Cisco AXIS Multiservice Concentrator

Product Overview

AXIS is a standards-based, integrated ATM multiservice concentrator. The AXIS multiservice concentrator provides aggregation of a variety of services to a standard ATM User-Network Interface (UNI) or Network-to-Network Interface (NNI) port. The AXIS multiservice concentrator can be used as an integrated or remote adjunct shelf for Cisco's ATM switch product lines. In addition, it can serve as a standalone unit that aggregates traffic for transmission to and from an ATM network.

AXIS multiservice concentrators and core cards adapt incoming data to 53-byte ATM cells using industry-standard ATM Adaptation Layers (AAL) for transport over the ATM network. By integrating narrowband and broadband interfaces on a single platform, service providers can fully utilize the node capacity, incrementally expand capacity as needed, and cost-effectively provide services to an almost unlimited number of subscribers.

Physical Design

The AXIS multiservice concentrator is a self-contained, 8.75-inch deep, 19-inch or 23-inch (5-rack unit), rack-mountable EMI (electromagnetic interference enclosure). The shelf chassis has 16 slots; each slot can accommodate a front and a back card. Six slots are reserved for common equipment modules. The other 10 slots are available for any service (I/O) module. The AXIS multiservice concentrator supports up to 80 T1 or E1 user interfaces, or up to 2480 64-kbps DS-0 interfaces.

The front cards are function modules--cards that perform complex functions; for example, Frame Relay-to-AMT conversion. Each function module (front card) can have a corresponding back card--a line module that provides physical interfaces to one or more transmission lines connected to the AXIS multiservice concentrator (for example, the trunk line to a BPX switch or eight customer T1 lines). The front card communicates with the back card via a "midplane." This midplane design allows replacement or upgrading without disturbing the physical cabling.

The chassis is powered by either -48 VDC or 220 VAC sources. The DC version includes DC power entry modules (optionally redundant) that can be mounted in the shelf. The AC version uses an external rack-mounted AC power module--also optionally redundant. Both versions use a rack-mounted cooling assembly. Multiple AXIS shelves can be mounted in the same rack, sharing power and cooling assemblies.

Multiservice Functionality

The AXIS multiservice concentrator allows organizations to reduce equipment costs, fully use trunking resources, protect their investments in existing premises equipment, and rapidly deploy new services as required. Services and interfaces supported include the following:

• Frame Relay UNI/NNI

  • 56 kbps, n x 64 kbps, T1, E1, HSSI, X.21

  • Frame Relay to ATM network and service internetworking

• High-speed Frame Relay

• ATM Frame UNI

  • 56 kbps, n x 64 kbps, T1, E1, HSSI, X.21

• ATM UNI/NNI

  • T1, E1, n x T1 (IMA), n x E1 (IMA)

• Frame forwarding

  • 56 kbps, n x 64 kbps, T1, E1, HSSI, X.21

• Circuit emulation

  • T1, E1

• ISDN switched access

• SNA services

  • SDLC and bisync, DS-0, DS-0A

Physical connectivity is provided through individual HSSI, X.21, T1, or E1 ports, or through channelized T3 interfaces.

Scalability  

The AXIS multiservice concentrator aggregates traffic from as many as 80 T1 or E1 ports onto a single port of a multiport broadband trunk card. This high port density maximizes use of the BPX Service Node high-capacity switch fabric. Each nine inch rack-mount shelf supports up to 80 DS-1 or E1 ports or more than 2000 64-kbps users. The AXIS multiservice concentrator has a compact footprint that minimizes the space required within central offices.

Common Equipment

Common equipment modules represent the shared resources that perform administrative, network management, and communication tasks. They also provide 1:n redundancy of service modules and transmission of aggregated traffic to and from the ATM node. The common equipment modules can be configured for 1:1 redundancy.

