Protection of T1 / E1 / J1 Ports
T1 / E1 / J1 lines are concentrated digital phone lines with bit rates of up to 2.0 Mbps. The data signals are low voltage but "phantom" powering schemes are often employed (as shown).
Two CO end options are shown. Each requires a ground referenced solution. The top is an unbalanced solution using 4 DO-214 devices and the bottom is a balanced one using a single 6-Pin SMT package. Regenerators are not ground referenced and use a simple metallic protection scheme as shown on the right. The TeleLink fuse is always used.
Other packaging solutions are offered within the Ruilon portfolio. For instance, all four P1800SCMC’s can be replaced by a single P1804UC. Thru-hole packages (TO-92's and TO-220's) also are available.
This solution is designed to comply with Telcordia's GR-1089 inter-building requirements.
Ruilon is the only vendor offering the 6-Pin MS-013 surface mount package.
Does not apply.