ZiP X.25 PAD

International Standard Conformance: X.3, X.28, X.29, X.25, X.121

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The ZipPAD is a packet assembly/disassembly X.25 device (PADs). The primary functions of a PAD are to exchange information via data packet form with a remote PAD in the X.25 packet switch network, and to convert these data packet information to be a data character stream to the asynchronous equipment and vice versa. PAD works with local or remote asynchronous (by using modem) terminals and uses the synchronous modem, such as DSU, to connect to the X.25 packet network. In addition to mentioned above, it can be treated as concentrator or multiplexer

The ZipPAD , with its "extended PAD management functions and system commands", can be fully configured from any local or remote asynchronous terminal through a leased or dial-up line. These enhanced functions make your ZipPAD be easily handled and controlled. Its security is that the supervisor is only allowed to operate or use the extended PAD management functions and system commands.

The ZipPAD be easily connected to any public switching data network (PSDN) or private packet-switching network (PPSN). The ZipPAD can be specified to be a DTE or a DCE , and be back-to-back setting.

The ZipPAD provides a X.25 synchronous port or two optionally. These dual ports work in load-sharing mode, or in backup mode, or in fixed routing mode to improve performance and to enhance reliability.

The ZipPAD provides multiple architectures that meets your business needs. ZipPAD series, from PC's synchronous card , personal PAD to enterprise, with variable asynchronous ports to fit into your business needs.

Feature List

  • Standards: CCITT Data Link Layer, Packet Layer
  • International Standard Conformance: X.3, X.28, X.29, X.25, X.121
  • High quality, high speed (up to 64Kbps, ISDN B channel).
  • High Reliability
  • PVC, SVC online setting
  • Major international PDNs certified.
  • Extended PAD management functionss
    • Status monitoring
    • Call record log
    • Traffic statistics/trace
    • Port state control
    • Remote management
  • Password protection.
  • Transparent to most popular PC communication software
  • Support terminal emulation, file transfer, E-mail etc..
  • Modem signal controls for leased or dial-up operations.
  • Number of terminal ports extensible.


Technical Specification

CPU Intel 80188
HDLC Controller Z8530/8MHz, V.35/ RS449 (optional)
Input/output Interface
Synchronous Ports 1 or 2
Asynchronous Ports 2 or 4 or 8
Interface V.24/RS232, V.35/RS449 (optional)
Truck Speed 64Kbps
Clocking Internal or External
Leased or Dial-up modem
Link Level
Numbering Modulo 8 or Modulo 128
Parameters K:1 to 127, N1:21 to 4101 octets T1, T2, T3:100ms to 25 sec
Packet Level
Service PVC and/or SVC
Address Format ITU-T X.121, 15 digits
Packet Size 16 to 4096 octets
Flow Control Nego Yes
Window Size 1 to 127
Q/D/M Bits Supported
Parameters T20=180, T21=200, T22=180, T23=180
ITU-T X.25 Fully Support
ITU-T X.3/X.28/X.29 fully supports
Security password protection
Traffic Statistics supported
On-Line Help supported
Traffic Trace supported
Protocol Monitor supported
Temperature Operating 0 Celsius to 70 Celsiu
Dimensions 234 x 164 x 40 mm
Relative Humidity Operating 10% to 85%
Certification FCC part 15 class A; Telenet, USA; Pacnet DCI, Taiwan

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