Base Variant Parameter Pane (CAS)

Description:

In CAS there are four pre-configured .xml files that can be imported through ClientView. The Base Variant Parameter Pane is the top level object pane when selecting one of these four pre-configured files. The Base Variant Parameter Pane is where you would define the CAS Variant. Information such as Variant Name, Variant Type, Variant ID are just a few of the fields that need to get configured.

Accessing This Pane:

Dialogic IMG EMS -> Signaling Variants -> Signaling Variant -> Import Variant Table

Maximum Objects:

There are 4 pre-configured variants:

FGB

FGD

E1DNANICATOV

E1_DNANICAT

Related Topics:

Signaling Variant

Configuring CAS

Previous Configuration Required:

Signaling Variant

 

NOTE: If a CAS variant is assigned to a channel group, the variant cannot be deleted.

 

Default ClientView Pane (T1 Signaling) --> FGB and FGD:

SC_Base_Variant_Pane_FGB_MFR1.png

 

 

Field Descriptions:

Variant Name:

The Variant name given by you. When importing a Variant Table, this is fixed to the name of the Variant Table which was imported.

 

Variant Type:

The Variant Type is automatically populated with the CAS (Channel Associated Signaling) Variant.

 

Base Variant:

Choose from drop down menu whether T1 or E1 signaling will be used. When importing a Variant Table and depending on which Variant Table is imported this will be either T1 Signaling or E1 signaling. This field is fixed when importing a Variant Table.

 

Variant ID:

Choose from drop down menu the ID that will be given to this Variant. When importing a table the Variant ID is fixed depending on which Variant Table is selected. In this example the file FGB_MFR1 is set to ID:2.

 

Trunk Type:

The Trunk Type is fixed at E+M Signaling when importing the FGB_mfr1 Variant Table. If you are creating your own CAS Variant then the selections for T1 are as follows:

 

E+M - Used in T1 Signaling. E+M is used in CAS for signaling and supervisory roles. E+M uses two lines (E line and M line) to communicate typically between two PBX's or between a Router and a PBX because of its supervisory role. If the network uses E+M signaling select E+M from drop down menu.

FXS loop-start - FXS loop-start is the simplest form of CAS signaling. This form of signaling uses Off Hook current draw to signal the CO to  provide Dial Tone. The disadvantage to FXS loop-start is there no way of being notified that the far end has answered or disconnected. FXS loop-start is typically used on POTS lines and is typically used as signaling between a POTS phone and the PBX. If the network uses loop-start signaling select FXS loop-start from drop down menu.

 

 

In Start Dial / Out Start Dial:

Below is a table which shows the signaling selections under the In Start Dial and Out Start Dial fields.

 

SETTING IN CLIENTVIEW

In Start Dial

Out Start Dial

SIGNALING TYPE

WINK

WINK

SIGNALING TYPE

IMMEDIATE

FIXED PAUSE

SIGNALING TYPE

DIAL TONE

DIAL TONE

SIGNALING TYPE

NONE

NONE

 

 

Wink - Wink is the most commonly used protocol. When a phone goes off hook the originating switch signals to the next switch/router that it is going off hook. The second switch/router in turn sends a wink back to the original switch. Wink is typically used in E+M signaling. If wink is configured as the signaling type in the In Start Dial field then wink should be configured on the Out Start Dial field as well.

Immediate - No Winks are sent. This is the most basic protocol. The originating switch/router goes off-hook. The switch/router then  waits for a finite period of time (typically around 100-200 ms). At the end of this finite time, the switch then sends the dialed digits to the far end. There is no winking or supervisory roles being played. If Immediate is used in the In Start Dial then Fixed Paused should be used in the Out Start Dial.

Dial Tone - With Dial Tone Signaling once a channel is seized and Dial Tone is generated then the dtmf digits are sent. This signaling is used in FXS loopstart. If the In Start Dial is set to Dial Tone then the Outstart Dial will be set at None. If the Out Start Dial is set at None then the In start dial would be set at Dial Tone.

 

 

Address Signaling Type:

MFR1 - Multi Frequency Inband Signaling Technique typically used in on T1 lines in North America. MFR1 is used for trunk signaling between Switches/Routers.

DTMF - Dual Tone Multi Frequency Signaling Technique used over the line in the voice-frequency band from the telephone to the call switching center.

