Nortel Networks Option 11C User Manual
Page 378 of 544
NT8D14 Universal Trunk Card
Functional description
The Universal Trunk Card:
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allows trunk type to be configured on a per unit basis
•
indicates status during an automatic or manual self-test
•
provides card-identification for auto configuration, and to determine the
serial number and firmware level of the card
serial number and firmware level of the card
•
converts transmission signals from analog-to-digital/digital-to-analog
•
operates in A-Law or µ-Law companding modes on a per unit basis
•
provides software selected terminating impedance (600, 900, or 1200
ohm) on a per unit basis (1200 ohm supported for RAN trunks only)
ohm) on a per unit basis (1200 ohm supported for RAN trunks only)
•
provides software selected balance impedance (600 ohm or complex
impedance network) on a per unit basis
impedance network) on a per unit basis
•
interfaces eight PCM signals to one DS-30X timeslot in A10 format
•
transmits and receives SSD signaling messages over a DS-30X signaling
channel in A10 format
channel in A10 format
•
supports PCM signal loopback to DS-30X for diagnostic purposes.
Trunk types supported
The Universal Trunk Card has eight identical units. You configure the trunk
type of each unit independently in the Trunk Data Block (LD 14). The card
supports the following types of trunks:
type of each unit independently in the Trunk Data Block (LD 14). The card
supports the following types of trunks:
•
Central Office (CO), Foreign Exchange (FX), and Wide Area Telephone
Service (WATS)
Service (WATS)
•
Direct Inward Dial (DID) and Direct Outward Dial (DOD)
•
Tie Two-way Dial Repeating (DR) and Two-way Outgoing Automatic
Incoming Dial (OAID)
Incoming Dial (OAID)
•
Paging (PAG)