ATM Shelf Controller (ASC) 

The ASC performs all shelf-management functions, including intercard communications. The following external interfaces are provided for control access to the ASC:

• AUI 802.3 interface

• RS-232 control port

• RS-232 maintenance port

The ASC provides the following functionality:

• Configures and controls individual card on the AXIS shelf

• Communicates with the network manager to receive control information and report statistics

• Performs shelf-management functions

• Provides common equipment module redundancy functions and initiates common equipment card switchover upon failure

• Controls the broadband network module (BNM)

• Controls the service resource module (SRM)

• Provides an AUI (attachment unit interface) for LAN connectivity

• Provides an RS-232 control port for SLIP access for routine maintenance and additional control

• Provides RS-232 maintenance port for direct serial access for troubleshooting

Service Resource Module (SRM) 

The SRM is an optional common equipment module that provides the following functions:

• 1:n redundancy of the service modules. One standby card can spare up to nine active cards.

• BERT (bit error rate tester) generation and test capability for individual DS-1 or subrate ports (n x DS-0)

• Extended loopback code-generation capabilities for individual DS-1 or subrate streams

The main function of the SRM is to provide 1:n redundancy for all service modules. The SRM activates the single standby service module if one of the operating service modules fails. In addition, the SRM is backed up by a redundant SRM.

SRM-T1/E1 and SRM-3T3 Service Module

The SRM-3T3 service redundancy module provides bulk distribution of T1 circuits to the 4-port or 8-port T1 service modules. Rather than individually cable each of the 40 or 80 incoming T1/E1 lines to an AXIS multiservice concentrator, the AXIS multiservice concentrator backplane is designed with a distribution bus that allows an SRM-3T3 to distribute T1s received "in bulk" to T1-based service modules. This eliminates the need for T1 back cards for each service module and the associated cabling and potential overloading of the digital cross-connect system port.

The SRM-3T3 provides a method to bring in from one to three T3 interfaces that can be demultiplexed to their constituent T1s, providing up to 28, 56, or 80 T1s to be distributed to T1 service modules over the distribution bus. Both 4-port and 8-port service modules are supported in any combination.

The SRM-3T3 supports the following features:

• 1:1 redundancy of the SRM with Y-cabling

• The same features as the SRM-T1/E1, including BERT and 1:n redundancy of T1/E1 service modules

• Spare service module that can be used to provide redundancy for both bulk-distributed and line-module-based service modules concurrently (a redundancy back card will be required for a spare service module providing redundancy for line module-based service modules)

• No back card required for T1 service modules that use bulk distribution

• Mix of service modules using bulk distribution with service modules using line modules in the same shelf

• Mix of 4-port and 8-port cards, with all 10 slots always available to service modules via either line modules or bulk

Trunking Options 

Broadband Network Module (BNM) 

The BNM provides the trunk interface to an ATM device. The AXIS multiservice concentrator supports network modules at T3, E3, and OC-3/STM-1 speeds. In addition to transferring cells to and from the ATM platform, the BNM module polls each of the service modules to control access to the backplane. Each AXIS multiservice concentrator must have at least one BNM and can be configured with an identical spare BNM.

The BNM performs the following functions:

• Controls cell flow between the trunk interface and other cards in the AXIS shelf

• Directs cells to and from an ATM switch from and to the appropriate service cards

• Controls common equipment card set redundancy switchover and shelf mastership resolution with standby BNM (if present)

• Manages clock selection and synchronization for the AXIS multiservice concentrator

• Class of Service queuing and queue service

• Provides CO-compatible alarm indication, controls, and relays

• Monitors AXIS multiservice concentrator power (voltage)

• Monitors AXIS multiservice concentrator cooling fans and shelf air temperature

BNM-155 Trunk Card 

The broadband network module, BNM-155, increases the bandwidth of the AXIS multiservice concentrator feeder trunk to 155 Mbps, matching the bandwidth provided by the AXIS multiservice concentrator backplane. It is compliant with SONET/STM-1 standards, and ATM UNI and NNI formats are supported for flexible connectivity options to an ATM switch.

The BNM-155 also increases the connectivity options for the AXIS multiservice concentrator as an ATM access feeder to allow the AXIS multiservice concentrator to interface to a BPX via a BXM, to an IGX, or to other ATM switches.

