QSIG

B Private Networking

QSIG Protocols

QSIG signaling protocols are based on ITU-T (formerly CCITT) Q.931 access protocols across the Q reference point. QSIG standards are also supported by the ISDN Private Networking Specification (IPNS) Forum. DEFINITY ECS QSIG complies with a number of international regulations. For example, QSIG:

Complies with ISO standard 11572 for layer 3 to support private-network connectivity.

Meets requirements for the ISO Private Network Generic Functional Procedures (ISO standard 11582) for call-related supplementary services.

Supports call-related supplementary service transport, Abstract Syntax Notation 1 (ASN.1)/Basic Encoding Rules (BER), and Remote Operation Service Element (ROSE) services/protocols.

Provides the Name and Number Identification supplementary service as defined by ISO Standards 13864, 13868, and 11572.

Provides Call Forwarding (Diversion) as defined by ISO Standards 13872 and 13873.

Provides Call Transfer as defined by ISO Standards 13865 and 13869.

Temporary Signaling Connection (TSCs)

A Temporary Signaling Connection (TSC) provides a temporary signaling path through ISDN switches for exchanging supplementary service information (for example, exchange Facility Information Elements in call control messages, FACILITY messages, or a combination of both on ISDN D-channels. There is no B-channel related to the connection; no data or voice transmissions take place.

There are two types of temporary signaling connections:

Call Associated (CA-TSC)

Non-Call Associated (NCA-TSC)

CA-TSC (DCS only)

A CA-TSC refers to a service for exchanging USER INFORMATION messages associated with an ISDN B-channel connection by the call reference value of the call control data packets. On DEFINITY ECS, this type of TSC is used only for DCS features on ISDN-PRI Signaling Groups administered with Supplementary Service Protocol a.

Administration for Network Connectivity

 

 

555-233-504 — Issue 1 — April 2000

CID: 77730

369

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Lucent Technologies Release 8.2 manual Qsig Protocols, Temporary Signaling Connection TSCs, CA-TSC DCS only