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Entities that are interconnecting to the U S WEST SS7 network can do so through the Local Signaling Transfer Points (LSTPs). The interconnection arrangements can be done through A-links or D-links based upon the arrangement that the Interconnecting Network (ICN) is capable of supporting. STP gateway screening tables will be individually translated for each link set by the appropriate U S WEST personnel to permit the Global Locator Request message sets to enter the U S WEST Network
ICN STP to U S WEST STP
The ICN mated STP pair is interconnected to the U S WEST mated STP pair by way of quad"D" (Diagonal) links. Three physically diverse link facility routes are strongly recommended. U S WEST will effectuate and maintain link diversity from the geographically separated U S WEST Communications Inc. Signaling Transfer Point to the ICN Signaling Point of Interface (SPOI) per a joint agreement. The ICN will be responsible for interm GTT to route to the U S WEST STP for final Global Title Translation.
ICN HLR to U S WEST STP
The ICN HLR is interconnected to the U S WEST mated STP pair by way of dual "A" (Access) links. U S WEST will effectuate and maintain link diversity from the geographically separated U S WEST Communications Inc. Signaling Transfer Point to the ICN Signaling Point of Interface (SPOI) per a joint agreement.
Link Transport Architecture
Link Architecture: Each CCS signaling link must provide digital bi-directional transmission. Each full duplex signaling link shall operate at the 56 kbit/s data rate and occupy a single DS0 (64 kbit/s) channel of a 24 channel DS1 digital transmission system. The DS0-A channels (links) are multiplexed into a DS1 format for hand off at the Network Interface (NI); the point of interconnect between the U S WEST Communications, Inc. Network and the ICN. Facility Architecture: A synchronized DS1 (1.544 Mbit/s rate) terrestrial digital facility is required. The facility must be channelized, and comply with the requirements given in Bellcore Technical Reference GR-342-CORE, "High-Capacity Digital Special Access Service -Transmission Parameter Limits and Interface Combinations."
- The DS1 facility does not require Clear Channel Capability (CCC) and may have robbed-bit signaling.
- DS1 Extended Superframe (ESF) format is strongly recommended.
- DS1 Superframe (SF) may be used, but is not recommended.
GR-324-CORE can be obtained by contacting:
Telecordia Customer Relations
8 Corporate Place, Room 3A-184
Piscataway, NJ 08854-4196
Fax: (908) 336-2559
Phone: (800) 521-CORE (2673) (U.S. and Canada)
Phone: (908) 699-5800 (Others) 77200 77375
Additional information is also contained in U S WEST's Technical Publications:
#77200 - DS1 Service and Synchronization Service
#77375 - 1.544 Mbit/s Channel Interface Technical Specifications for Network Channel Interface Codes Describing Electrical Interfaces at Customer Premises and at U S WEST Communications, Inc. Central Offices U S WEST Publications can be obtained by contacting:
Faison Office Products Company
3251 Revere Street, Suite 200
Aurora, CO 80011
or call (800) 777-3672
FAX Number (303) 340-1905
Message Format
The following section will define the Global Locator Service (GLS)
messages containing the REGNOT query and regnot response messages as
well as the MSINACT query and msinact response messages that will be
sent between the WSPs HLR and the U S WEST SCP pair via a U S WEST
local STP. There are two scenarios for the message format based on the
type of interconnection the WSP chooses to utilize, either A or D links.
For the REGNOT and MSINACT query messages, it is expected that these
messages will be distributed across a linkset for load balancing
purposes.
