Glossary

Telecom reference for SS7, SIGTRAN, SIP and TDM networks: protocols, signalling, transmission and media, plus the parameter reference for TelcoBridges systems.

This is the definitions-and-standards half of the documentation. For procedures — how to configure a system, what a portal menu does — see Tmedia Documentation.

SS7 and signalling

The SS7 stack, layer by layer, and the SIGTRAN adaptations that carry it over IP.

• MTP2 — the link layer. MTP2, error correction

• MTP3 — routing and network management. MTP3

• SCCP — connectionless transport, addressing and global title translation

• ISUP — call control

• TCAP — transaction capabilities

• SIGTRAN — M2PA, M2UA, M3UA over SCTP

• SS7 general — point codes, GTT, SMS, circuit identification codes

Transmission and lines

• STM-1 and SONET/SDH interfaces

• PCM and HDLC

• T1/E1/J1 RJ48 cable diagram — pinouts

SIP and VoIP

• SIP session timers, SIP registration, SIP subscribe/notify/publish

• NAP — network access points

• H.248 protocol and TLS

Voice and media

• Ringback tones and DTMF relay

• sRTP encoding and decoding

• Automatic gain control

ISDN and CAS

• ISDN, CAS, CAS R2 scripting

• Overlap dialling and a short history of SS7

Telecom concepts

• Call detail records and text CDRs

• Termination cause codes — Q.850

• Softswitch, value-added services, digit analyzer

Parameter reference

Every configurable parameter, grouped by subsystem. Search the parameter name and you land on its row.

• Sub-system number (SSN) — the most-read page in this library

• Subsystem tables: SCCP, SIP, ISUP, MTP2, MTP3, M3UA, ISDN, TDM, fax and modem, CDR, hardware, IP network, RTP and media, routing, transcoding, security, SNMP, H.248 and MGCP, system, other

APIs and integration

• API and the framework database

• Regular expressions — and the quick start guide

• SNMP and the CMC library

Other pages

Everything that did not fit a section above — GSM-R, TTC, UDP/IP, RAW IP, product installation and contacting TelcoBridges support.