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• Ribbon recommends that no more than 24 FXS ports are assigned to an Analog CAS Signaling Group.
  
• If FXS Hotline is enabled, the maximum number of ports assigned to a CAS Signaling Group is limited to 24 ports. On an SBC 2000 (which supports 48 FXS ports), two CAS signaling groups are required to cover all 48 ports.
   

Specifies whether or not this CAS Signaling Group is applied to an analog or digital line.

Specifies the admin state of the Signaling group.

• Enable: Enables the signaling group.
• Disable: Disables the signaling group.
• Drain: When Drain is selected, calls that are currently up remain connected. However, new calls and forking are not allowed for the Signaling Group. This allows all the calls to be drained from the SG.

Specifies the CAS Signaling Profile to use with this CAS Signaling Group.

Specifies whether or not Supplementary Services are supported in this CAS SG. Shown only when the specified CAS Signaling Profile is set to a Loop Start Signaling Profile.

Species the format of call information sent and received using E&M as the CAS Signaling Profile (E&M Caller ID). Select from the drop down list. Valid entries:

• Called Party. Called Party number, default configuration where E&M Caller ID feature is not supported.
• Calling-Called. Calling party number is followed by Called party number. Example:<Start Digit> <Calling Party number> <Delimiter Digit> <Called Party number> <End Digit>.
• Called-Calling. Called party number is followed by Calling party number. Example:<Start Digit> <Called Party number> <Delimiter Digit> <Calling Party number> <End Digit>.

This field is available only when Line Type is set as Digital and CAS Signaling Profile is set as E&M. (Ensure E&M is configured as a CAS Signaling Profile. See Creating and Modifying E&M CAS Profiles.)

Specifies the first digit of call information sent or received. Select from the drop down list. Valid entry: A, B, D, # or *. Default entry: *.

This field is available only when Call Information Format is set to Calling-Called or Called-Calling.

Specifies the call information digit separating calling and called numbers. Select from the drop down list. Valid entry: A, B, D, # or *. Default entry: *.

This field is available only when Call Information Format is set to Calling-Called or Called-Calling.

Specifies the last digit of call information sent or received. Select from the drop down list. Valid entry: A, B, D, # or *. Default entry: *.

This field is available only when Call Information Format is set to Calling-Called or Called-Calling.

Specifies the Caller ID Type for this signaling group. This field is visible only when the Line Type is set to Analog.

Typical Caller ID Types by Country

Not all countries are standardized on which Caller ID Type they use. This list contains suggested types for certain countries, and some countries use multiple types. If the Caller ID Type listed here for your country, you may need to contact your local service provider.

Specifies the DTMF tones used as the caller ID start delimiter. This attribute is applicable only if the signaling profile is of type FXS or FXO, only if the Line Type is Analog, and only if the Caller ID Type iss DTMF, DTMF No Ring, or DTMF Reverse Battery.

Specifies the DTMF tones used as the caller ID end delimiter. This attribute is applicable only if the signaling profile is of type FXS or FXO, only if the Line Type is Analog, and only if the Caller ID Type iss DTMF, DTMF No Ring, or DTMF Reverse Battery.

Specifies when to play the ringback tone on the channel.

The Calling ID Privacy Signaling field can contain up to five characters that are sent in place of the calling party number in cases where the outgoing call is marked as blocked or restricted. The range of characters configured for privacy signaling is limited when it is configured for DTMF or FSK. See the following table for details.

Used to enable/disable the Call Forward feature at the Signaling Group level. The Call Forward feature allows a phone connected to an FXS port to forward calls to another telephone number. Available options: Enabled or Disabled. Once this field is enabled, the Call Forwarding Activate DTMF and Call Forwarding Deactivate DTMF fields become visible. To enable at the channel level, you must activate at the Assigned Channel Table, Assigned Channels - Field Definitions, or activate through the physical phone, How to Operate Call Forward on Telephone. Once Call Forward is activated and a keycode is configured, you must configure a route on the SBC to route the forwarded number. If a route is not provided, the call will fail.

