Desktop PCI Telephony (DPT)
(Desktop PCI - QuicKit Telephony)
DPT4 stands for Desktop PCI Telephony, 4-spans.
The DPT4 was the first generation of this product line.
It has been replaced by the next generation, DPT5 and DPT6 boards.
They are functionally equivalent except for:
- the DPT5 supports PCI clock speeds up to 66 MHz and is
compatible with PCI-X systems.
- the DPT6 is the PCIe (PCI express) equivalent of the DPT5.
- the DPT5 and DPT6 no longer support an H.100 interface
These full height, short length PCI bus plug-in boards provide
four T1/E1 interfaces for desktop workstations or servers.
It can either stream the four T1/E1 channels to the host
(with or without channelization) or process the data for each timeslot
in real-time using optional DSP expansion modules.
Either 12 or 24 TI 'C5420 DSP's can be added for compute-intensive
telephony applications.
These optional DM5420 smPCI modules
feature 12 dual-core fixed point DSP's.
An H.110 bus enables two or more DPT4 boards to transfer data among
themselves or with other PCI boards.
DPT Desktop PCI baseboard
(DPT4 shown)
Line Interfaces
The DPT4/5/6 boards use 4 PMC-Sierra PM4351 COMET line
interface/framer chips that can operate in E1 or T1 mode.
This highly configurable device supports all current E1 and T1 standards
and can operate both in long-haul and short-haul applications.
DPT boards may be ordered with either 75 or 120 ohm impedance
for E1. The 120 ohm E1 configuration is software configurable
for 100 ohm T1 applications. It includes over-voltage surge
protection intended only for use with intra-facility T1/E1 lines,
and not for lines that are exposed to lightning and/or power cross faults.
The DPT5 and DPT6 are currently only available with RJ45 endplate jacks.
Contact CAC if you require BNC or Triax connectors.
The DPT4 was available with several endplate jacks: RJ45, BNC or
triax. The triax jacks are used with shielded twinax cables
terminated with Trompeter PL75 (or equivalent) connectors.
With BNC or triax connectors, the four on-board jacks may be
configured by shunts to support four receive-only or four
transmit-only E1/T1 circuits or two bidirectional circuits.
To support four bidirectional circuits, the DPT4 includes four
2-pin headers that may be used to connect to four additional
jacks mounted on an adjacent PCI bracket or elsewhere on the chassis.
Local Processor
The DPT boards include a 100MHz MIPS processor subsystem based on the
RC32364 chip from IDT. The subsystem includes 16MB of global
SDRAM, 2MB of flash memory, interfaces to the 4 COMET chips and
a PCI interface. The purpose of the MIPS processor is to manage
the COMET chips and to assist with any required channelization
(multiplexing and demultiplexing) of the E1/T1 streams.
The workstation processor generally communicates with the MIPS
processor rather than directly with the E1/T1 framers. The MIPS
PCI interface includes a DMA controller that is responsible for
transferring E1/T1 data between workstation memory and MIPS memory.
Software
CAC provides MIPS and workstation processor executables to support
user access to the E1/T1 lines. Available styles include:
- Full channelization. Each E1/T1 timeslot is opened,
read and/or written as a distinct stream.
- Arbitrary bonding. Multiple timeslots can be combined
in arbitrary ways to create higher-speed streams.
- Unchannelized. Each E1/T1 line is accessed as a single stream.
For T1, the framing bit is not part of the stream.
For E1, timeslot 0 can be part of the stream or not, as desired.
Also for E1, an unsynchronized mode is available in which no E1
framing is present in the E1 signal.
- HDLC processing: Limited handling for HDLC channels
by the COMET chips and the MIPS processor will provide
for typical D channel usage for ISDN PRI signals.
DPT4, DPT5 and DPT6 support host operating systems for:
- Linux (kernel 2.4 & 2.6 on x86 or ia64 platforms)
- Solaris versions 2.6 - 2.10 on Sparc and Intel x86 platforms
- Windows 2000, 2003 & XP (reported to work with
32-bit Windows Server 2008)
Specifications
| Processor | IDT 32364 MIPS |
| MIPS Clock (MHz) | 100 |
| SDRAM (MB) | 16 |
| PCI board style | Full height, short |
| PCI Bus Clock (MHz) | 33 or 66 MHz |
| PCI bus width | 32 bits, address & data |
| PCIe width | 1 lane |
| PCI voltage | Universal |
| MTBF (kHr) | 190 |
| +5v power (A) | 1.5 Amps |
| Size (inches) | 6.875 x 4.2 |
|
| Common Part Numbers: | Connectors and options |
| DPT5 PC5C00 |
shielded RJ45, smPCI support |
| DPT6 PC6C00 |
shielded RJ45, smPCI support |
| DPT4 PC4C00 |
shielded RJ45, smPCI support |
| DPT4 PC4400 |
shielded RJ45 |
| DPT4 PC4200 |
Triax connectors |
| DPT4 PC4900 |
BNC connectors, smPCI support |
| DPT4 PC4900 |
Triax connectors, smPCI support |
| DPT4 PC4B00 |
RJ45 connectors, smPCI support |
Pease tell us about your
configuration requirements.
We would be happy to contact you.
Product Brochure
in PDF format.
Back to top
|
