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The IMG 2020 supports sending UUI (User to User Information) between called and calling parties. The purpose of the User to User Information support is to pass specific information not pertaining to the call from one user to another. The information can be passed during the following phases of a call.
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IAM to IAM- The User to User data is initially received in the incoming SS7 IAM message. It is then propagated to the outbound SS7 network using the SS7 IAM message.   | ANM to ANM- The User to User data is initially received in the incoming ANM message. It is then propagated to the SS7 side and transmitted out using the SS7 IAM message.
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SAM to IAM- The User to User data is initially received in the incoming SS7 SAM message. It is then propagated to the outbound SS7 network using the SS7 IAM message.  | REL to REL- The User to User data is initially received in the incoming SS7 REL message. It is then propagated to the outbound SS7 network using the SS7 REL message.   |
Between ISDN and SS7
IAM to IAM- The User to User data is initially received in the incoming SS7 IAM message. It is then propagated to the outbound SS7 network using the SS7 IAM message.   | ACM to ALERTING- The User to User data is initially received in the incoming SS7 ACM message. It is then propagated to the outbound ISDN network using the ALERTING message.  
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ANM to CONNECT- The User to User data is initially received in the incoming SS7 ANM message. It is then propagated to the outbound ISDN network using the CONNECT message.   |
Between ISDN and SIP
SETUP to INVITE- The User to User Data is received in the ISDN SETUP message. It is then propagated to the outbound SIP network using the SIP INVITE.   | ALERTING to 1xx- The User to User Data is received in the ISDN ALERTING message. It is then propagated to the SIP network using the 1xx informational Response message.   |
CONNECT to 200 OK- The User to User Data is received in the ISDN CONNECT message. It is then propagated to the outbound SIP network using the 200 OK Successful response.   | DISCONNECT to BYE- The User to User Data is received in the ISDN DISCONNECT message. It is then propagated to the SIP network using the BYE message.   |
RELEASE to BYE- The User to User Data is received in the ISDN RELEASE message. It is then propagated to the outbound SIP network using the SIP BYE message.   | RELEASE to 4xx, 5xx Response- The User to User Data is received in the ISDN RELEASE message. It is then propagated to the outbound SIP 4xx, 5xx Responses.   |
UUI in INFO Message- The User to User information is received in the ISDN INFO message. It is then propagated to the outbound SIP INFO message.   |
Between SS7 and SIP
IAM to INVITE- The User to User data is initially received in the incoming SS7 IAM message. It is then propagated to the outbound SIP network using the INVITE message.  
| 200 OK to ANM- The User to User data is initially received in the incoming SIP 200 OK message. It is then propagated to the outbound SS7 network using the ANM message.  
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RELEASE to BYE- The User to User Data is received in the SS7 RELEASE message. It is then propagated to the outbound SIP network using the SIP BYE message.   | UUI in USR Message- The User to User information is received in the SS7 USR message. It is then propagated to the outbound SIP INFO message and vice versa.  |
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Right click on the IMG 2020 physical node object and select New Signaling. The Signaling object is a parent or container object and nop configuration is needed here. Refer to the Signaling topic for more information.
Right click on the Signaling object and select New ISDN. The ISDN object is a parent or container object. Under the ISDN object multiple D-Channels can be configured. Refer to the ISDN - Signaling topic for more information.
Right click on the ISDN object and select New ISDN D-Channel. Select a DS-1 from the Primary Span field. This field is a drop down menu that contains all the TDM DS-1's created. DS-1's 0 through 3 are on the four RJ48 interfaces located on the rear of the IMG 2020 and DS-1's 0 through 27(T1) or 0 through 31(E1) refer to either the DS-3 or Optical Interface. Select from the drop down menus, the DS-1 and DS-0 that the D-Channel will get created on.
Select Yes from drop down list in the NFAS Supported field if NFAS (Non-Facility Associated Signaling) is being configured. Select No if configuring FAS (Facility Associated Signaling). Refer to isdn d topic for more information on configuring the D-Channel object.
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Right click on the ISDN D-Channel object and select New ISDN Group. The ISDN Group assigns information such as the capabilities of the DS-1 the D-Channel will be configured on and the Network the D-Channel will be used in. Refer to the ISDN Group topic for more information on configuring this object.
Right click on the ISDN BDN object just created and select New ISDN Circuit Group. The Circuit Group are the B-Channels that are being controlled by the D-Channel configured above. Select a starting DS-1 from the Start Span field. This field is a drop down menu that contains all the TDM DS-1's created. Spans 0 through 3 are on the four RJ48 interfaces located on the rear of the IMG 2020 and DS-1's 0 through 27(T1) or 0 through 31(E1) refer to either the DS-3 or Optical Interface. Select from the drop down menus, the starting and ending DS-1's/DS-0's that will make up the ISDN Circuit Group. The Circuit Group being created will be controlled by the D-Channel configured above. Refer to the ISDN Circuit Group topic for more information on configuring this object.
