peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 351

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

6
As the DOC is a powerful device it is possible to show only a few of the possible system
configurations. Because the DSP is connected to one or to two CFI ports, which can be
programmed to operate in IOM-2 or in PCM mode, and the user also can program the
number of B-channels the DSP is supposed to use (n × 4 time-slots, n = 0 to 16), it is
difficult to count how many IOM-2 ports are fully or partly usable for layer-1 IC connection
– this strongly depends on the specific application.
6.1
The application is characterized by a high number of IOM-2 channels and a low number
of time-slots at the PCM highway.
6.1.1
In this mode, the DOC provides:
• 6 fully usable IOM-2 (GCI) Interfaces with 48 IOM-2 subframes (6 × 8) and thus it can
• 2 partly usable IOM-2 Interfaces, as the two DSP ports are connected to them.
• 4 PCM highways with 128 timeslots, as the two ELICs must be connected together.
Semiconductor Group
control up to 48 ISDN or 96 analogue subscribers.
Applications
DOC in a Small PBX
Small PBX with 2.048 Mbit/s Data Rate
6-1
Applications
PEB 20560
2003-08