RegistrationNotification Invoke - "A" link interconnection (REGNOT)
| MTP layer |
DPC
OPC |
| SLS |
| Message Type=UDT |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Pointer to Called Party Address Field
Pointer to Calling Party Address Field
Pointer to TCAP data |
| LI of CdPA field |
| 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
Called Party Address Field
SSN = 0
TT = 8
GTA Digits = MIN |
| LI of CgPA Field |
| 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 |
Calling Party Address Field
SSN = SSN for HLR GLS Application
Point Code of HLR |
| Length Indicator of TCAP Data Field |
TCAP Data Field
(see TCAP query content, next page) |
RegistrationNotification Invoke - "D" link interconnection (REGNOT)
| MTP layer |
DPC
OPC |
| SLS |
| Message Type=UDT |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Pointer to Called Party Address Field
Pointer to Calling Party Address Field
Pointer to TCAP data |
| LI of CdPA field |
| 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
Called Party Address Field
SSN = 0
TT = 8
GTA Digits = MIN |
| LI of CgPA Field |
| 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 |
Calling Party Address Field
SSN = SSN for HLR GLS Application
Point Code of HLR |
| Length Indicator of TCAP Data Field |
TCAP Data Field
(see TCAP query content, next page) |
TCAP Data Field - RegistrationNotification Invoke (REGNOT)
| RegistrationNotification (Invoke) Parameters | |
|
| TCAP Package Type: |
| Query with Permission |
| Transaction ID | |
| Component Sequence | |
| Component Type: | Invoke (last) |
| Component ID | |
| Operation Code: | National TCAP |
| Parameter Set | |
| Mandatory Parameters-- | |
| ElectronicSerialNumber | |
| MobileIdentificationNumber | |
| MSCID | |
| QualificationInformationCode | |
| SystemMyTypeCode | |
| Optional Parameters-- | |
| AvailabilityType | |
| BorderCellAccess | |
| ControlChannelData | |
| ExtendedMSCID | |
| LocationAreaID | |
| PC_SSN | |
| ReceivedSignalQuality | |
| ReportType | |
| SenderIdentificationNumber | |
| SMS_Address | |
| SMS_MessageWaitingIndicator | |
| SystemAccessData | |
| SystemAccessType | |
| SystemCapabilities | |
| TerminalType | |
| TransactionCapability | |
RegistrationNotification Return Result (regnot)
| MTP layer |
DPC
OPC |
| SLS |
| Message Type=UDT |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Pointer to Called Party Address Field
Pointer to Calling Party Address Field
Pointer to TCAP data |
| LI of CdPA field |
Called Party Address Field
SSN = SSN for HLR GLS Application |
LI of CgPA Field
Address Indicator |
Calling Party Address Field
SSN = SSN for SCP GLS Application |
| Length Indicator of TCAP Data Field |
TCAP Data Field
(see TCAP query content, next page) |
TCAP Data Field - RegistrationNotification Return Result (regnot)
| RegistrationNotification (Return Result) Parameters | |
|
| TCAP Package Type: | Response |
| Transaction ID | |
| Component Sequence | |
| Component Type: |
| Return Result (last) |
| Component ID | |
| Parameter Set | |
| SystemMyTypeCode | |
MSInactive Invoke - "A" link interconnection (MSINACT)
| MTP layer |
DPC
OPC |
| SLS |
| Message Type=UDT |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Pointer to Called Party Address Field
Pointer to Calling Party Address Field
Pointer to TCAP data |
| LI of CdPA field |
| 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
Called Party Address Field
SSN = 0
TT = 8
GTA Digits = MIN
|
| LI of CgPA Field |
| 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 |
Calling Party Address Field
SSN = SSN for HLR GLS Application
Point Code of HLR
|
| Length Indicator of TCAP Data Field |
TCAP Data Field
(see TCAP query content, next page) |
MSInactive Invoke - "D" link interconnection (MSINACT)
| MTP layer |
DPC
OPC |
| SLS |
| Message Type=UDT |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Pointer to Called Party Address Field
Pointer to Calling Party Address Field
Pointer to TCAP Data Field |
| LI of CdPA field |
| 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
Called Party Address Field
SSN = 0
TT = 8
GTA Digits = MIN
|
| LI of CgPA Field |
| 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 |
Calling Party Address Field
SSN = SSN for HLR GLS Application
Point Code of HLR
|
| Length Indicator of TCAP Data Field |
TCAP Data Field
(see TCAP query content, next page) |
TCAP Data Field - MSInactive Invoke (MSINACT)
| MSInactive (Invoke) Parameters | |
| TCAP Package Type: |
| Query with Permission |
| Transaction ID | |
| Component Sequence | |
| Component Type: | Invoke (last) |
| Component ID | |
| Operation Code: | National TCAP |
| Parameter Set | |
| Mandatory Parameters-- | |
| MobileIdentificationNumber | |
| ElectronicSerialNumber | |
| Optional Parameters-- | |
| CallHistoryCount | |
| DeregistrationType | |
| LocationAreaID | |
| SenderIdentificationNumber | |
| SMS_MessageWaitingIndicator | |
MSInactive Return Result (msinact)
| MTP layer |
DPC
OPC |
| SLS |
| Message Type=UDT |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Pointer to Called Party Address Field
Pointer to Calling Party Address Field
Pointer to TCAP Data Field |
| LI of CdPA field |
| Address Indicator
|
Called Party Address Field
SSN = SSN for HLR GLS Application
|
| LI of CgPA Field |
| Address Indicator
|
Calling Party Address Field
SSN = SSN for SCP GLS Application
|
| Length Indicator of TCAP Data Field |
TCAP Data Field
(see TCAP query content, next page) |
TCAP Data Field - MSInactive Return Result (msinact)
| MSInactive (Return Result) Parameters | |
|
| TCAP Package Type: | Response |
| Transaction ID | |
| Component Sequence | |
| Component Type: |
| Return Result (last) |
| Component ID | |
| Parameter Set | |
Additional information relative to the Mobility Application Part (MAP) protocol is contained in ANSI/EIA/TIA-41.
This document can be obtained by contacting:
Electronics Industry Association/Telecommunications Industry Association (EIA/TIA)
2500 Wilson Blvd., Suite 300
Arlington, VA 22201
Phone: (703) 907-7700
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