The BNM-155 supports the following features:

• OC-3/STM-1 155.52-Mbps (353,208 cell) interface

• BNM-155 front card, independent of interface type

• Supports 1:1 redundancy using Y-cabling

• Clocking source options include the OC-3/STM1 trunk, an external T1 or E1 external clock input (DB15 and BNC connectors), and an internal oscillator

• Supports ATM UNI and NNI cell formats

• Supports 256 virtual-path connections (VPCs) per slot

• Supports 4096 VCCs per slot

Inverse Multiplexing for ATM Trunk Module (IMATM)  

IMATM allows Internet service providers, carriers, and enterprise customers to aggregate multiple T1 or E1 ATM communications links, thus providing the benefits of ATM networking at speeds between T1/E1 and T3/E3 without the costs of broadband links.

The IMATM has the following features:

• Multimedia support for ATM service

Cisco's multiband ATM program supports ATM wide-area links at speeds between T1/E1 and T3/E3. As part of the commitment to ATM networking, Cisco introduces the IMATM for service nodes to provide immediate access to Cisco's midband ATM technology. The IMATM uses inverse multiplexing for ATM (IMA) technology to aggregate multiple T1 or E1 lines to form a single high-speed ATM link.

The IMATM and its associated back card install in an AXIS multiservice concentrator. The AXIS multiservice concentrator works with the BPX Service Nodes (IGX support is forthcoming). They adapt multiple types of service traffic to ATM and aggregate the traffic before feeding it into the switching core of the service node.

IMATM cards are available in a T3-to-multiple-T1 version and an E3-to-multiple-E1 version, providing trunking between BPXs at up to 8 x T1 or 8 x E1 speeds.

The IMATM is based on ATM cells and can support all ATM service classes and traffic types with full OptiClass support. OptiClass software provides up to 16 programmable classes of service with standards-based quality of service (QoS) descriptors. It offers flexibility in provisioning and customizing services and in maintaining network efficiency.

Full resiliency is provided by supporting both one-for-one card redundancy and automatic adjustment of the IMA bandwidth to the number of available circuits.

• Cost-effective flexible bandwidth--from T1 or E1 to 8 x T1 or 8 x E1

IMATM cards provide a smooth migration from narrowband to broadband ATM. You can configure a BPX trunk initially to use a single T1 or E1 line. The bandwidth can then be increased by one or more lines at a time until the breakeven point for broadband tariffs is reached at about eight lines.

With IMATM cards in the AXIS multiservice concentrator, BPX Service Nodes can implement trunk bandwidths between T1/E1 and T3/E3 speeds. Interfaces on the BPX broadband shelf provide high-speed ATM connectivity for network segments with heavier traffic demands.

• Robust design--protects the system from circuit and card failures

Cisco designed IMATM for fault tolerance as well as high performance. One of the inherent advantages of IMA over other inverse multiplexing techniques is its ability to route circuits over diverse paths using different clocks with the same nominal frequency. For example, a trans-Atlantic IMA trunk could be split across two carriers--each providing its own clock--with continued operation even if one of the carriers' circuits fails.

IMA technology keeps traffic flowing even when an individual circuit fails. In a nonmultiplexed system, users of a given circuit might not be able to switch to a new path easily if their circuit goes out of service. In an IMA-based system, if one of the T1 or E1 links fails, all traffic on the trunk continues to flow over the remaining links. Even though the available bandwidth is reduced, users retain their network connectivity.

IMATM cards support 1:1 card redundancy through Y-cabling of the interfaces. The T1 or E1 cabling is repeated for each T1/E1 in the IMA trunk.

• High speed--efficient multiplexed design that takes full advantage of all available bandwidth

Cisco's midband ATM technology enables connections to take full advantage of all available bandwidth. For example, a network segment with four T1 lines multiplexed together through IMATM cards can use all four lines to handle high traffic levels on a given connection.

By comparison, when multiple independent (nonmultiplexed) T1 or E1 links are used between two switches, each connection is limited to a maximum speed of T1 or E1. If a given line experiences a burst of traffic that exceeds its available bandwidth, its throughput suffers. There is no way for it to route the excess traffic to another line.

