ISUP Group - ANSI

The ISUP Group object pane for ANSI defines the configuration for a group of ISUP channels. The contents of the pane will vary depending on whether the associated SS7 Stack is ANSI or ITU.

 

For information regarding the ISUP Group with an JTISUP stack selected in the OPC-DPC field, refer to the ISUP Group-JTISUP.

For information regarding the ISUP Group with an ITU stack selected in the OPC-DPC field, refer to the ISUP Group-ITU.

 

ClientView Pane

IMG EMS > Routing Configuration > Channel Groups > Channel Group (SS7) > ISUP Group

SC_ISUP_Group_ANSI.png

 

Maximum Objects

256 ISUP Groups per node

 

Related Topics and Dependencies

ISUP Group - ITU

ISUP Group - JTISUP

 

Field Descriptions

OPC - DPC

This field has a drop-down list populated with OPC-DPC combinations from previously configured SS7 Stack (OPC) and SS7 Route (DPC) configuration.

 

Local CLLI

This field indicates the local CLLI (Common Language Location Identification) code for the group of SS7 channels to which this channel belongs.

 

Remote CLLI

This field indicates the remote CLLI (Common Language Location Identification) code for the group of SS7 channels to which this channel belongs.

 

Trunk Number

Information used for circuit validation to identify the trunk number of the COMMON LANGUAGE circuit identification.

 

Glare Rule

Indicates how simultaneous incoming and outgoing seizures of the same SS7 channel are resolved.

Drop Outgoing Call - The incoming seizure is denied.

Drop Incoming Call - The outgoing seizure is denied

Odd/Even - The incoming seizure is denied if:

The OPC value is less than the DPC value and the CIC number is odd or,

The OPC value is greater than the DPC value and the CIC number is even (ITU-T Recommendation Q.767).

 

Incoming Continuity Check

Configures the behavior in case of receiving an IAM with Continuity Check required on this circuit.

Wait for COT (default) - Wait for the COT before sending the INVITE or Setup (Outgoing IP channel groups).

Do not wait for COT - Propagate the IAM with Continuity check required on previous circuit (Outgoing SS7 channel groups).

 

Out Continuity Check

This field indicates how frequently outgoing calls on the SS7 channel undergo an automatic continuity check.

 

None (Default) - No Continuity Checks Performed

1:xx - One out of every X calls undergoes a Continuity Check

1:02 - One of every 2 calls undergoes a Continuity Check.

1:03 - One of every 3 calls undergoes a Continuity Check.

1:04 - One of every 4 calls undergoes a Continuity Check.

1:05 - One of every 5 calls undergoes a Continuity Check.

1:06 - One of every 6 calls undergoes a Continuity Check.

1:07 - One of every 7 calls undergoes a Continuity Check.

1:08 - One of every 8 calls undergoes a Continuity Check.

1:09 - One of every 9 calls undergoes a Continuity Check.

1:10 - One of every 10 calls undergoes a Continuity Check.

1:11 - One of every 11 calls undergoes a Continuity Check.

1:12 - One of every 12 calls undergoes a Continuity Check.

1:13 - One of every 13 calls undergoes a Continuity Check.

1:14 - One of every 14 calls undergoes a Continuity Check.

1:15 - One of every 15 calls undergoes a Continuity Check.

1:16 - One of every 16 calls undergoes a Continuity Check.

 

Satellite Circuit

The Satellite Circuit field indicates if this SS7 channel makes use of a satellite facility.

 

No (Default)

Yes

 

CIC Service Rule

Indicates which SS7 message is sent when an SS7 stack on the 2020 IMG takes an SS7 channel out-of-service.

Block - The SS7 stack sends an SS7 Blocking (BLO) message. The SS7 stack will then send an SS7 Unblocking (UBL) message when the 2020 IMG puts the SS7 channel back in service.

No Bloc - The SS7 stack does not send an SS7 message. The SS7 stack will then send an SS7 Reset Circuit (RSC) message when the 2020 IMG puts the SS7 channel back in service.

No Action - The SS7 stack does not send any messages when SS7 channel is taken Out Of Service.

 

Hop Counter

Indicates the number of switches that can process a call before the call is dropped.

Off (Default) - Feature is Disabled. Switch will not drop call.

01-31 - Select from drop down list the number of switches that can process the call before call is dropped.

