Download Hardware config - TierOne Telecommunications

Section 4: PERIPHERAL CARDS
Timing unit
The timing unit provides the transmission clock that is used
by the primary interface. The timing is derived from the
Digital Phase Locked Loop (DPLL), which is located on the
MPD card.
Digital signal processor (Call Progress Tone Detectors)
The digital signal processor (DSP) services all channels (24
channels on T1 and 30 channels on E1) simultaneously. The
digital signal processor detects dial tone, ring back tone,
busy tone and error tone and is used for the Automatic Dialer
and Automatic Redial features of the DIGITAL system.
Microcontroller
See Section 4.2 above, for peripheral card common
resources.
Memory unit
See Section 4.2 above, for peripheral card common
resources.
Jumpers
The T1/E1 card has one jumper. Jumper W1 is located
adjacent to the RJ45 connector, and is for future use.
EMI and Radio Frequency Interference grounds
See Section 4.2 above, for peripheral card common
resources.
Card connectors
The following connectors are mounted on the T1/E1 card.
•
DB15 connector
The female DB15 connector (JP1) is used to connect the
T1/E1 card to the Channel Service Unit (CSU) or network.
•
RJ48C connector
The female RJ48C connector (JP2) is one of the
connectors that is used to connect the T1/E1 card to the
Channel Service Unit (CSU) or network. This connector
appears only on style C0 and higher cards.
NOTE
The female RJ48C and DB15 connectors
are connected in parallel.
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