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BlackTube RS232 CEP

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Black Tube CEP RS232scaled

Flexible Serial Data Extensions over IP Packet or MPLS Networks

The BlackTube CEP RS232 converts RS232 serial data connections into AES encrypted IP packets, extending the serial data
over very cost effective Ethernet or MPLS based LAN/WAN/MAN wired and wireless networks. Synchronous, Asynchronous,
Isochronous or HDLC serial data is encrypted then encapsulated into IP packets. This facilitates the interconnection of Serial
Data over IP between Serial Bulk Encryptors (KIV7/OMNI), Data Terminals, Data Acquisition Systems, WAN Routers and Bridges
and SCADA RTUs.


Layer 1 with Isochronous Support
In Layer 1 operating mode every bit is encapsulated into an IP packet. The size and frequency of the IP packets can be set
with data bit rates from 75 bits to 256 kilobits per second. Isochronous serial protocols, such as Conitel, are transported
synchronously to maintain message alignment. A configured number of incoming packets are buffered in order to
compensate for the packet delivery jitter introduced by the network. The size of the Tube bit buffer is configurable to
accommodate the peak amount of jitter.


Asynchronous Over IP
Asynchronous characters from the RS232 interface with 5 to 8 data bits, baud rates from 1.2 to 38.4 kilobits, 1 or 2 stop bits
that are with or without parity are efficiently encapsulated into IP packets. The encapsulation supports block mode transfers
to minimize the bandwidth required. Additionally the latency is controlled by setting the Tube Bytes per packet.


HDLC Over IP
In Layer 2 operating mode HDLC Data frames, such as those used by Wide Area Networking protocols PPP and Frame Relay
or proprietary Data Links, are transported within IP packets as HDLC over IP. The Serial to Packet conversion only occurs when
HDLC frames are active.


SCADA Protocol Transparency
The BlackTube CEP transports Bit or Byte orientated SCADA protocols transparently because of its unique TDM circuit emulation
capability. RTU transmit data is encapsulated into IP packets at 64,000 samples per second and de-encapsulated at the

 

Black Tube CEP RS232 diagram

 

Assured Delivery Protocol
In order to assure high quality communications over links with
intermittent or noisy performance, such as Wireless. 

• Packet out of sequence detection and re-sequencing
• Duplicate skipping
• Lost packet retransmissions with configured delay
Protector OPTION -PRO
The protector option utilizes the second LAN interface
as a redundant path for the interconnection of the IP
encapsulated RS232 data. The extension of the RS232 has
a fault tolerant link that is configured to always on, or with
switch over criteria.