BlackTube SER RS232
Encrypted RS232 Over IP


Flexible Encrypted Serial Data Extensions over IP Packet or MPLS Networks

The BlackTube SER RS232 converts RS232 serial data connections into AES encrypted IP packets, securely 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 packet interconnection of Serial: Bulk Encryptors (KIV7/OMNI), Data Terminals, Data Acquisition, SCADA RTUs....

Encrypted Serial over IP
Integrating encryption into the Engage's serial to packet converter means serial control and monitoring traffic is never “in the clear” on the packet network. Additionally, since encryption is done at the source prior to transport over the primary or redundant packet networks, the expensive and complexity of external in line Encryptors is eliminated.
Layer 1 with Isochronous
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 timing alignment. A configured number of incoming packets are buffered in order to compensate for the peak packet delivery jitter introduced by the network.
Asynchrous 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, are transported within IP packets as HDLC over IP. The Serial to Packet conversion only occurs when HDLC frames are active.


 BlackTube SER RS232 Standard Features
Dual LAN Interfaces
All BlackSER RS232 models ship with two 10/100BaseT Ethernet LAN ports. The two Ethernet interfaces provide for:
• Management interface on LAN port 2 when LAN port 1is connected to a VPN tunnel
• Protector Option for Redundant Packet Path connections with Constant or Switch Over Criteria
Assured Delivery Protocol
In order to assure high quality communications over links with intermittent or noisy performance, such as Wireless, the Black•SER RS232 employs Engage’s robust Assured Delivery Protocol with the following benefits:
• Packet out of sequence detection and re-sequencing
• Duplicate skipping
• Lost packet retransmissions with configured delay
BlackTube SER RS232 Optional Features

Protector OPTION -PRO
The protector option utilizes the second LAN interfaceas a redundant path for the interconnection of the IP encapsulated SER RS232 data. The extension of the SER RS232 has a fault tolerant link that is configured to always on, or with switch over criteria.

Serial Redundancy OPTION -Y
The Serial Redundancy option is used to switch the RS232 connection to a secondary IPTube in the case of a network or equipment failure maximizing network availability by providing complete hardware redundancy for mission critical applications.

Engage Communication
9565 Soquel Drive. Aptos, CA 95003

Telephone: 1-831-688-1021
Toll Free : 1-877-ENGAGE4
Designed, Fabricated, and Assembled
in America 
Supported Worldwide