ISDN Circuits

The ISDN Circuits object is used to assign B-Channels in a Channel Group to a previously configured D-Channel. The B-Channels can be configured on either the Signaling or Bearer Interface but typically are configured on the Bearer Interface.

 

ClientView Pane

IMG EMS > Routing Configuration > Channel Group > ISDN Group  > ISDN Circuits

SC_ISDN_Circuits.png

 

Maximum Objects

480 B-Channels per ISDN Group

 

Related Topics and Dependencies

The ISDN Circuits are configured on existing Bearer or Signaling Spans/Channels. Verify the Spans/Channels configured are available and not being utilized by other functions. The Interfaces correspond to the Spans/Channels configured.

Configure ISDN

 

Field Descriptions

IMG Interface

Select from drop down menu whether the B-Channels will be configured on a Bearer Interface/Span or a Signaling Interface/Span. The Default is to configure B-Channel on the Bearer Interfaces/Spans.

 

Start Interface Offset

Select from a drop down menu the Starting Interface Offset/Span. The B-Channel can be configured on either the same span that the D-Channel got configured on or a completely different span.

 

Start Channel

Select from a drop down menu the first channel that will get configured as a B-Channel.

 

End Interface Offset

Select from drop down menu the last Interface Offset/Span that the B-Channels will get configured on.

 

End Channel

Select from a drop down menu the last channel that will get configured as a B-Channel.

 

Start Facility Number

The Facility number of the first Span in the group. Note that Facility 0 is always assigned to the Span that contains the Primary D channel and Facility 1 is always assigned to the Span that contains the Secondary D channel, if one exists, irrespective of the Start Facility Number selected here.

 

Monitoring Fields

Trunk Type

Informational Field - The trunk type of this Circuit Group. T1 or E1 will be displayed.

 

B Channel Count

Informational Field - The number of B Channels in this circuit group.

 

Channel Count

Informational Field – This is the total number of channels, including D-Channels, configured in this circuit group.