Introduction
4
The SS7 Solution provides connectionless, UNIX stream-based interprocess
communications between EdgeIQ nodes and the PSTN. Control of the SS7 solution
is provided by the telephony application via the Managed API.
The SS7 implementation consists of basic call setup and maintenance following the
ANSI T1-113.1 standard (ISDN), ANSI T1-113.4 standard (TCAP), and ITU Q761
to ITU Q767. ISUP call control command, information elements (IEs), and
management functionality are supported.
The SS7 stack (MTP1/MTP2/MTP3/ISUP) is a third party offering. The hardware
and software functions of the SS7 protocol are categorized into levels that map to the
Open Systems Interconnect (OSI) 7-layer model defined by the International
Standards Organization (ISO). The association is shown below:
MTP Level
OSI Layer
1
Physical layer (physical/electrical/functional)
2
Data link layer (end-to-end transmission)
3
Network layer (message routing over SS7
nodes)
Table 1: MTP Level to Layer Mapping
The ISDN User Part (ISUP) defines the protocol and procedures used to set up,
manage, and release trunk circuits that carry voice and data calls over the PSTN.
Software architecture and operating system compatibility is shown on the following
diagram:
Summary of Contents for SS7
Page 1: ...EdgeIQ R11 0 SS7 Quick Start Guide ...
Page 4: ......
Page 10: ......
Page 12: ......
Page 14: ......
Page 64: ...Level 2 Tracing SS7 52 7 Load output 3 into Wireshark the following window appears ...
Page 65: ......
Page 66: ...B2214167 6 SR1 ...