 

OutBound Multi Type:

If multiple strings are required to be sent during one stage set the required stages to be sent from the drop down menu. The selections are as follows:

 

Stage 1 (ANI + DN)

Stage 1 (DN + ANI)

Stage 2 (ANI + DN)

Stage 2 (DN + ANI)

 

 

Busy Out Flag:

The Busy Out feature is disabled by default. Busy Out is often used during maintenance periods.

Busy Out Disabled (Default) - The Busy Out Feature is disabled

Busy Out Enabled - Send a busy signal to the inbound caller

 

Another reason to have this enabled is if the phone is hung up the channel used immediately goes back to its idle state. Sometimes the third party application being used is not prepared to use that channel yet. The Busy Out feature would not allow another call to come in by sending a busy tone until the application is set for the next call.

 

Comments

Use this field to add comments.

 

 

Default Pane (E1 Signaling) --> E1DNANNICATOV and E1DNANNICAT:

SC_SignalingVariants-E1CAS.png

 

Field Descriptions:

Variant Name:

The Variant name given by you. When importing a Variant Table, this is fixed to the name of the Variant Table which was imported.

 

Variant Type:

The Variant Type is automatically populated with the CAS (Channel Associated Signaling) Variant.

 

Base Variant

Choose from drop down menu whether T1 or E1 signaling will be used. When importing a Variant Table and depending on which Variant Table is imported this will be either T1 Signaling or E1 signaling. This field is fixed when importing a Variant Table.

 

Variant ID:

Choose from drop down menu the ID that will be given to this Variant. When importing a table the Variant ID is fixed depending on which Variant Table is selected. In this example the file E1DNANICATOV is set to ID:2.

 

CAS Idle Bits:

In E1 CAS bits a-d are set at either a 1 or a 0 depending on whether the channel is in Idle/Released State or in a Seized state. The default is A bit and D bit which is 0x09. These can be changed by clicking in the CAS idle bit field. A Select Multiple Items box will appear. By using <Ctrl> + Mouse click you can select/deselectwhich bits to be used for idle. Below is table with the standard default states for ITU-T Q.421

 

State of Timeslot 16 in ITU-T Q.421

State of the Circuit

Signaling Code

 

Forward

Backward

 

A

B

C

D

 

A

B

C

D

Idle/Rel

1

0

0

1

 

1

0

0

1

Seized

0

0

0

1

 

1

0

0

1

Seized Acknowledged

0

0

0

1

 

1

1

0

1

Answered

0

0

0

1

 

0

1

0

1

Clear-Back

0

0

0

1

 

1

1

0

1

Clear-Forward

1

0

0

1

 

0/1

1

0

1

Blocked

1

0

0

1

 

1

1

0

1

 

*On Hook = 1

*Off Hook = 0

 

Note: In ITU-T Q.421 Bits C and D are fixed at C=0 D=1

 

 

CAS Out of Service Bits

In E1 CAS the default bits used in ITU-T Q.421 are Bit A, Bit B, and Bit D. This default can be changed by clicking in the CAS Out of Service Bits field. A Select Multiple Items box will appear. By using <Ctrl> + Mouse click you can select/deselect which bits to be used.

 

Address Signaling Type:

MFR2 - Multi Frequency Inband Signaling typically used in international networks. MFR2 is used in trunk signaling between switches/routers

MFR1 - Multi Frequency Inband Signaling Technique typically used in on T1 lines in North America. MFR1 is used for trunk signaling. MFR1 can be used in E1 network but would require importing a Variant that would accept this.

DTMF - Dual Tone Multi Frequency Signaling Technique used over the line in the voice-frequency band from the telephone to the call switching center.

 

Note: MFR2 register signaling is based on ITU-T Q.441

 

OutBound Multi Type:

This option does not apply to E1 MFR2 variants

 

Busy Out Flag:

The Busy Out feature is disabled by default. Busy Out is often used during maintenance periods.

Busy Out Disabled (Default) - The Busy Out Feature is disabled

Busy Out Enabled - Send a busy signal to the inbound caller

 

Another reason to have this enabled is if the phone is hung up the channel used immediately goes back to its idle state. Sometimes the third party application being used is not prepared to use that channel yet. The Busy Out feature would not allow another call to come in by sending a busy tone until the application is set for the next call.

 

Comments:

Use this field to add comments.

 

Next Configuration Tasks (CAS):

Digit Mapping

Filter/Timer Configure

Inpulsing Parameters

Inseize Instruction

Outseize Instruction