Configuration Examples 

BPX Service Node 

When configured as part of a Cisco BPX Service Node, the AXIS multiservice concentrator allows modular scaling of the capacity of the service node without requiring additional switches. All AXIS multiservice concentrator shelves in a service node are logically managed as an integrated part of the service node.

Remote Locations 

For remote locations with limited switching requirements, the AXIS multiservice concentrator can be physically remoted from the BPX via IMA or broadband trunks.

Standalone AXIS Multiservice Concentrator 

The AXIS multiservice concentrator is not limited to attachment to the BPX switch. In standalone operation, the AXIS trunk can attach to any ATM switch to provide service aggregation.

Service Modules

The AXIS multiservice concentrator uses service modules and core cards to provide multiservice functionality.

T1/E1 ATM UNI/NNI Service Modules

The ATM UNI service module (AUSM-4 and AUSM-8) provides AXIS multiservice concentrator support for ATM UNI services. This service module offers the following features:

• 4- or 8-T1 or E1 unchannelized ports

• ATM UNI and ATM NNI format

• 1000 virtual connections per 8-port card; 256 virtual connections per 4-port card

• Single-bit HEC error correction

• Per-virtual-circuit queues on input, at least 16 class of service queues per port for user data on output

• IMA UNI/NNI that allow each T1/E1 to be either configured as a normal T1/E1 UNI/NNI or assigned to an IMA group. IMA support is provided only on the 8-port AUSM.

• Automatic adjustment of IMA after failure of any number of T1/E1 circuits to continue operation over the remaining circuits

• AutoCard restore and 1:n redundancy

• Provides BERT (bit rate error test) and extended loopback pattern generation/verification (when a service redundancy module [SRM] is also installed in the AXIS multiservice concentrator)

Circuit Emulation Service Module (CESM) 

The CESM supports access for T1/E1-based circuit emulation service (CES) data, voice, and video. The CESM receives the T1 or E1 bit stream, buffers and converts it into ATM cells using AAL1 adaptation, and sends the cells to the broadband network module for transmission via the trunk interface to the ATM device.

The new generation CESM-8 supports both channelized (nX64 Kbps) and unchannelized (T1/E1) circuit-based equipment. In ATM Forum terminology, the terms structured data transfer (SDT) and unstructured data transfer (UDT) are used for channelized and unchannelized CE respectively.

Key features of the CESM-8 include:

• ATM Forum standards based AAL1 CE - v2.0

• Choice of structured or unstructured data transfer per physical interface

• Time slots need to be contiguous for nX64 Kbps fractional T1/E1 service

• SF, ESF framing modes supported

• Synchronous clocking supported for both UDT and SDT

• Asynchronous clocking supported for UDT, with the following clock recovery methods:

  • SRTS

  • Adaptive

• ON/OFF Hook detection and silence suppression using CAS

Module Configurations

The following CESM configurations are available:

CESM-4T1	Four T1 ports; UDT only
CESM-4E1	Four E1 ports; UDT only
CESM-8T1	Eight T1 ports; UDT or SDT
CESM-8E1	Eight E1 ports; UDT or SDT

Frame Relay Service Module (FRSM) 

The FRSM multiplexes and demultiplexes frame traffic, including Frame Relay, FUNI, and other HDLC-derived data (frame forwarding). The FRSM performs adaptation, segmentation, and reassembly (SAR), and internetworking functions to convert traffic to and from ATM cells.

The FRSM includes the following features:

• FR-UNI, FR-NNI, and ATM FUNI interfaces and policing

• Frame Relay-to-ATM service and network internetworking

• ForeSight closed-loop rate control and per-VC queuing

• Wire-speed performance on all ports

• SVC and multicast support within Cisco service nodes

• Standard and enhanced LMI management interfaces (Annex A and Annex D)

FRSM-8 Service Module  

The port density of the T1/E1 Frame Relay service modules (FRSM-8) has increased from four to eight, with the same features available to both types of service modules. The FRSM-8 provides a platform that supports up to 80 Frame Relay T1s or E1s on a single AXIS multiservice concentrator shelf with full 1:n redundancy support and full channelized T1/E1 support, at an aggressive price per port for real traffic mixes.

