IMG 1010 - SS7 Stack

Description:

Within this pane SS7 stack information is configured.

Accessing this Pane:

Dialogic IMG EMS-> Logical IMG-> Physical IMG-> SS7 -> SS7 Stack

Maximum Objects: (Software 10.3.3)

4 per Physical IMG 1010.

Maximum Objects: (Software 10.5.0 and above)

4 per Logical IMG. ( 16 ) per GCEMS/ClientView

Maximum Objects: (Software 10.5.3 SP7)

4 per Logical IMG. ( 32 ) per GCEMS/ClientView

Note on SS7 Functionality on the IMG 1004: With each new software release Dialogic has added new SS7 functionality to the IMG 1004. See timeline below:

Release 10.5.1 – Ability to act as a remote SS7 node and terminate up to four links. (F-1406)

Release 10.5.3 – Full SS7 functionality. (F-1446)

Technical Notes:

When configuring an SS7 Stack, the following happens:

The SS7 stack is configured on the physical IMG. A point code will be configured and a stack ID will be assigned to it.

SS7 Specifications for IMG 1010 and IMG 1004:

ClientView Pane:

10.5.3:

10.3.x-10.5.1:

Field Descriptions:

Stack ID (10.3.3)

This field specifies the ID of the stack. Under each Physical IMG ClientView supports configuring 4 stacks. The stack ID's can be set from 0 – 3. See "An Overview of SS7 Signaling" in related Topics above for more information

Stack ID (10.5.0)

This field specifies the ID of the stack. ClientView supports configuring a maximum of 16 stacks. Under each Physical IMG object ClientView supports configuring a maximum of four stacks. See "An Overview of SS7 Signaling" in related Topics above for more information.

SS7 Variant:

This field specifies the variant used for the stack.

Select from drop down menu either Use Base Variant or if there are any custom SS7 variants configured, they will be displayed in the drop down menu to select from. If using an SS7 Variant the ISUP field will automatically get populated with what was configured in the custom variant.

Once a custom variant is assigned to a stack, you cannot modify or delete an existing entry in the variant. You can add new entries, however.

ISUP:

If Base Only is selected in the SS7 Variant field above, you will be able to select from drop down menu the ISUP variant. Variants shown in table below. If a custom variant is created, this field will default to the ISUP variant configured in the custom variant.

Variant:	Point Code Format:
ANSI 97:	8-8-8
ANSI 95	8-8-8
ANSI 92	3-8-3
ITU 97	3-8-3
ITU 93	3-8-3
CCITT 88	3-8-3
ETSI V1	3-8-3
ETSI V2	3-8-3
ETSI V3	3-8-3
China	8-8-8
JT-ISUP	7-4-5

OPC:

This field specifies the originating point code value of stack. Point codes can be expressed in dotted decimal or decimal format. See Point Code Format in table above.

MTP Pause:

This field determines whether resuming traffic to a paused DPC will be immediate or delayed.

Immediate

Delayed

Cause Location:

The value populated in the Location parameter in the Cause IE when a call is released.

User (default)- Message Generated by User

Private Network- Message generated by private network serving the local user

Local public network- Message generated by public network serving the local user

Transit network- Message generated by transit network

Remote public network- Message generated by public network serving the remote user

Remote private network- Message generated by private network serving the remote user

International network- Message generated by international network

Network Beyond Interworking Point- Message generated by network beyond inter-working point.

Exchange Type:

Type A- The IMG does not send any messages at start-up, but responds to a GRS with a GRA, or an RSC with an RLC.

Type B (Default)- The IMG sends a GRS/RSC at start-up. The IMG waits for a remote GRA/RLC before bringing the CICs in service.

When Type A is configured, CIC Service Rule in ISUP Group is required to set to No Action.

Message Compatibility Pass On:

This field specifies whether or not to pass unrecognized messages when they are received.

On (Default)

Off

Network Indicator:

The network indicator displayed in MTP (Level 3) indicates the type of message (National/International). This field specifies whether the network indicator of ISUP messages sent is set to national or international.

National (Default)- Used for ANSI ISUP Variants.
International- Used for non-ANSI ISUP Variants.
01- Spare
03- Spare

Suppress UCIC's:

Enabled- Default if the Network Indicator is set to International.

Disabled- Default if the Network Indicator is set to National.

Default- When upgrading from a pre-10.3.2 ER5 release, this field will be set to the default for the Network Indicator configured.

CFN Status:

Enabled (Default)- IMG will respond to an unknown message with CFN (Confusion Message).

Disabled- IMG will not respond to an unknown message with CFN (Confusion Message).

Japanese MTP Variant:

When configuring Japan ISUP, this field selects the appropriate configuration for MTP depending on the variant you are using.

JT- Supports Japan Telecom

TTC- Supports Nippon Telegraph and Telephone of Japan

A/B Plane Bit Insertion and Validation:

Used when configuring JTISUP

Enable

Disable

SCCP:

SCCP is the transport layer and routing mechanism for TCAP messages. You must enable SCCP on the SS7 stack if TCAP messaging is to be used. Select from drop down menu one of the following selections.

Disabled (Default)- SCCP Protocol is disabled in the SS7 stack.

ANSI - Enable SCCP Protocol for use with ANSI standards

ITU - Enable SCCP Protocol for use with ITU standards

TCAP:

Disabled (Default)- TCAP Protocol is disabled in the SS7 stack.

ANSI - Enable TCAP Protocol for use with ANSI standards

ITU - Enable TCAP Protocol for use with ITU standards

M3UA Service Mode:

Disabled (Default) - M3UA signaling is disabled. Stacks configured with this field 'disabled' cannot be used in M3UA configuration

Signaling Gateway (SG) Mode - The stack being created will have M3UA Service set to Signaling Gateway mode. Signaling Gateway mode can be configured on up to (4) stacks total per Logical IMG Group. See IMG 1010 - Overview of Sigtran M3UA. When the Signaling Gateway Mode is selected, either SCCP, TCAP, or both will need to be configured from the SCCP and TCAP fields explained above.

Application Server (AS) Mode - The stack being created will have M3UA Service set to Application Server mode. Application Server mode can be configured on up to (4) stacks total per Logical IMG Group. See IMG 1010 - Overview of Sigtran M3UA. When the Application Server Mode is selected, either SCCP, TCAP, or both will need to be configured from the SCCP and TCAP fields explained above.

Up to (4) stacks can be created per Logical IMG Group using the M3UA protocol. There is no limitation to how many of each type of stack that can be created. For example, under one Logical Group (4) stacks can be created. The stacks could be all Signaling Gateway Mode stacks, all Application Server Mode stacks, or a mix of both.

Additional JTISUP Information:

The IMG supports JT-ISUP, the SS7 standard for Japan (JT-Q.763). Select this variant in the ISUP field of the SS7 Stack pane. If JT-ISUP is selected, the Japanese MTP Variant -and- A/B Plane Bit Insertion and Validation fields must be configured accordingly.

Differences from Other ISUP Version

Point code format is 7-4-5
Manual COT test not supported
Unique CIC mapping scheme (see IMG 1010 - JT ISUP CIC Mapping)

Troubleshooting

Check for Point Code Mismatch* Make sure Distant End Gateway supports JT-ISUP