www.DataSheet4U.com CEPT/T1 TEW5502 is designed and approved to be used as an OUTPUT transformer in T1/CEPT applications with the following devices: Crystal Level One 61535A,61574A 61575, 6158A 304A, 305A Output Transformer Typical applications are: Primary rate ISDN network nodes. PBX or computer to T1/CEPT Digital Trunks. TDM Multiplexers. TEW5502 Complies with ANSI T1.408 and CCITT I.431 with regards to Longitudinal Balance. MECHANICAL 120 Ω 6 Top view Line .