I have more of these Telematics brocures but I can't be bothered to scan them
Telematics Building Blocks
BUILDING BLOCK 1.0 S240 (DM3640) X.25 SWITCH
Description
The S240 (DM3640) Programmable Communications Processor can be configured for a number of different applications. The X.25 switch is one particular configuration that can have up to 12 high speed (64K) connections or 32 low speed (19.2K) connections or a mixture of the two.
Performance
The design factor used for
the packet switching capability of the box is 183 dpkt/s. This is based on
a packet size of 128 and a window size of 2 and X.25 Software version F0.
It should be noted that all permutations may not have been tested.
Availability
Not available at present.
Software
X.25 Switch Software.
Memory required: 4.0 Mbytes
Hardware
There are four different LPE (line processor expansion) cards that can be used in the configuration of a S240 X.25 backbone switch. A description of these cards is presented below:
+------------------------------+--------------+--------------+--------------+
| Description | Max. No. of | Port Speed | Max. No. of |
| | Cards/Box | | Ports/Box |
+------------------------------+--------------+--------------+--------------+
| 8 Port LPE card. | 4 | 19.2kbps | 32 |
| Interface: RS232C | |
| |
+------------------------------+--------------+--------------+--------------+
| 8 Port LPE card. | 4 | 19.2kbps | 32 |
| Interface: v.24 | | |
|
+------------------------------+--------------+--------------+--------------+
| 4 Port LPE card. | 3 | 64kbps | 12 |
| Interface: RS449 | | |
|
+------------------------------+--------------+--------------+--------------+
| 4 Port LPE card. | 3 |
64kbps | 12 |
| Interface: V.35 | | |
|
+------------------------------+--------------+--------------+--------------+
* LPE cards can provide Asynchronous and Synchronous capability.
5K7 Permutations
Possible combinations of low speed and high LPE cards.
+----------+-----------+ |Low Speed |High Speed | +----------+-----------+ | 4 | 0 | +----------+-----------+ | 3 | 1 | +----------+-----------+ | 2 | 2 | +----------+-----------+ | 0 | 3 | +----------+-----------+
The maximum number of high speed cards
that can be placed in a S240 is 3. The restriction arises due to the scanning
limit on the box. No low speed ports can be used if all twelve 64K ports
are utilised.
BUILDING BLOCK 2.0 S240
(DM3640) SDLC-XS PAD
Description
The S240 (DM3640) Programmable
Communications Processor can be configured for a number of different
applications. The SDLC-XS PAD is one particular application that can be
configured as a terminal or host pad. The DM3640 can support up to 12 high
speed (64K) connections, but SDLC-XS has not been tested.
Performance
The throughput capability of the S240
with this configuration has not been tested.
Availability
Not available at present.
Software
SDLC-XS Software.
Memory required: 4.0
Mbytes.
Hardware
There are four different LPE (line
processor expansion) cards that can be used in the configuration of a S240
SDLC-XS PAD. A description of these cards is presented below:
+------------------------------+--------------+--------------+--------------+
| Description | Max. No. of | Port Speed | Max. No. of |
| | Cards/Box | | Ports/Box |
+------------------------------+--------------+--------------+--------------+
| 8 Port LPE card. | 4 | 19.2kbps | 32 |
| Interface: RS232C | | | |
+------------------------------+--------------+--------------+--------------+
| 8 Port LPE card. | 4 | 19.2kbps | 32 |
| Interface: v.24 | | | |
+------------------------------+--------------+--------------+--------------+
| 4 Port LPE card. | 3 | 64kbps | 12 |
| Interface: RS449 | | | |
+------------------------------+--------------+--------------+--------------+
| 4 Port LPE card. | 3 | 64kbps | 12 |
| Interface: V.35 | | | |
+------------------------------+--------------+--------------+--------------+
* LPE cards can provide Asynchronous
and Synchronous capability.
Permutations
Possible combinations of low speed and high speed LPE cards.
+----------+-----------+
|Low Speed |High Speed |
+----------+-----------+
| 4 | 0 |
| 3 | 1 |
| 2 | 2 |
| 0 | 3 |
+----------+-----------+
The maximum number of high speed cards
that can be placed in a S240 is 3. The restriction arises due to the scanning
limit on the box. No low speed ports can be used if all twelve 64K ports
are utilised.