 

State transitions

Group Operations (Default)

Individual Operations (B/U)

Individual Operations (R/B/U)

 

Echo Suppression

Echo Suppression is designed to eliminate echo signals in one direction caused by signals in the other direction. Helps prevent the individual talking on a telephone line from hearing his or her own voice.

Echo Suppressor Not Present (Default) - Echo Suppression is disabled.

Echo Suppressor Present - Echo Suppression is enabled.

 

Circuit Group Carrier Indicator

This field indicates the nature of signaling on this SS7 channel’s physical medium. The Circuit Group Carrier Indicator provides information sent in either direction indicating if the circuit group carrier is analog, digital, or analog and digital. Supported on ANSI only

Unknown (Default) - Circuit Group Carrier medium is unknown

Analog - Medium is analog only

Digital - Medium is digital only

Analog and Digital - Medium is a mixture of both analog and digital

 

Alarm Carrier Indicator

Information sent in either direction indicating the type of carrier alarm handling.

Unknown (Default) - Unknown Carrier Handling

SW Cxr - Software Carrier Handling

HW Cxr - Hardware Carrier Handling

 

CVT Upon UPU

This field indicates if the controlling SS7 stack will automatically send an SS7 Circuit Validation Test (CVT) message when it receives a User Part Unavailable (UPU) indication for a call’s destination (DPC).

No (Default) - Do not automatically send an SS7 Circuit Validation Test

Yes - Automatically send an SS7 Circuit Validation Test

 

GRS/GRA Behavior

The GRS (Circuit Group Reset) message is sent to align the state of a group of CICs after an event such as calls being released or removing a blocked condition from a group of circuits. The GRS message will bring the CICs back into service after such events take place. The GRA message is sent in response to a GRS message which is indicating that the group of CICs has been realigned and are back in service.

Pre ANSI 1995 - default if SS7 Stack is configured for ANSI 93

Post ANSI 1995 - default if SS7 Stack is configured for ANSI 95 or 97

Sending GRS/GRA - The post 1995 GRA message, which would be sent in response to an incoming post 1995 GRS, will have the optional circuit assignment map parameter included if it was included in the incoming GRS. The pre 1995 GRA message, which would be sent in response to an incoming pre 1995 GRS, will not have a pointer to optional circuit assignment map parameter.

Receiving GRS/GRA - The received GRS/GRA messages are validated against the pre 1995 or post 1995 format depending upon the configuration for the base CIC. A confusion (CFN) message will be sent if the incoming message does not have the expected format.

 

Originating Line INFO Checking

Disable (Default) - The 2020 IMG will not validate that there is a Charge Number parameter included in the IAM with the Originating Line Info parameter

Enable - The 2020 IMG will validate that there is a Charge Number parameter included in the IAM with the Originating Line Info parameter as per ANSI standards.

 

Discard Privacy INFO

Discard Privacy info omits CLI in the ISUP message. Choices shown below:

 

Off (Default)

Display Only

Generic Number Only

Display & Generic Number

Calling Party Only

Display and Calling Number

Calling, Display and Generic

 

USI (User Service Info) Transfer Capability Allowed

Information sent in the forward direction indicating the bearer capability requested by the calling party. Selections are below.

 
Speech
Unrestricted Digital Info
Restricted Digital Info
3.1 KHz Audio
Unrestricted Digital with tones/announcements

 

USI (User Service Info) Transfer Rate Allowed

Information sent in the forward direction indicating the bearer capability requested by the calling party. Selections are below.

 
64  Kbits/s
384 Kbits/s

 

USI Screening Cause Value

 

65 (Bearer Not Implemented)

88 (Incompatible Destination)

 

LNP Routing Enable

Enables or disables Local Number Portability routing.

 

Disable (Default)

Enable

See Local Number Portability (LNP).

 

Link OOS Handling

Disable (Default) - Functionality is same as previous software. If Signaling Link goes Out Of Service, then the associated CICs will go Out Of Service as well.

Enable - If signaling link goes Out Of Service all associated CIC's which are in the idle state will go Out Of Service. If any CICs are in either the ringing or connected state the CIC's will not go Out Of Service until a later subsequent condition occurs. Refer to the SS7 Link OOS Handling topic for more information on configuration and functionality.

 

Layer 3 Route Type

MTP3 - Defaults to MTP3 and cannot be modified