NMS Communication - CG 6000 Series

Platform for the New Era of Communications

As IP telephony gains increasing market acceptance, the requirement emerges for a new class of platform that can combine voice over IP (VoIP) connectivity with traditional PSTN connectivity and voice processing functionality. The NMS Communications' Convergence Generation™ (CG) 6000 Series is a scalable, high-performance development platform for converged PSTN and IP telephony solutions, designed to meet the connectivity, flexibility, and performance requirements of new applications such as VoIP gateways and IP media servers. The CG 6000 Series has been developed from the ground up to address packet-intensive convergence applications. Unlike competitive IP telephony products, the CG 6000 Series is purpose-built to be a low-latency, IP media-streaming platform. And since it is supported by the rich and flexible NMS Natural Access™ software development environment, solutions based on the CG 6000 Series are easily developed and rapidly brought to market. The CG 6000C is the first choice for cost-effective CompactPCI solutions, while the CG 6000 is the ideal platform for highest-density requirements in PCI form-factor.


  • Up to 120 universal IVR/VoIP/fax ports
  • Low-latency media streaming
  • On-board RTP/RTCP
  • Dual 10/100Base-T interface
  • Both single-slot 6U CompactPCI and PCI solutions
  • T1/E1 digital trunk PSTN interfaces
  • Natural Access software environment
  • H.100/H.110 (CT Bus) interface


  • IP media servers
  • VoIP gateways
  • Enhanced service platforms
  • Wireless/IP gateways

Technical Description:

The architecture of the CG 6000 Series integrates PSTN interfaces, telephony protocols, comprehensive IVR functionality, full-duplex echo cancellation, speech encoding, fax processing, a Fast Ethernet interface, and packet protocols into a single-slot package. This integration results in a cost-effective and scalable platform for OEMs building next-generation convergence solutions.

The CG 6000C is a carrier-grade platform targeted at in-the-network deployments where scalability and reliability are absolute requirements. NMS' leadership position in the CompactPCI industry is visible in the platform with first-to-market hot swap driver support, rear-panel I/O connections, and low power consumption.

The CG 6000 is a scalable, mid- to high-density platform targeted at enterprise deployments where low-cost, PC-based solutions are required.

Media Streaming Architecture

The CG 6000 Series features a powerful media streaming facility. This capability is presented as a standard Natural Access service that provides functions for creating media channels that transfer data between endpoints. Supported endpoints include T1/E1, RTP/IP, UDP/IP-T.38 fax, and host-based functions such as play/record. The media streaming service can be used in combination with other Natural Access services, such as Natural Call Control,™ to provide an interface for PSTN call control and IVR.

The CG 6000 Series' media streaming architecture is based on a downloadable filter graph model, shedding the assumption that every customer solution will be a hard-wired VoIP gateway. The flexibility provided by this media streaming capability, and the programmability of the architecture via Natural Access APIs, enables the creation of unique and differentiated solutions based on CG 6000 platforms.

Endpoints, Channels, and Connections

When using the media streaming service, the application creates a connection to describe the flow of data through the CG 6000 Series platform. Applications establish connections by creating media streaming endpoints and channels, and then connecting sets of endpoints with channels. The service provides programmers with a standard set of endpoint and channel types with which to build connections.

Natural Access Support

The CG 6000 Series is supported by NMS' Natural Access development and runtime environment. Natural Access provides a consistent set of APIs that are operating system independent, thereby delivering true application portability. With Natural Access' Natural Call Control Service, programmers can easily and quickly develop applications that run on multiple types of telecommun-ications interfaces by using a single protocol-independent API. Natural Call Control minimizes the processing overhead on the host CPU by executing protocols on the board's control processor. Natural Access unifies application development across NMS Alliance Generation® and Convergence Generation products.

Dual Redundant Ethernet

The CG 6000 Series features dual 10/100 Base-T Ethernet interfaces. These can be used either as two independent subnets or in an automatic failover mode that switches traffic to the alternate interface without interruption of in-progress calls. This feature protects against wire cut or hub failure.

