LAN Transformer and Common Mode Filters, Various Specifications are Available

LAN (pulse XFMR filter), LAN-meter (RJ-45 + XFMR/LED)
Common mode chokes, V0IP XFMR, ISDN, T1, CEPT, XFMR ADSL line XFMR, VDSL XFMR/filter
Micro filter splitter (CO/CPE side) PoE (Power over Ethernet) drivers 10/100 base, 1,000 base-TX network filter modules T1/E1 SMD and DIP isolated transformers ISDN-U/S interface transformers T3/DS3, T4/DS4 isolated transformers ADSL interface transformers VDSL high-pass/low-pass filter modules and interface transformers
Similar to brands, such as pulse, both hand, Hallo, YCL and Delta