The serial ports support a wide range of user and network protocols, including SNA, async, X.25 and Frame Relay at line speeds up to 2.048 Mbps.

Three types of plug-in Serial Port Modules are available to meet the demands of evolving networks. Each module provides a single port that conforms to V.24 (EIA-232D), V.35 or X.21 standards, and can be mounted in any of the chassis' eight slots. A serial expansion module (SEM) may be required. Up to eight Serial Port Modules can be supported by the Climax950, Climax960 and Climax2000.

Operational Features

• Supports a wide range of user devices and protocols including Frame Relay, X.25, SNA/SDLC, Async, PPP or Transparent HDLC per port providing ability to change protocols quickly, just by changing the port configuration.
  
• Provides access, concentration and switching for Frame Relay and X.25 networks for full networking flexibility.
  
• Fully SNMP-manageable using CXView, Asce Networks' Java-based management system for monitoring, statistics collection and billing information.
  
• Configurable using Asce Networks' user friendly object-oriented graphical user interface, CXTool.
  
• Requires SEM (serial expansion module) when installed in slots 5 to 8.

PROTOCOL SUPPORT

Frame Relay (V.35, X.21, V.24)

• From 16 to 4000 active DLCIs per Climax950.
  
• Up to 256 remotes for routing and bridging.
  
• Full link management support LMI, Annex D, Annex A; also configurable without link management (link always active).
  
• Auto-LMI detection for "plug and play" configuration.
  
• Supports UNI-U, UNI-N, NNI
  
• Extensive statistics per port and per circuit.
  
• Full congestion management per port and at the DLCI level using CIR, Bc and Be to ensure timely transmission of critical data.
  
• Voice packet recognition capability to avoid discarding or delaying voice packets.
  
• Data compression option to optimize bandwidth usage.
  
• Supports RFC 1490 multiprotocol encapsulation and PVC consolidation to optimize DLCI usage and reduce recurring line costs.
  
• Multicast one way, two ways, n ways.
  
• Alternate routing per circuit provides redundancy to ensure network uptime.
  
• Dial back-up support (by analog modem or ISDN).

SNA/SDLC (V.24, V.35, X.25)

• SNA/SDLC local spoofing to reduce overhead on network.
  
• Up to 128 controllers per unit.
  
• Physical unit emulation: PU1, PU2, PU2.1, PU4 and PU5.
  
• SDLC to Frame Relay conversion and encapsulation; SDLC-LLC2 conversion; LLC2/BNN (Boundary Node Network); LLC2/BAN (Boundary Access Node); SDLC to QLLC/X.25 over Frame Relay.
  
• SDLC to ATM

X.25 (X.21, V.24, V.35)

• At X.25 Link Level, supports LAPB, DTE or DCE; Modulo 8 or 128.
  
• At X.25 Network Level, supports Modulo 8 or 128, X.121 addressing; SVCs, PVCs; M, D, and Q bits.
  
• CCITT X.25 facilities including flow control negotiation; throughput class negotiation; incoming/outgoing calls barred; one-way LCs incoming or outgoing; CUG (Closed User Group); reverse charging and reverse charge acceptance; local charge prevention; charging information; fast select and fast select acceptance; NUI (network user identification); Hunt group; call redirection; transit delay indication; packet size from 16 to 1024 bytes.
  
• X.25 to ATM

Async (V.24, X.21, V.35)

• Supports CCITT recommendations X.3, X.28 and X.29
  
• Async to X.25 PAD support
  
• Async to Frame Relay (async to X.25 over Frame Relay)

V.24 Serial I/O Module

X.21 Serial I/O Module

V.35H(North America)

V.35EU(European Union)

Specifications