Measuring instruments for digital communication


Oi Electric has been producing measuring instruments loaded with advantageous features by employing its unique technology.


POINT (1) Developing wide-ranging types of measuring instruments
We develop and provide a wide range of measuring instruments, which cover applications for telephones and facsimiles, digital communication devices that make full use of advanced technologies, and wireless related devices.

POINT (2) Contributing to customers through capabilities to support various communication lines
We provide measuring instruments applicable to various communication lines, such as VoIP networks, public networks, high-speed digital leased lines, and 3.4 kHz-band leased lines.

POINT (3) Providing easy-to use product shapes and functions
We provide measuring instruments designed in thorough consideration of on-site workers' operability, including mainly hand-held type measuring instruments with enhanced usability.

Model Name :

This instrument is used to maintain ISDN lines in communication equipment and analyze their failures.
It can analyze a maximum of eight lines, including the line switching procedures of BRI and PRI lines, as well as record audio signal packets in such lines for an extended period.

Model Name :

This is a line tester best suited for the circuit opening testing of VoIP gateways, including for the “Hikari Denwa” service.
DNT-302B has been newly launched as a successor to ISDN Line Tester DNT-302.
It has made caller ID display possible when a call is received.