Virtual Access

Async Support

• Provided via SMG
• Ethernet 10/100 Mbps, RJ45
• Interface: RS-232, 8-pin RJ45
• RS-232: TxD, RxD, RTS, CTS, DTR, DSR, GND, DCD
• Speed: 50 bps to 230.4 Kbps
• Protocols: IP, XMP

PPP Aggregation

• MLPPP - RFC 1717
• BACP - RFC 2125
• PPPoE - RFC 2516, RFC 1483
• PPPoA - RFC 2364

ATM

• RFC 1483, RFC 2364
• UNI version 4.0 PVC
• Used for PPP only

X.25 Layer 2

• LAPB, LAPD, DTE/DCE supported
• 4095 VCs per physical link
• ISO 8028 gateway DTE
• ISO 8208 public DCE

X.25 Layer 3

• X.25
• X.75
• Packet sizes 16-4096 bytes
• PSN, WSN, Q-bit
• Interrupt data
• Modulo 8
• Full facility support
• CUG validation support
• D bit, throughput class, fast select, reverse charge
• ICRD
• CLAMN,
• Transit delay

Facilities

• Closed User Group (CUG)
• SVC
• Hunt Groups
• Call redirection
• One way logical channel
• Incoming/outgoing
• Incoming/outgoing calls barred
• Incoming international calls allowed
• Outgoing international calls allowed
• Packet size
• Window size
• Fast select
• CUG selection
• International/Internetwork traffic

SNMP

• SNMP v1 - RFC 1157
• MIB II - RFC 1213
• VA Enterprise MIB

XOT

• X.25 over TCP/IP

XMP

• X.25 migration protocol

FROT

• Frame Relay over TCP/IP

TCP Sessions

• 2000 (4000 license option)

LAPD PLLs

• 2000

X.25 VCs

• 4000
• 2000 if the AOS is used as a route server

Supports up to 2000 users over IP

• A user is an SMG or an LAPD PLL.

The AOS is delivered on a compact PCI (cPCI) hardware platform, which is widely used in telecommunications environments. The system supports hot swap, enabling cards to be replaced with the power on and without interrupting traffic.

Management

Direct management of the AOS is supported using a Windows management application, which connects to the AOS over TCP/IP. The management application supports configuration and diagnostic functions. SNMP is used for event and status functions. Per-subscriber configuration support is provided by the Virtual Access Activator Management System.

Power Input

• Triple redundant load-sharing PSU options
• Multi voltage 100v to 240V AC or 48v DC
• Power consumption 140 watts max

Analogue Leased Line

• FXS/FXO
• 2/4 wire E&M
• 2/4 wire ETSI
• G.711 transport over IP

 Analogue lease line uses a different chassis to that shown above.Please see the AOS Analogue datasheet for more information.

Interfaces - Quad T1/E1 PHI (4)

• Physical 100 (T1)/120(E1) ohm RJ45
• Conforms to ETSI ISDN packet handler access point interface (PHI) as follows:
• 1.544Mbps (T1) or 2.048Mbps (E1)
• Semi-permanent Bd channels presented on PCM-24 (T1) or PCM-30 (E1) system
• 24 timeslots per port (T1)
• 31 Bd channels per port (E1)
• D-ch, Pre-allocated Logical Link access (PLL)
• Sub-bundle operation supported
• Supports channelised and nx64 fractional mode
• Bd continuity check procedures
• Supports layer 2 auto LIC detection

Single ATM (1)

• STM-1 presented on single mode or multi-mode fibre

Quad Ethernet (4)

• 4 port Ethernet with autosensing 10/100 BASE-T presented on RJ45

Quad PRI (4)

• Physical 120ohm RJ48
• Used for PHI and PPP support only

CPU Card

• CPU: Pentium M 1.6GHz with 2MB L2 cache
• RAM: 1GB PC2700 DDR SDRAM
• Storage: 64Mb Flash (2Gb option available)

Operating Temperature

• 0–40º C

Relative Humidity

• 5–95% @ 40º C

 Vibration

• 1.0G @ 10 to 330 Hz

Chassis

• Compact PCI, 8 slot IEEE 1101.11 compliant
• Conforms to PCI 2.1
• Weight 14.5kg

Dimensions

• 177mm H(4U) x 304mm D x 483mm W