The FRSM-8T1/E1 includes the following features:

• Support for 8-port T1 or E1 FRSMs (fractional and channelized versions) via individual T1/E1 connectors or via the SRM for bulk distribution (T1 only)

• Support for the same 8-port back cards as the AUSM-8T1/E1

• A channelized card, allowing each of 8 T1s or E1s to be channelized and support multiple ports per physical interface, up to the bandwidth limitations of the line

• A fractional card supporting a single customer port per physical interface
  (n x 64 Kbps)

• Up to 1000 connections per card

• Provides the same services as the FRSM-4T1/E1

• 1:n redundancy using an SRM

High-speed FRSM (FRSM-HS1) 

The high-speed Frame Relay service module (FRSM-HS1) supports higher-speed HSSI or X.21 interfaces.

The FRSM-HS1 supports the following features:

• Card throughput of 20 Mbps (bidirectional) at an average frame size of 130 octets

• HSSI line rates of up to 16 Mbps when a single port is configured per card. HSSI line rates of up to 8 Mpbs when both HSSI ports are configured

• X.21 line rates of 1 port x 10 Mpbs, 2 ports x 8 Mpbs, 3 ports x 4 Mpbs, or 4 ports x 4 Mpbs

• Up to 1000 virtual connections in DTE and DCE modes

• 1:1 redundancy using Y-cabling

• All standard AXIS multiservice concentrator FRSM features, including the same data link protocols as other FRSMs

• ForeSight integrated on the high-speed FRSM as a feature license

• FR-ATM network internetworking and service internetworking support

• Configuration of ATM Frame user network interface (FUNI) or ATM Frame NNI on a per-port basis

• Frame forwarding and FUNI support

Frame Relay Access Service Module (FRASM) 

The FRASM card implements a high-density serial FRAD that can be located at a central office. FRASM enables legacy SNA/SDLC access to Frame Relay or ATM networks for transmitting SNA and bisync 3270 traffic. FRASM is an integrated AXIS service module that eliminates customer premises-based FRADs and is used to migrate SNA traffic from leased lines to the more cost-effective solution of Frame Relay or ATM WAN without changing customer premises equipment.

Value-Added Services

Enhanced LMI (ELMI) 

The enhanced local management interface (ELMI) allows Frame Relay customer premises equipment (CPE) to exchange configuration information with the edge node of the network. Such configuration information includes LMI (Local Management Interface) protocols being provisioned or supported and the QoS parameters provisioned for every PVC. It also enables the network side to notify the CPE of any QoS changes. This enhancement simplifies the CPE configuration and guarantees configuration consistency between the CPE and the network.

LMI enhancements can be configured on a per-logical port basis to allow you to enable or disable ELMI per individual port. All service modules supporting FR LMI (Q.933 Annex A, ANSI T1.617 Annex D, or Cisco LMI), which includes FRSM 4T1/E1, FRSM 8T1/E1, and FRSM-HSI, support this enhancement.

Extended ForeSight  

Extended ForeSight uses standards-based consolidated link-layer management (CCLM) messages to pass ForeSight congestion indications across Frame Relay UNI and NNI service interfaces. Extended ForeSight provides a powerful means for extending the range of ForeSight flow control beyond the network boundaries of a single carrier.

Central Office Frame Relay Access Device (CO FRAD)  

CO FRAD supports SNA connectivity and allows service providers to offer legacy SNA access to Frame Relay or ATM networks for transporting SNA SDLC, or bisync traffic. It provides a high-density Frame Relay access-device capability that can be located at a central office. CO FRAD is provided in the AXIS multiservice concentrator, through the Frame Relay access service module (FRASM), and eliminates the need for a customer premises-based FRAD.

