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D i a l o g i c P C I L i n e c a r d s
1081-50821-00 Rev 01
October 2011
Dialogic D/240JCT-T1 PCI Linecard Technical
Specifications
Each Dialogic D/240JCT-T1 linecard provides voice channel support for one T1 link or span.
Installations that use ―robbed-bit‖ signaling, such as most OneBox applications, the 1.544-
megabit-per-second bit stream carried by each T1 span typically contains twenty-four 64-kilobit-
per-second voice channels, plus some additional signaling bits. The physical cabling for each T1
span includes two pairs of wires (transmit and receive), one pair for each direction in which the
bit stream must travel.
Although T1 spans can be fitted with connectors of various types, the end of the span that
connects to the D/240 card must have an RJ-
48C connector on it. The section, ―
D/240JCT-T1 PCI Linecards to the Telephone System
‖ later in this document provides a pin-out
of the RJ-48C connector for your reference.
Table 6 lists the technical specifications for the Dialogic D/240JCT-T1 PCI linecards approved
for use with OneBox. Figure 10 shows the general layout of the D/240JCT-T1 linecards.
NOTE
Your local telephone company may require some of these specifications. For example, in
the United States, some telephone companies require an FCC registration number if the
linecard is connected directly to central office (CO) lines. Contact your local telephone company
for its requirements.