ISDN Premises Power

SEI is the leading supplier of uninterruptible power systems and NT1s for Digital Centrex (ISDN) customer premises equipment. All SEI units come fully assembled and ready to mount!

 

ISDN Premises Power

SEI is the leading supplier of uninterruptible power systems and NT1s for Digital Centrex (ISDN) customer premises equipment. All SEI units come fully assembled and ready to mount!

Other SEI Products

1145 Direct Replacements

The S1145B battery pack unit is a direct, snap-on replacement for failing legacy AT&T/Lucent 1145s. No rewiring is required. The S1145B monitors battery status to guarantee the holdover time of the battery.

• S1145B Battery Pack

REQUEST A QUOTE

24Vdc
48Vdc

REQUEST A QUOTE

24Vdc
48Vdc

ISDN Power Products and DC UPS Systems from SEI are available on our GSA Contract GS-35F-0487W

For order information or technical support call us at 301-694-9601 or email us using our Contact Us form

CONTACT US

ISDN Power Products and DC UPS Systems from SEI are available on our GSA Contract GS-35F-0487W

For order information or technical support call us at 301-694-9601 or email us using our Contact Us form