Clarinet SS7 Application

Presentation

Standard features

Interface connection
Analysis Functions
Emulation functions
Signaling simulation
Programmable simulation
Conformance testing simulation
Clarinet-system: basic configuration

Interface Connection

Interface Under Test

• From 1 to 7 Clarinet Books units managed simultaneously
• Support of 1 switchable interface per unit:
  • E1 75 or 120 Ohms
  • T1 75 or 100 Ohms

Operating Interfaces

• Transdata
• Handset
• Transit

Analysis Functions

Interface Management

• Management on each interface of two types of  links:
  • PH-physical link: E1 or T1 with configuration options.
  • SS7 Signaling link: definition of  2 SS7 signaling channels  for each T1 or E1 interface,

Protocol Event Generation

• Time-stamping at 0.1ms
• Physical level: TS0-G703, T1 Alarms, clock slip
• SS7 Signaling links:  BOP events,  SS7 events (frames counts)
• DTMF code.

Statistics Event Generation

• Sampling at a user specified value (in sec)
• BOP type event counters on SS7
• counters by PDUs type on MTP, ISUP, TUP
• data-flow counters

Protocol Specification for Display

• SS7 Signaling  Links (protocol stack with 7 decoding levels):
  • BOP envelope, frame counts (FISU)
  • SS7 layers decoding:
    • MTP2/MTP3: ITU Q781/Q782
    • SNNP, SNTM, SCCP
    • TUP, TUP+, SSUTR2
    • ISUP: ITU Q784
    • TCAP
    • INAP-CS1
  • Full ASN1 decoding of  ISUP, SCCP, TCAP, INAP
• Event-Editor functions for events formatting and  filtering

Built-in ISUP Simulation Functions

Interface Management

• Simultaneous management on each interface of  2 types of  links:
  • PH-physical interface: E1 or T1 selection.
  • SS7 Signaling link: definition of  1 signaling channel (T1 or E1) for SS7 protocol,

Simulation Features

• Establishment of communications:
  • Generator and/or responder behavior
  • From 1 to 100  communications
• SS7 emulation parameters:
  • Signaling Point emulation
  • Protocols: ITU/ANSI

ISUP Automatic Simulation Behavior:

• Generator Configuration: from 1 to 50 independent outgoing communications defined by:
  • Delays and buffers for Initial Address, Subsequent Address Messages
  • Number of repetitions and delays between communications.
• Responder configuration:  Identical incoming calls defined by:
  • ACCEPT/REJECT behavior.
  • transmission option for : Address Complete, Answer, Call Progress, Connect, Release, Release Complete Messages.
  • From 1 to 100  communications
  • Delay before Response.
• All messages saved in a buffer defined by a user-friendly editor allowing to enter Mandatory Fixed Part, Mandatory Variable Part, Optional Part
• Manual commands for communications (IAM, SAM), Circuits (Blocking, Unblocking...) and Circuits group (Blocking, Unblocking...)
• Outgoing communications triggered by:
  • Starting delay.
  • Manual commands.

Emulation Functions

Physical Layer

• Emulation mode: Signaling Point.

MTP2 Layer: 

• Setting of Parameters (time-limits, length)

MTP3 layer:

• Setting of Parameters (numbering...)

SCCP layer:

• Setting of Parameters ( numbering...)

ISUP layer

•  Circuit configuration
•  Setting of Parameters (time-limits ..)

Programmable Simulation

API

• Use of CLARINET-Development C language
• Microsoft format library.
• Level N simulation using N-1 emulation on SS7 channel.
• Samples of Simulation User Programs:
  • OverISUP
  • OverMTP2

Conformance Testing Simulation

ETS

• A set of Executable Test Suites packages resulting from compilation of standard ATS, has been developed by Acacia.
• template of profiles, PICS/PIXIT
• execution under Clarinet Run-time

ATS

• The Clarinet  TTCN compiler and the stack of emulators allow the users to develop or customize new ETS.

Clarinet-system: Basic Configuration

Clarinet-System: SS7 Options

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Last modification: 27/02/04