iPECS UCP
Hardware Description and Installation Manual Issue 1.3
25
3.1.7 DTIMs (Digital Terminal Interface gateway Module)
3.1.7.1 DTIM8
The DTIM8 (Digital Terminal Interface gateway Module) supports eight (8) digital keysets (LKD
and LDP models). The multi-button Keysets have access to all the resources of the iPECS as
well as keyset functionality and simple one-button feature access. The DTIM8 contains a
processor for IP to TDM and signaling conversion as well as DSP circuitry to provide transcoding
for each channel.
Digital keysets can be connected up to 300 meters from the DTIM8 gateway using 24 AWG
twisted pair cabling.
The DTIM8 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 3.1.7.1-1, the front panel of the DTIM8 has:
Power jack for the AC/DC adapter; see 3.1.15 AD/DC adapter –G-
Two (2) green power status LEDs
PWR1 - + 3.3 VDC
PWR2 - + 30 VDC
Normal/Service switch – In Service mode, circuits in use are
busied as they return to idle
RJ-45 Female LAN connector with Speed and Link/Activity
LEDs
Eight (8) DKTU status LEDs, one for status of each DTIM
channel
DB-9 RS-232 connector
Reset Switch
On the rear panel, the DTIM8 has:
Eight (8) RJ-45 female connectors
Ground Lug
Fifty (50)-pin back plane connector
Figure 3.1.7.1-1 DTIM8 Front & Rear Panels
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