Call forwarding is supported for Analog FXS only.

The SBC supports a basic Unconditional Call Forward, but it allows various characters to be configured for keycodes. This includes the '#' character, which is defined in the SBC as an End of Dial digit. In order to determine if an entry is part of a Call Forward activate or deactivate keycode, End of Dial behavior is ignored for the first 6 characters dialed. If the SBC finds that the digits do not match the call forward keycode, it will parse the number backwards to the last '#' (if there is one) and remove it before sending the number for routing. This means that '#' will not stop the inter-digit timer and immediately send the number during collection of the first 6 digits.

In order for the feature to be available at the channel level, ensure the Call Forwarding feature is enabled under CAS Protocol. See #Call Forwarding Feature.

Code used to activate the Call forward feature on a specific FXS port. This field is configurable up to a 6 character combination. Default entry: *72.

Code used to deactivate the Call forward feature on a specific FXS port. This field is configurable up to a 6 character combination. Default entry: *73.

Specifies the channel hunting method. Not Applicable when Direction is Incoming.

• Standard: This option assigns first available low numbered channel.
• Reverse Standard: This option assigns last available high numbered channel.
• Round Robin: This option assigns channels based on next available from low numbered to high numbered.
• Least Idle: This option chooses channels based on the least idle channel.
• Most Idle: This option chooses channels based on the most idle channel.
• Own Number: This option chooses it's own channel if the number dialed belongs to it.

Specifies the direction of calls handled by this signaling group.

Specifies the tone table to use with this signaling group. The Tone Table field is visible only when the Direction attribute is set to Bidirectional or Inbound.

Specifies the Action Set to use with this signaling group. Available only when the Direction attribute is set to Bidirectional or Inbound.

When an Action Set Table is specified (not "none") it takes precedence over Route Table.

Specifies which Routing Table to use with this Signaling Group. The Call Routing Table field is visible only when the Direction attribute is set to Bidirectional or inbound.

In the event of a "No Channel/Circuit available" release cause code, the specified cause code will be sent to the relevant protocol module. For more information see the list of Cause Codes.

NOTE: This attribute relates only to Inbound calls on the Signaling Group where applied.

Specifies the interval of time, in milliseconds, after an call is initiated that the Ribbon SBC 1000/2000 waits for a call to connect before terminating the incoming call.

For a CAS Signaling Group using E&M/Loop Start signaling (T1/Analog) or CAS R2 (E1), a maximum of 48 channels can be assigned to the signaling group.

For E1, limit channels to 30 (to not go over the maximum 48 channels). Otherwise, the following will occur:

• The span (48 channels) is split across two signaling groups. 
• When the limit of 48 channels in the span is met, 18 channels from one of the signaling groups must be deleted before a new signaling group can be created.

Specifies the DS1 port from which channels will be assigned to this SG. This field is only visible when the Line Type is specified as Digital.

Specifies the method by which to assign ports to analog cards or channels to digital ports. Available options: Digital (All Channels, Single Channel, or Range of Channels), Analog (All Ports on a Card or Single Port). 

Specifies the analog card to which ports will be assigned. This field is only visible when the #Line Type is specified as Analog.

Specifies a specific phone number to assign to a channel.

Enables a user or device to seize an FXS line on the SBC and have it automatically routed to a pre-configured destination number. If enabled, this number is configured in the Hotline Number field. Valid entries: Yes or No.

Number to which an FXS line is automatically routed. Available only if Enable FXS Hotline is set to Yes.

Indicates whether the Call Forwarding feature is activated on that channel. Call Forward allows a phone connected to an FXS port to forward calls to another telephone number. Available options: Yes or No. An activation at the physical phone level automatically activates the feature in this field for the applicable channel

Specifies the telephone number in which forwarded calls are sent. Available only when Call Forwarding Activated is set to Yes. An activation at the physical phone level automatically activates the feature in this field for the applicable channel.