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DTIC 10-1
Octel 200/300 S.4.1PB60019−01
10.1 DIGITAL TRUNK INTERFACE CARD (DTIC) OVERVIEW
This chapter contains information specific to the digital trunk interface card (DTIC). Included are details
about hardware, installation, configuration, and maintenance and troubleshooting. The DTIC is not
documented elsewhere in this manual.
The DTIC is a 30-port line card designed to interface an Octel 200/300 to E1 trunks.
E1 trunks are the European “building block” standard for Wide Area Network (WAN) communication.
E1 is specified by CCITT and also standardized by ETSI. An E1 trunk can carry 30 simultaneous phone
calls plus signaling information. A port carries voice and data for calls. Each port can be viewed as a
“virtual” telephone connection where each end is either on hook or off hook.
For the DTIC to operate correctly, the following must be configured in the Octel 200/300:
- SYSTEM PARAMETER Table
- A COS must be configured for each of the 30 DTIC ports
- SLOTS Table
DTIC Hardware
The DTIC consists of two major processing components:
- The control processor (CP)
- Five digital signal processors (DSPs)
Refer to Figure 10-1 showing the layout of the primary components on the card.
To connect the Octel 200/300 to the PBX, use two 75-ohm coax cables. Be sure that the sw1 and sw2
switches on the card are set correctly to 75 ohms for U.S.A. and 120 ohms for Germany. Refer to
Figure 10-1.
Three kits are available.
Kit Name Kit Part Number Included in Kit
75 ohm DTIC−E1 Kit 740-6254-002 DTIC−E1 card, DTIC-E1 adapter (BNC version),
grounding strip, EMI suppression material, and
fastening hardware (does not include cables)
120 ohm DTIC−E1 Kit 740-6254-003 DTIC−E1 card, grounding strip, EMI suppression
material, and fastening hardware (does not include
cables)
DTIC−E1 Grounding
Strip Materials Kit
740-6255-001 Grounding strip and fastening hardware (does not
include cables)
Refer to the Installation chapter, DTIC Pin Assignment section, for the 50-pin telco connector pin
assignments for the DTIC. Refer to the Hardware Replacement chapter, DTIC Replacement section, for
the procedure for replacing/installing a DTIC.