CO FRAD includes the following features:

• The FRASM supports high-density Frame Relay concentration for SDLC and bisync devices. It can be used by service providers to provide an integrated platform to migrate SNA traffic from leased lines to Frame Relay/ATM WAN. FRASM implements standard RFC 1490 encapsulation for SNA over Frame Relay transport.

• Up to 8 channelized T1 interfaces with DS-0 and DS-0A channel format

• Supports access rates of 2.4K, 4.8K, 9.6K, 56K, 64K, and n*64 kbps

• Supports SDLC and bisync

• Supports multiple PUs over a single DS-0 or DS-0A port (multiple PVCs per port)

• Up to 192 SDLC or bisync ports per card

• Up to 1000 PVCs per card

• Up to 16 multidrop connections per port

The following end-to-end configurations will be supported by FRASM:

• SDLC tunnel with local acknowledgment (SDLC at both ends of the network)

• Bisync tunnel with local acknowledgment (bisync at both ends of the network)

• SDLC to boundary network node (BNN) conversion (SDLC at one end and Frame Relay BNN at the other)

Table 11-13: AXIS Multiservice Concentrator Specifications

Description	Feature
16 slots	6 slots reserved for common control cards 10 slots available for function modules
Dimensions (H x W x D)	8.75 x 17.45 x 20 in. (21.8 x 43.6 x 50 cm) 19 in. (48.3 cm) rack mountable
Power requirement	-48 VDC or 110/220 VAC 400W Redundant power feeds
Capacity	640-Mbps ATM cell bus
Subscriber interfaces	T1/E1 Frame Relay (fractional and channelized) High-speed Frame Relay ATM Frame user network interface n x T1/E1 IMA UNI T1/E1 ATM T1/E1 Circuit emulation SNA/SDLC Bisync
Trunk interfaces	T3/E3 SONET STS-OC-3/STM-1 IMA (T1/E1)
Optional Redundancy	1:1 optional common equipment redundancy, including control processor network interfaces, power supplies Optional 9:1 subscriber interface redundancy
Network management	SNMP configuration and monitoring Trivial File Transfer Protocol (TFTP) software download TFTP statistics collection
Connection management	PVCs or SVCs

Product Numbers

Table 11-14 lists the product numbers you can use to order the AXIS multiservice concentrator. If a product number ends with an equal sign (=), the item can be ordered only as a spare. If a product number does not end with an equal sign, the item can be ordered as a spare or as a configurable part of a system order.

