S0 Line

Last Updated : Mar 29, 2022 |

Navigation: Line | S0 Line

The following settings are not mergeable. Changes to these settings require a system reboot.

  • Line Sub Type

  • Network Type

The remaining settings are mergeable.

Field

Description

Line Number

This parameter is not configurable. It is allocated by the system.

Card/Module

Indicates the card slot or expansion module being used for the trunk device providing the line.

For IP500 V2 control units: 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.

Line Sub Type

Default = ETSI Select to match the particular line type provided by the line provider.

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 busy 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.

Due to the nature of this feature, its use is not recommended on systems also using any of the following other system features:  multi-site networks, VPNremote, application telecommuter mode.

Telephone Number

Used to remember the telephone number of this line. For information only.

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.

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 = 1. Range 0 to 99999.

When a short code specifies a number to dial, the IP Office will seize an available line from those available with a matching Outgoing Group ID.

In a Server Edition/Select network, the Outgoing Group ID used for lines to a system must be unique within the network.

Reserved Group ID Numbers

  • 0 - In a Server Edition/Select network, the ID 0 cannot be used.

  • 90000 - 99999 - Reserved for system use (not enforced).

    • 96666 - Use for ACO lines.

    • 98888 - For IP Office deployed in an Enterprise Branch environment, reserved for the SM line.

    • 99001 - 99148 - In a Server Edition/Select network, reserved for the IP Office lines from the primary and secondary servers to each expansion system in the network.

    • 99998 - In a Server Edition/Select network, reserved for the IP Office lines to the secondary server.

    • 99999 - In a Server Edition/Select network, reserved for the IP Office lines to the primary server.

TEI

Default = 0

Not used. The Control Unit will ignore any entry.

Number of Channels

Default = 2

Defines the number of operational channels that are available on this line. 2 for BRI and up to 30 for PRI - depending upon the number of channels subscribed.

Outgoing Channels

Default = 2

This defines the number of channels available, on this line, for outgoing calls. This should normally be the same as Number of Channels field, but can be reduced to ensure incoming calls cannot be blocked by outgoing calls.

Voice Channels

Default = 2

The number of channels available for voice use.

Data Channels

Default = 2

The number of channels available for data use. If left blank the value is 0.