Page 636 of 906 NT8D15 E&M Trunk card553-3001-211 Standard 3.00 August 2005Figure 145E&M Type II signalingÐ 48VSGEMSBÐ 48VSGEPPMSB553-6259Note: M, SB, E, and SG designations are Electronic Industries Association andTelecommunications Industries Association (EIA/TIA) conventions. These leads arealso known as MB, MA, EA, and EB, respectively.