Right click on the ISDN BDN object again and select New ISDN Parameter Filter. Select Pass from the drop down menu of the UUI field.
Configure an ISDN Channel Group along with the ISDN Circuits
Right click on the IMG 2020 object and select New Routing Configuration. The Routing Configuration object is container object and no configuration is needed. Refer to Routing Configuration topic for more information on this object.
Right click on the Routing Configuration object and select New Channel Groups. The Channel Groups object is a container object for multiple channel groups. No configuration is needed here. For more information refer to Channel Groups topic.
Right click on the Channel Groups object and select New Channel Group. In the Name field, either accept the default name entered or enter a name that will identify this specific Channel Group.
Select ISDN from the drop down menu in the Signaling Type field. For more information on configuring the ISDN Channel Group refer to Channel Group topic.
Right Click on the ISDN Channel Group created and select New Circuit Group. As described in the Configure the Configure ISDN circuits and UUI support section above, select the node and DS-1's/DS-0's that will be used for this circuit group. The selections made should mimic the selections made in the section above. Refer to the ISDN Circuit Group topic for more information on this object.
Click on the Channel Groups object which will now have a yellow exclamation point displayed. Click on the Download Resource Tables button and the SS7 Channel Group configuration just created will be sent to the 2020 IMG.
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To configure the SS7 Network along with stacks, linksets, links, destinations and routes, refer to the Configure SS7 topic. Once the functionality above has been configured, follow the steps described below to configure the SS7 Channel Group, SS7 ISUP Group, SS7 Parameter Filter and then enable UUI.
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Right click on the IMG 2020 object and select New Routing Configuration. The Routing Configuration object is container object and no configuration is needed. Refer to Routing Configuration topic for more information on this object.
Right Click on the Routing Configuration object and select New Channel Groups. The Channel Groups object is a container object for multiple channel groups. No configuration is needed here. For more information refer to Channel Groups topic.
Right click on the Channel Groups object and select New Channel Group. In the Name field, either accept the default name entered or enter a name that will identify this specific Channel Group.
Select SS7_ISUP from the drop down menu in the Signaling Type field. For more information on configuring the SS7 Channel Group refer to Channel Group topic.
Right Click on the SS7 Channel Group created and select New Circuit Group. As described in the Configure the SS7 ISUP Group and Circuit Group (CICs) section above, select the node and the DS-1's/DS-0's that will be used for this circuit group. The selections made should mimic the selections made in the section above. Refer to the SS7 - Circuit Group under Signaling topic for more information on this object.
Click on the Channel Groups object which will now have a yellow exclamation point displayed. Click on the Download Resource Tables button and the SS7 Channel Group configuration just created will be sent to the 2020 IMG.
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Right click on the Profiles object and select New SIP Profiles. The SIP Profiles object is a parent or container object. No configuration is needed here. Refer to the SIP Profiles topic for more information on this object.
Right click on the SIP Profiles object and select New SIP Profile. The first profile that gets created is a Default SIP Profile and cannot be modified. Disregard this profile.
Right click on the SIP Profiles object and select New SIP Profile again. In the SIP Profile object that appears, either enter a name that identifies this SIP Profile or accept the default name already entered. In this example the SIP Profile was labeled UUI_Profile. Refer to the SIP Profile - SGP topic for more information on this object.
Right click on the SIP Profile object just created and select New SIP Headers. Select Enabled from the drop down menu of the User to User Header field. Refer to the SIP Profile - Headers topic for more information.
The Prot. Discriminator Byte is set to Not Included by default. If User to User is enabled, then decide whether the Protocol Discriminator Byte is to be set to Not Included or Included.
Example below displays the conversion of the Prot. Discriminator Byte:
UUI = 7e0d046773677367736773 = (Prot. Discriminator Byte)
This will get converted to gsgsgsgs where
ascii g = Hex 67
ascii s = Hex 73The SIP Profile can now be associated with an External Remote Gateway and the gateway can be linked to a SIP channel group. Refer to the Configure SIP (Single SIP IP) topic for information on configuring this.
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Binary (Default)- When binary is selected, the User to User Information is displayed as it has always been displayed. The binary stream is interworked and relayed to the opposite side.
Hexadecimal- When Hexadecimal is selected, the User to User Information is interworked as follows:
SS7 to SIP |
If User to User information is received in a binary stream, on the SIP side each binary character received will be converted to its hex equivalent for the uui-data field. Each binary character received will be converted to its hex equivalent. Refer to example below. Example: 00 D2 34 will be relayed to SIP side as 30 30 44 32 33 34 |
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