We offer a wide range of carefully selected OC-12/STM-4 test sets from leading manufacturers. Our independent experts will work with you to understand your needs and explore all the options to find the best test and measurement equipment solution for you. All our equipment is available to rent or lease with a range of financial solutions to help you access the equipment you need without the high cost of ownership or needing to make a large capital investment. We also offer used and Certified Pre-Owned equipment, providing options for any budget. Browse our range of OC-12/STM-4 test sets below.