Click image for larger view!
Nortel Norstar 3X8 KSU DR5.1 NT5B05CP-93 Norstar 3X8 with DR5.1 software with Power Supply The Norstar 3x8 control unit can support up to 3 lines and 8 telephones. The 3x8 DR5.1 has built in caller ID. All Norstar phones will work with the 3x8 system including the T7406 and M7410. All analog terminal adapters will work with DR5.1 software. Power Supply Included