Meridian Norstar
（重定向自Norstar）
![Newer Nortel T7316 Telephone, compatible with new BCM or older Norstar systems](/Images/godic/202501/30/Nortel_T7316_Telephone5035.jpg")
![Later Model Northern Telecom Norstar M7324 Switchboard Telephone](/Images/godic/202501/30/Nortel_M7324_5035.jpg")
![Current 1140E IP set for use on BCM and CS1000/2100 Nortel/Avaya systems](/Images/godic/202501/30/Nortel_1140E_IP_set5035.JPG")
![Model i2004 IP set that can be used on BCM and CS1000/2100 Nortel/Avaya systems](/Images/godic/202501/30/Nortel_i2004_IP_telephone5035.JPG")
The Meridian Norstar, later called Nortel Norstar was a small-office digital PBX introduced by Northern Telecom (now Avaya). It is based on the same internal design and instruction set as Nortel's earlier SL-1 and DMS systems, allowing it to support features such as integrated voice messaging (Meridian Mail), automatic call distribution and other features, but can support a total of up to 192 phones and has limited processing power. In the United Kingdom it is sold by British Telecom, rebadged as the BT Norstar.