Figure 216 "e and m type i – Nortel Networks 1000 User Manual

Page 654

654

NT8D15 E and M Trunk card

Figure 216
E and M Type I signaling

—

near-end seizure and outpulsing with M lead

—

ground detection with E lead

—

voice transmission through tip and ring for transmit and receive

•

4-wire, E and M Type I and II signaling, 2-way dial repeating with:

—

echo suppression for Type I signaling

—

switchable 7 dB and 16 dB pads for carrier interface

—

voice transmission and reception through two separate paths

—

Type I signaling through E and M leads

—

Type II signaling with near-end seizure by SB/M leads and far-end
detection by E/SG leads

•

4-wire, DX signaling (see

)

•

paging trunk operation (see

) with support access by low-resistance path at the PG/A1 leads.

Note:

Paging end-to-end signaling is not supported.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

02.06

Standard

27 August 2008