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titleRibbon 2000 CAS Signaling Group Guidlines
  • 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
For the Sonus SBC 2000, each Analog
  • CAS Signaling Group is limited to
a maximum of 24 FXS ports.
  • 24 ports. On an SBC 2000 (which supports 48 FXS ports), two CAS signaling groups are required to cover all 48 ports.
     

To create or modify an existing CAS Signaling Group:

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  1. From the Create Signaling Group drop down box at the top of the Signaling Group Table, select CAS Signaling Group.

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    1Create CAS Signaling Group

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CAS Signaling - Field Definitions

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titleJump to Field Definition

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Line Type

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

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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.

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End Digit

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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.

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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.

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Play Ringback

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Specifies when to play the ringback tone on the channel.

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  • Call Forwarding is automatically disabled.
  • The Call Forwarding Feature field is hidden.

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The Call Forwarding feature enables a phone connected to an FXS port to forward incoming calls to another configured telephone number. The SBC supports unconditional call forward on an individual port basis. Call Forward is activated/deactivated on a port with configured specific service codes, accompanied by the forward number. Once the user enters the configured keycode and forward telephone number, all outgoing calls to the port will then be redirected to the forwarding number. When the outgoing call routes to a port that is forwarded, the phone on that port generates a short ring.

In North America, the NANP defines *72<forward number> for activation and *73 for deactivation, but the SBC enables you to configure any 6 character combination for activation and/or deactivation. The SBC enables a keycode to have a minimum length of 3 characters and a maximum of 6; this is based on what is commonly used today.

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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.

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Call Forwarding Feature

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Activate through a Telephone

The Call Forward feature can be initiated with the following steps:

  • Lift the handset to the port (in which calls will be forwarded) and enter the activate keycode + forwarded number, followed by the '#' key on the telephone.
  • A confirmation tone (fast beep) indicates a successful Call Forward. A congestion tone (busy tone) indicates call forward failed.
  • An activation at the physical phone level automatically activates the feature for the applicable channel in the Assigned Channels table. See Assigned Channels - Field Definitions.

Deactivate through a Telephone

  • Lift the handset connected to the port in which calls are being forwarded (that requires deactivation) and enter the deactivate keycode.
  • A confirmation tone (fast beep

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  • ) indicates a successful Call Forward deactivation. A congestion tone (busy tone) indicates call forward has not been deactivated.

 

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Activate on a Channel through the Channel Table

The Call Forward feature can be activated for a specific channel through the Assigned Channels table as follows:

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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.

  1. In the WebUI, click the Settings tab.
  2. In the left navigation pane, go to Signaling Groups.
  3. Click the expand (

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  1. Image Added) icon next to the entry you wish to modify.
  2. At the Assigned Channels table, click on the

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  1. Image Added icon.
  2. From Channel Selection Method, select Single Port.
  3. From Call Forward Activated, select Yes.
  4. In Call Forwarding Number box, enter the number to which the call will be forwarded.
  5. Click Apply.

Deactivate on a Channel through Channel Table

The Call Forward feature can be deactivated for a specific channel through the Assigned Channels table as follows:

  1. In the WebUI, click the Settings tab.
  2. In the left navigation pane, go to Signaling Groups.
  3. Click the expand (

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  1. Image Added) icon next to the entry you wish to modify.
  2. In the Assigned Channels table, click on the (

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  1. Image Added) icon next to the entry in which you want to deactivate Call Forward.
  2. From Call Forward Activated, select Disable.
  3. Click Apply.

 

Call Forwarding Activate DTMF

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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.

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Action Set Table

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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.

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

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Specifies a specific phone number to assign to a channel.

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Enable FXS Hotline

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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.

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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.

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