Sltm32 - iPECS UCP Hardware Description & Installation Manual

iPECS UCP
Hardware Description and Installation Manual

3.1.8.3 SLTM32

The SLTM32 ( Single Line Telephone Module) allows standard analog Single Line Telephone
(SLT) devices access to CO Lines, other stations, and most features of the system through the
use of "dial codes". The SLTM32 provides interface circuitry for thirty-two (32) SLTs. Each
interface supports appropriate speech codec and compression functions, -48 volt DC feed circuit;
pulse and DTMF dial signal detection. A ring generator and message wait circuitry are integrated
in the SLTM32. The SLTM32 supports T.38 protocol for Fax over IP.
The SLTM32 allows Single Line Telephones to be connected up to 4 Kilometers (13,000 feet)
from the gateway using 24 AWG wire.
The SLTM32 includes a 10/100 Base-T Ethernet interface as well as packet voice processing
functions. The Ethernet port incorporates auto MDI, MDIX switching, therefore, both straight and
cross cables can be used.
As shown in Figure 3.1.8.3-1, the front panel of the SLTM32 has:

Sixteen (16) Dual color LEDs, one for status of two SLT ports
(Blue: Port 1 ~ 16, Yellow: Port 17 ~ 32)

Two (2) green power status LED
PWR1 - + 5 VDC
PWR1 - + 30 VDC

Two (2) Fan status LED

RJ-45 Female LAN connector with Speed and Link/Activity LEDs

DB-9 RS-232 connector

Normal/Service switch – In Service mode, circuits in use are busied as they return to idle

Reset Switch
On the rear panel, the SLTM32 has:

AC input connector

Ground Lug

Two (2) 25-pair RJ-21x connectors
Figure 3.1.8.3-1 SLTM32 Front & Rear Panels
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