ISDN handheld tester with comprehensive options: the ARGUS 125 tests all ISDN interfaces including BRI, PRI and E1 without having to swap modules. It tests voice connections via ISDN and POTS. In addition, the handheld tester provides all functions necessary for installing and maintaining BRI S/T and U, as well as POTS accesses.

The ISDN tester supports D channel monitoring in TE, NT and leased line modes. In addition, a bit error rate test (BERT) can be performed in the D channel. An optional MegaBERT is also available expanding the BERT to cover the full 2Mbit/s bandwidth.

If desired, the ARGUS 125 can also be equipped for testing in Next Generation Networks in order to check Voice over IP (VoIP) and data services directly at the ADSL and Ethernet interfaces.
The ARGUS 125 is extremely user-friendly thanks to its intuitive and clear menu structure.