BUILDING BLOCK 3.0 S240
ACP20 (DM3140) ASYNC PAD
Description
The ACP20 (DM3140) is a multi-protocol
pad that can be configured for different applications. The ASYNC PAD is one
particular configuration that can have up to 16 asynchronous connections
with a single X.25 connection.
Performance
Throughput = 133.33/(packet-fill*0.111+/(1*0.270))
This is for a 9.6k line only (2 may be supplied for resilience).
Packet-fill has been tested over the
range 1 to 1024.
Availability
A five card unit will have an availability
of 0.99984, where MTTR = 5 hours. No MTBF figures are available from Operations
as the ACP20 has not been in service long enough. Calculated design MTBF
figures have been supplied by Telematics for various components of the ACP20
for a worst case guide, but is not guaranteed by BTTE.
Software
Async Pad Software.
Memory required: 0.5
Mbytes.
Hardware
There are two types of cards that
can be used in the configuration of an ACP20 ASYNC PAD. A description of
these cards is presented below:
It should be noted that there are
5 1/0 slots.
+--------------------------------+-------------+-------------+--------------+
| Description | Max. No. of | Port Speed | Max. No. of |
| | Cards/Box | kbps | Ports/Box |
+--------------------------------+-------------+-------------+--------------+
| 4 Port "QUAD" Async Card | 4 | 9.6 | 16 |
| Interfaces: v.24 or RS422/DCE | | | |
+--------------------------------+-------------+-------------+--------------+
| 2 Port "DUAL H/S" Sync Card | 1 | 76.8 | 1 |
| This card comes in 2 types | | | |
|* 1)Interfaces: v.24 or V.35/DTE| | | |
|+ 2)Interfaces: v.24 or V.11/DTE| | | |
+--------------------------------+-------------+-------------+--------------+
* Clock speeds provided at 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 76.8 kbps.
External clocking must be provided at all intermediate speeds.
+ No clocking provided.
Permutations
+------------+-----------+
|Async Ports |Sync Ports |
+------------+-----------+
| 1 to 16 | 1 |
+------------+-----------+
BUILDING BLOCK 4.0 S240
ACP20 (DM3140) SNA/SWITCH PAD
Description
The ACP20 (DM3140) is a multi-protocol
pad that can be configured for different applications. The SNA/SWITCH PAD
is one particular configuration that can have up to 10 synchronous port
connections.
Performance
The throughput capability of this
configuration has not been tested.
Availability
A five card unit will have an availability
of 0.99984, where MTTR = 5 hours. No MTBF figures are available from Operations
as the ACP20 has not been in service long enough. Calculated design MTBF
figures have been supplied by Telematics for various components of the ACP20
for a worst case guide, but is not guaranteed by BTTE.
Software
SNA/SWITCH Pad Software.
Memory required: 0.5
Mbytes.
Hardware
There are two types of cards that can be used in the configuration of an ACP20 SNA/SWITCH PAD. A description of these cards is presented below:-
It should be noted that there are
5 1/0 slots.
+--------------------------------+-------------+-------------+--------------+
| Description | Max. No. of | Port Speed | Max. No. of |
| | Cards/Box | kbps | Ports/Box |
+--------------------------------+-------------+-------------+--------------+
| 2 Port "DUAL H/S" Sync Card | 5 | 76.8 | 10 |
| This card comes in 2 types: | | | |
|* 1)Interfaces: v.24 or V.35/DTE| | | |
|+ 2)Interfaces: v.24 or V.11/DTE| | | |
+--------------------------------+-------------+-------------+--------------+
* Clock speeds provided at 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 76.8 kbps. External clocking must be provided at all intermediate speeds.
+ No clocking provided.
Permutations
Although the ACP20 can support up
to 10 synchronous ports, permutations have not been tested with SDLC-XS.
BUILDING BLOCK 5.0 ACP20
(DM3140) ASYNC/SWITCH PAD
Description
The ACP20 (DM3140) is a multi-protocol
pad that can be configured for different applications. The ASYNC/SWITCH PAD
is one particular configuration that can have from 4 asynchronous and 8
synchronous port connections to 16 asynchronous and 2 synchronous port
connections.
Performance
The throughput capability of this
configuration has not been tested.
