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Additional PAT Hardware: Mini-PAT ] MultiDialer ]


The Pacts 128 is the standard for CDR switch testing.

With 16 to 128 lines available for testing it is flexible enough to meet the needs of most switches.


Detects call progress tones

Detects standard milliwatt tone

Detects error tones

Detects fax/modem & voice

Detects a variety of other tones

All test data are uploaded to PAT for off-line testing 

Firmware is upgraded automatically

Test calls can be monitored on a secure line

The basic PACTS128 contains all the equipment necessary to call from 16 originating lines and eight incoming 1004 Hz lines. Modules can be added as needed to increase capacity to 128 outgoing and 16 incoming lines. The unit consists of a CPU-Speech-Modem module, power supply module, line monitor module, up to two 8-line milliwatt termination modules, and up to eight 16-line switch modules. The PACTS128 is accessible through the CPU-Modem-Speech module from a PC running PAT System software and equipped with a modem. The unit also is equipped with an RS232C interface for connection to an external computer.

The 14-slot Rack-Mount Chassis is fully wired. The chassis occupies six vertical inches and fits in a standard 23-inch bay; adapters are supplied for 26-inch bays. The chassis is designed with an open slot wired for future use so the unit can easily keep pace with advances in technology.

The CPU-Modem-Speech module is equipped with DSP technology to detect SIT, call-progress, and various other test-circuit tones. The unit also can detect the presence of speech and play back a digitally recorded message. Each connected line is checked for tip and ring reversals.

The 8-line Milliwatt Termination Module generates the 1004 Hz tone commonly used for testing. This module is required to verify routing and billing on intra-office codes, since most switches normally do not bill for intra-office calls to tone trunks. Fixed- and unlimited-length versions are available.

The Power Supply module converts the 48vdc central office supply to the 12vdc needed by the PACTS128. Other power supplies also are available.

The 16-line Telephone Interface module connects one of 16 individual telephone lines via solid state relays to the common line circuit on the CPU-Modem-Speech module.

The Line Monitor module allows the user making calls from the remote location to "listen in" on the calls as they are placed. The monitor line is secure and cannot be used for two-way communication.

telecom revenue assurance