SPG950 Bit Error
Rate Tester (BERT) 

Prices start under $6K

The SPG950 Bit Error Rate Tester (BERT) is an economical alternative to expensive test sets for debugging DS1, DS3 or 10/100BaseT problems.  The SPG950 gives you performance monitoring on its inputs and selectable test signals (including pass-through) on its outputs.  The SPG950 comes with an AC power unit and several patch cords, all in a light-weight carrying case.
This kit contains: SPG950 handheld unit AC Auxiliary Power Unit Operations Manual (1) BNC-BNC DS3 3-ft. cable (1) BNC-LCP DS3 3-ft. cable (1) Bantam-Bantam DS1 3-ft. cable (1) RJ45 - RJ45 LAN Patch Cord (1) DB9-DB9 connector cable for the RS232 port (6 feet)	Interfaces: Two 75-ohm, BNC male Two DS1 bantam-310 jack RJ45 modular jack 9-pin, RS232 DB-9 male plug. Power: four AA NiMH batteries; up to 2-hours per charge – or run on the AC power unit Operator Controls: On/Off switch LCD display Eight tactile switches.
Features: DS1 performance monitor (LOS, LOF, AIS, SF/ESF, LCV count, frame error count, ESF CRC error count). DS1 output signal (SF/ESF, PRBS, AIS, pass through) with selectable error injection. DS3 performance monitor (LOS, OOF, AIS, M23/C-Bit, B3ZS count, frame error count, P-Bit/CP-Bit error count). DS3 output signal (M23/C-Bit, PRBS, AIS, pass through) with selectable error injection. 10/100BaseT performance monitor (LOL, CRC count). 10/100BaseT output signal (pass through, provisionable test signal) with selectable error injection. Lightweight and portable. Simple operation. Hard-copy reports