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Definity ECS Admin for Network Connectivity.pdf - TextFiles.com

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QSIG<br />

B Private <strong>Network</strong>ing<br />

QSIG Protocols<br />

QSIG signaling protocols are based on ITU-T (<strong>for</strong>merly CCITT) Q.931 access<br />

protocols across the Q reference point. QSIG standards are also supported by the<br />

ISDN Private <strong>Network</strong>ing Specification (IPNS) Forum. DEFINITY <strong>ECS</strong> QSIG<br />

<strong>com</strong>plies with a number of international regulations. For example, QSIG:<br />

• Complies with ISO standard 11572 <strong>for</strong> layer 3 to support private-network<br />

connectivity.<br />

• Meets requirements <strong>for</strong> the ISO Private <strong>Network</strong> Generic Functional Procedures<br />

(ISO standard 11582) <strong>for</strong> call-related supplementary services.<br />

• Supports call-related supplementary service transport, Abstract Syntax Notation 1<br />

(ASN.1)/Basic Encoding Rules (BER), and Remote Operation Service Element<br />

(ROSE) services/protocols.<br />

• Provides the Name and Number Identification supplementary service as defined<br />

by ISO Standards 13864, 13868, and 11572.<br />

• Provides Call Forwarding (Diversion) as defined by ISO Standards 13872 and<br />

13873.<br />

• Provides Call Transfer as defined by ISO Standards 13865 and 13869.<br />

Temporary Signaling Connection (TSCs)<br />

A Temporary Signaling Connection (TSC) provides a temporary signaling path<br />

through ISDN switches <strong>for</strong> exchanging supplementary service in<strong>for</strong>mation (<strong>for</strong><br />

example, exchange Facility In<strong>for</strong>mation Elements in call control messages,<br />

FACILITY messages, or a <strong>com</strong>bination of both on ISDN D-channels. There is no<br />

B-channel related to the connection; no data or voice transmissions take place.<br />

There are two types of temporary signaling connections:<br />

• Call Associated (CA-TSC)<br />

• Non-Call Associated (NCA-TSC)<br />

CA-TSC (DCS only)<br />

A CA-TSC refers to a service <strong>for</strong> exchanging USER INFORMATION messages<br />

associated with an ISDN B-channel connection by the call reference value of the call<br />

control data packets. On DEFINITY <strong>ECS</strong>, this type of TSC is used only <strong>for</strong> DCS<br />

features on ISDN-PRI Signaling Groups administered with Supplementary Service<br />

Protocol a.<br />

<strong>Admin</strong>istration <strong>for</strong> <strong>Network</strong> <strong>Connectivity</strong><br />

555-233-504 — Issue 1 — April 2000 CID: 77730<br />

369

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