Table 11-14: AXIS Multiservice Concentrator Product Numbers

Description	Product Number
AXIS Multiservice Concentrator
AXIS multiservice concentrator, 16-slot, rack mount, ASC, ASC-BC	AXIS=
AXIS Multiservice Concentrator Core Cards
AXIS multiservice concentrator controller	AX-ASC=
ASC back card	AX-ASC-BC=
Broadband network module (BNM)--1 T3 port	AX-BNM-T3=
Broadband network module (BNM)--1 E3 port	AX-BNM-E3=
Broadband network module (BNM)--155 Mbps port	AX-BNM-155=
T3/E3 BNM back card with DB15 clock connector	AX-T3E3-D-BC=
T3/E3 BNM back card with BNC clock connector	AX-T3E3-B-BC=
OC-3/STM-1 BNM back card	AX-SMF-155=
Service resource module T1/E1	AX-SRM-T1E1=
Service resource module with 3 channelized T3 ports	AX-SRM-3T3=
Service resource module back card	AX-BNC-3T3-M=
AXIS Multiservice Concentrator Service Modules
Frame service module, 4 fractional T1 ports	AX-FRSM-4T1=
Frame service module, 4 channelized T1 ports	AX-FRSM-4T1-C=
Frame service module, 8 fractional T1 ports	AX-FRSM-8T1=
Frame service module, 8 channelized T1 ports	AX-FRSM-8T1-C=
Frame service module, high-speed serial ports	AX-FRSM-HS1=
Frame service module, 4 fractional E1 ports	AX-FRSM-4E1=
Frame service module, 4 channelized E1 ports	AX-FRSM-4E1-C=
Frame service module, 8 fractional E1 ports	FRSM-8E1=
Frame service module, 8 channelized E1 ports	FRSM-8E1-C=
Circuit emulation service module, 4 T1 ports	AX-CESM-4T1=
Circuit emulation service module, 4 E1 ports	AX-CESM-4E1=
Circuit emulation service module, 8 T1 ports	AX-CESM-8T1=
Circuit emulation service module, 8 E1 ports	AX-CESM-8E1=
ATM UNI service module, 4 T1 ports	AX-AUSM-4T1=
ATM UNI service module, 4 E1 ports	AX-AUSM-4E1=
ATM UNI service module, 8 T1 ports	AX-AUSM-8 T1=
ATM UNI service module, 8 E1 ports	AX-AUSM-8 E1=
CO FRAD service module, SNA services, 8 T1 ports	AX-FRASM-8T1=
IMA trunking module, 8 T1s	AX-IMATM-8T1/B=
IMA trunking module, 8 E1s	AX-IMATM-8E1/B=
Service Module Back cards
4-port T1 back card for service module, DB15 connectors	AX-DB15-4T1-BC=
4-port E1 back card for service module, DB15 connectors	AX-DB15-4E1-BC=
4-port E1 back card for service module, BNC connectors	AX-BNC-4E1-BC=
8-port T1, 1-port T3 back card for IMA trunking module	AX-RJ48-T3/T1=
8-port E1, 1-port E3 back card for IMA trunking module	AX-RJ48-E3/E1=
8-port E1, 1-port E3 back card for IMA trunking module	AX-SMB-E3/E1=
8-port T1, back card for service modules, RJ-48 connectors	AX-RJ48-8T1=
8-port E1, back card for service modules, RJ-48 connectors	AX-RJ48-8E1=
8-port E1, back card for service modules, SMB connectors	AX-SMB-8E1=
Redundancy back card for AX-RJ48-8T1	AX-R-RJ48-8T1=
Redundancy back card for AX-RJ48-8E1	AX-R-RJ48-8E1=
Redundancy back card for AX-SMB-8E1	AX-R-SMB-8E1=
Redundancy back card for DB15-4E1-BC-based service module	AX-R-DB15-4E1=
Redundancy back card for BNC-4E1-BC-based service module	AX-R-BNC-4E1=
Redundancy back card for DB15-4T1-BC-based service module	AX-R-DB15-4T1=
Redundancy back card for DB15-4E1-BC-based service module	AX-R-DB15-4E1=
Redundancy back card for BNC-4E1-BC-based service module	AX-R-BNC-4E1=
AXIS Multiservice Concentrator Spares and Accessories
AXIS DC power entry module	AX-DC
AC power option 1--1 875W, 1 AC input	AX-AC1-1
AC power option 2--2 875W, 1 AC input	AX-AC2-1
AC power option 3--2 875W, 2 AC input	AX-AC2-2
875W AC power supply	AX-PS-AC
AXIS controller card	AX-ASC=
AXIS controller back card	AX-ASC-BC=
AC power supply rack enclosure, 1 AC line input	AX-AC-RACK1=
AC power supply rack enclosure, 2 AC line inputs	AX-AC-RACK2=
Short cable, AC shelf to AXIS	AX-CAB-AC-SHRT
Long cable, AC shelf to AXIS	AX-CAB-AC-LONG
AXIS Multiservice Concentrator Cooling Options
AXIS multiservice concentrator two-shelf cooling	AX-COOL2
AXIS multiservice concentrator, additional two-shelf cooling	AX-BOOST2
AXIS Multiservice Concentrator Firmware
Firmware media kit for use with AXIS multiservice concentrator	AX-FW-2113, 2114, 2116, 2118, 2120, 3000
AXIS Multiservice Concentrator Software/Feature Licenses
AXIS ForeSight license for each FRSM-4	AX-FS-4
AXIS ForeSight license for each FRSM-8	AX-FS-8
AXIS service redundancy license for each SRM card	AX-SR-8
AXIS SDT license for each CESM-8	AX-SDT-8