Availability
A five card unit will have an availability
of 0.99984, where MTTR = 5 hours. No MTBF figures are available from Operations
as the ACP20 has not been in service long enough. Calculated design MTBF
figures have been supplied by Telematics for various components of the ACP20
for a worst case guide, but is not guaranteed by BTTE.
Software
ASYNC/SWITCH Pad Software. Memory
required: 0.5 Mbytes
Hardware
There are two types of cards that can be used in the configuration of an ACP20 ASYNC/SWITCH PAD. A description of these cards is presented below:-
It should be noted that there are 5 I/0 slots.
+--------------------------------+-------------+-------------+--------------+
| Description | Max. No. of | Port Speed | Max. No. of |
| | Cards/Box | kbps | Ports/Box |
+--------------------------------+-------------+-------------+--------------+
| 4 Port "QUAD" Async Card | 1 to 4 | 9.6 | 4 to 16 |
| Interfaces: v.24 or RS422/DCE | | | |
+--------------------------------+-------------+-------------+--------------+
| 2 Port "DUAL H/S" Sync Card | 4 to 1 | 76.8 | 8 to 2 |
| This card comes in 2 types: | | | |
|* 1)Interfaces: v.24 or V.35/DTE| | | |
|+ 2)Interfaces: v.24 or V.11/DTE| | | |
+--------------------------------+-------------+-------------+--------------+
* Clock speeds provided at 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 76.8 kbps. External clocking must be provided at all intermediate speeds.
+ No clocking provided.
Permutations
Possible combinations of Async "Quad" and Sync "Dual H/S" cards:
+-----------+----------+
| No. of | No. of |
|Async Cards|Sync Cards|
+-----------+----------+
| 1 | 4 |
| 2 | 3 |
| 3 | 2 |
| 4 | 1 |
+-----------+----------+
Example
If 10 asynchronous ports and 4 synchronous
ports are requested then 3 "Quad" cards and 2 "Dual H/S" cards will be
required.
BUILDING BLOCK 6.0 ACP20
(DM3140) SNA/SWITCH/ASYNC PAD
Description
The ACP20 (DM3140) is a multi-protocol
pad that can be configured for different applications. The SNA/SWITCH/ASYNC
PAD is one particular configuration that can have from 4 asynchronous and
8 synchronous port connections to 16 asynchronous and 2 synchronous port
connections.
Performance
The throughput capability of this
configuration has not been tested.
Availability
A five card unit will have an availability
of 0.99984, where MTTR = 5 hours. No MTBF figures are available from Operations
as the ACP20 has not been in service long enough. Calculated design MTBF
figures have been supplied by Telematics for various components of the ACP20
for a worst case guide, but is not guaranteed by BTTE.
Software
SNA/SWITCH/ASYNC Pad Software. Memory
required: 1.0 Mbytes.
Hardware
There are two types of cards that can be used in the configuration of an ACP20 SNA/SWITCH/ASYNC PAD. A description of these cards is presented below:-
It should be noted that there are 5 I/0 slots.
+--------------------------------+-------------+-------------+--------------+
| Description | Max. No. of | Port Speed | Max. No. of |
| | Cards/Box | kbps | Ports/Box |
+--------------------------------+-------------+-------------+--------------+
| 4 Port "QUAD" Async Card | 1 to 4 | 9.6 | 4 to 16 |
| Interfaces: v.24 or RS422/DCE | | | |
+--------------------------------+-------------+-------------+--------------+
| 2 Port "DUAL H/S" Sync Card | 4 to 1 | 76.8 | 8 to 2 |
| This card comes in 2 types: | | | |
|* 1)Interfaces: v.24 or V.35/DTE| | | |
|+ 2)Interfaces: v.24 or V.11/DTE| | | |
+--------------------------------+-------------+-------------+--------------+
* Clock speeds provided at 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 76.8 kbps. External clocking must be provided at all intermediate speeds.
+ No clocking provided.
Permutations
Possible combinations of Async "Quad" and Sync "Dual H/S" cards:
+-----------+----------+
| No. of | No. of |
|Async Cards|Sync Cards|
+-----------+----------+
| 1 | 4 |
| 2 | 3 |
| 3 | 2 |
| 4 | 1 |
+-----------+----------+
Example
If 10 asynchronous ports and 4 synchronous ports are requested then 3 "Quad" cards and 2 " Dual H/S" cards will be required.
Further Information
Other X.25 Equipment
Other PSS related pages
