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3300 ICP Hardware User Guide
92 Release 3.3
CEPT Link
The CEPT digital link complies with the European standards specified by the CCITT
(International Committee for Telephone and Telegraph) G703 and G734. The technical
characteristics of the CEPT link are:
• thirty 64 Kbps traffic channels
• two 64 Kbps framing and signaling channels
• eight consecutive bits per channel
• channel sampling rate: 8,000 Hz.
• total bit rate: 8000 frames/second X 8 bits X 32 channels = 2.048 Mbps.
CEPT Interface Assembly Jumpers
There are four jumpers and eight jumper positions (J06 to J13). Jumper positions J06 to J09
allow you to ground the shields of the coaxial cable connectors, and jumper positions J10 to
J13 provide a location to affix the jumpers if they are not in the grounding position.
Conference Card
The Conference card provides 64 channels of conference capability. No more than five parties
are allowed per conference. The Conference card is optional because conference capability is
provided on the system Controller. If the Conference card is installed, the conference capability
on the Controller is superseded.
Note: Jumpers J06, J07, J08, J09, J11, and J12 are located beneath the side of the faceplate. Use
needlenose pliers to change the positions of these jumpers.
CEPT Interface Assembly Connector Shield Grounding
Circuit 0 Circuit 1
RX grounded jumper across J06 RX grounded jumper across J08
RX not grounded no jumper across J06 RX not grounded no jumper across J08
TX grounded jumper across J07 TX grounded jumper across J09
TX not grounded no jumper across J07 TX not grounded no jumper across J09
Note: Default settings are shown in bold.
Conference Card Specifications
Conference Channels 64
Power Consumption 15.6 Watts
Features Provided Flexible assignment for up to 64 channels of conference
Up to five conferees per conference
Conferencing of both symmetrical and asymmetrical terminals
Conference control memory provided by three DX chip output links
On-board RAM for accumulator buffer
On-board RAM for frame buffer (128 K)
On-board attenuation control by ROM
A-law and µ-law PCM translation via ROM lookup