RAD APD-2HS Miniature FRAD/X.25 PAD  
 

 Features

• 2-channel async Packet Assembler/Disassembler (PAD/FRAD)
• One synchronous Frame Relay or X.25 link
• X.32 for dial-up modem
• SNMP management via RADview application on a PC station
• Synchronous link data rate:
  APD-2: up to 64 kbps
  APD-2HS: up to 256 kbps
• Async channels data rate: up to 115.2 kbps
• Synchronous link interfaces:
  APD-2: V.24/RS-232
  APD-2HS: V.24/RS-232, V.35

Description

ASYNCHRONOUS CHANNELS

• Both channels are configured and monitored by the built-in management agent. The async channels can act according to X.3, X.28, and X.29 profiles. Async traffic can be packetized directly over the Frame Relay network, or packetized over the X.25 protocol and encapsulated over a Frame Relay network.

• The asynchronous channels operate at data rates from 75 bps up to 115.2 kbps.

• Hardware flow control.

FRAME RELAY

• APD-2/2HS provides access to public or private Frame Relay networks. Async traffic is sent over the Frame Relay network, either directly over Frame Relay, or async to X.25 over Frame Relay (reliable async transfer over Frame Relay, Annex G). See Figure 2.

• A unique funneling method controls network congestion and moderates feeder throughput speed.

• LMI and ANSI PVC management protocols are supported, and operation is in compliance with ANSI T1.606, T1.618, T1.617 Annex D and ITU Rec. Q.922, Annex A.

X.25

• X.25-configured links support permanent virtual circuits (PVCs) or switched virtual circuits (SVCs). Link packet size is up to 4096 bytes.

• APD-2/2HS supports both mandatory and additional ITU X.2 facilities.

• Dial-up X.25 links are supported via a dial-up modem controlled by a DTR signal.

X.32

• APD-2/2HS supports X.32 protocol, which enables users to access the X.25 network from an extended distance via a dial-up modem. The X.32 protocol supports V.25 bis commands.

NETWORK MANAGEMENT

• An integrated management agent can be accessed from any point in the network through an X.25 address or can be managed locally via a control port.

• The management agent enables configuration, compilation of statistics and status reports, and diagnostics. The management agent can be programmed to periodically send statistics and status reports for up to five address locations in the network, for updating purposes. An alarm event can also be transmitted.

• APD-2/2HS contains an SNMP agent that allows access from any point in the X.25 / Frame Relay network via the IP address.

• Configuration, monitoring and controlling of all network resources can be performed from a RADview-PC SNMP management station.

• The SNMP agent supports private and standard MIBs, including MIB II with RFC 1213, RFC 1381 and RFC 1382 for X.25, and RFC 1315 for Frame Relay.

APD-2/*
2-port miniature PAD/FRAD

APD-2HS/*
2-port miniature high speed PAD/FRAD

External power supplies can be ordered separately:

PS-230/5/700
for stand-alone regulated 230 VAC to 5 VDC / 700 mA power supply

PS-115/5/700
for stand-alone regulated 115 VAC to 5 VDC / 700 mA power supply

APPLICATIONS