion modules are numbered from 5 upwards, for example
trunks on the module in Expansion Port 1 are shown as 5.
· Port:
Indicates the port on the Card/Module above to which the configuration settings relate.
· Network Type: Default = Public.
This option is available if Restrict Network Interconnect (System | Telephony | Telephony ) is enabled. It
allows the trunk to be set as either Public or Private. The system will return number unobtainable indication to any
attempt to connect a call on a Private trunk to a Public trunk or vice versa. This restriction includes transfers,
forwarding and conference calls.
· Telephone Number:
Used to remember the external telephone number of this line to assist with loop-back testing. For information only.
· Channel Allocation: Default = 30|1.
For lines set to ETSI CHI, this option allows the system to select the default order in which channels should be used
for outgoing calls. Typically this is set as the opposite of the default order in which the central office exchange uses
channels for incoming calls.
· Incoming Group ID: Default = 0, Range 0 to 99999.
The Incoming Group ID to which a line belongs is used to match it to incoming call routes in the system configuration.
The matching incoming call route is then used to route incoming calls. The same ID can be used for multiple lines.
· Outgoing Group ID: Default = 0, Range 0 to 99999.
Short codes that specify a number to dial also specify the line group to be used. The system will then seize a line with
a matching Outgoing Group ID. The same ID can be used for multiple lines.
· For lines set to the Line Sub Type of ETSI CHI, the Incoming Group ID is set as part of the individual channel
settings.
· Prefix: Default = Blank.
The prefix is used in the following ways:
· For incoming calls
The ISDN messaging tags indicates the call type (National, International or Unknown). If the call type is unknown,
then the number in the Prefix field is added to the ICLID.
· For outgoing calls
The prefix is not stripped, therefore any prefixes not suitable for external line presentation should be stripped using
short codes.
· National Prefix: Default = 0
This indicates the digits to be prefixed to a incoming national call. When a number is presented from ISDN as a
"national number" this prefix is added. For example 1923000000 is converted to 01923000000.
· International Prefix: Default = 00
This indicates the digits to be prefixed to an incoming international call. When a number is presented from ISDN as an
"international number" this prefix is added. For example 441923000000 is converted to 00441923000000.
· TEI: Default = 0
The Terminal Equipment Identifier. Used to identify each Control Unit connected to a particular ISDN line. For Point to
Point lines this is typically (always) 0. It can also be 0 on a Point to Multi-Point line, however if multiple devices are
sharing a Point to Multi-Point line it should be set to 127 which results in the exchange deciding on the TEI's to be
used.
· Number of Channels
Defines the number of operational channels that are available on this line. Up to 30 for E1 PRI, 23 for T1 PRI.
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