Nortel i2022 Series User Manual page 59

S Interface – The 4-wire interface between the ISDN telephone and the NT1. In the i2022 it is the same point as the T
Interface.
Shared Call Appearance (SCA) – A Call Appearance that appears on more than one ISDN telephone. Similar to an
extension phone in an analog telephone application.
Service Profile Identifier (SPID) – A code programmed into the telephone and used by the switch to identify the
configuration used by the telephone. The SPID is usually the PDN plus 0101.
T Interface – See S Interface.
TP Packages – A set of translations that the telephone company may offer. The TP packages offer a variety of commonly
used features in an easy order package.
Terminal Endpoint Identifier (TEI) – A code used by the telephone to identify it to the switch. The i2022 uses Automatic
(Dynamic) TEIs.
U Interface – The 2-Wire interface between the U Interface Module and the telephone company line.
Volatile (memory) – Information which is stored in the telephone which will be lost when power is removed from the
Teleset.
i2022 ISDN Teleset
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