Technical Specification:


  • Processor: 233 MHz SA110 StrongArm with 32 MB SDRAM
  • PCI bus: 33 MHz, 32-bit master or slave
  • PCI universal expansion board: Compatible with both 5.0 V and 3.3 V signaling environments
  • Input/output: Via CompactPCI rear-panel transition card; via backplate on PCI

Software Environment

  • Development environment:
  • Hot Swap: Per PICMG 2.1 (CG 6000C only)
  • Operating Systems:
    • Windows® NT 4 with Service Pack 5
    • Windows 2000
    • Intel® Solaris V8
    • SPARC® Solaris™ V8 (32 bit and 64 bit)
    • Red Hat® Linux® V6.2


Part Number Name Form Factor T1/E1 Trunks Typical Applications
80956 Fusion CG 6000-2L/4TE PCI 4 120-port VoIP gateway

Fusion CG 6000C-2L/4TE cPCI 4 120-port VoIP gateway
80954 Fusion CG 6000-2L PCI 0 120-port IP media server
82014 Fusion CG 6000/1600-2L/4TE PCI 4 60-port VoIP gateway
82015 Fusion CG 6000/800-2L/2TE PCI 2 30-port VoIP gateway
82061 Fusion CG 6000C/800-2L/2TE cPCI 2 30-port VoIP gateway
80915 CG 6000-2L/4TE PCI 4 120-port PSTN IVR + Fax server
82016 CG 6000/1600-2L/4TE PCI 4 120-port PSTN IVR server
82017 CG 6000/800-2L/2TE PCI 2 60-port PSTN IVR server
82018 CG 6000/400-2L/2TE PCI 2 30-port PSTN IVR server

Media Stream DSP Processing

  • Universal port capability:
    • Comprehensive IVR support
    • Echo cancellation
    • Vocoding: G.711, G.723.1, G.729a/b, G.726
    • Fax: T.38 real-time; T.37 store-and- forward
  • Processors: TI TMS320C5420 each with dual 100 MHz core plus 200 kB SRAM
  • Capacity: from 24 to 120 universal ports

IP Network Connectivity

  • Physical: Dual 10/100Base-T Ethernet interface via RJ-45 connectors
  • Protocols: RTP/RTCP, MGCP, H.323, DHCP, SNMP

PSTN Network Connectivity

  • Physical: T1/E1 interfaces via RJ-48 connectors (CG 6000-2L/4TE has 2 trunks per connector)
  • Capacity: Up to 120 ports
  • Configuration: Software switchable between T1/E1


  • Channel Associated Signaling (CAS): MFC-R2 (many country-specific variants), DID, R1.5, Winkstart MF/DTMF, loopstart T1, ground start T1, operator workstation T1, pulsed E&M, Feature Group D, SS5, off-premise station SA and FX, MF Socotel, Australian P2, three European country--specific variants of CAS
  • Common Channel Signaling: 11 variants of ISDN Primary Rate Interface (PRI)

DSX-1 Telephony Interface

  • Interface: Complete interface for up to four T1 trunks (ANSI T1.102, T1.403)
  • Framing: D4, ESF
  • Insertion/generation and extraction/ detection: ABCD bits
  • Line code: AMI, B8ZS
  • Zero bit: Suppression selectable B8ZS, jammed bit (ZCS) or no zero code suppression
  • Alarm signal capabilities: Yellow, Red, and Blue
  • Counts: Bipolar violation, F(t) error, and CRC error
  • Robbed bit: Selectable on a per-trunk basis
  • Loopback: Per-channel and overall under software control. Automatic remote loopback with CSU option
  • Connector: RJ-48C
  • Mix of ISDN and CAS trunks on single board

CEPT E1 G/703 Telephony Interface

  • Interface: G.703 2048 kbps trunk interface
  • Framing: CEPT G.703/G.704 Channel Associated Signaling
  • Insertion/generation and extraction/ detection: ABCD bits for Channel Associated Signaling and HDLD/LAPD for generating/terminating data link
  • Line code: HDB3 or AMI (no zero code suppression)
  • Zero bits: Selectable B8ZS, jammed bit (ZCS) or no zero code suppression
  • Alarm signal capabilities: Yellow, Red, and Blue
  • Counts: Bit error rate, CRC errors, slips, line code violations, far-end block errors
  • Loopback: Per-channel and across channels under software control
  • Connector: 75 ohm RJ-48C with BNC adapter cables or 120 ohm RJ-48
  • Mix of ISDN and CAS trunks on single board

Audio Signal Processing

  • Sampling rates: 8 ksamples/sec (telephone industry standard)
  • Speech compression (IVR):
    • 11 kHz, 8- or 16-bit linear (.WAV); 16-bit may reduce the number of ports per board
    • 8 kHz 16-bit linear (.WAV)
    • 64 kbps µ-law or A-law per ITU-T G.711
    • 16, 24, and 32 kbps ADPCM using NMS algorithm with NMS framing and bit packing with up to 2x speedup on play back
    • OKI-compatible ADPCM 24 kbps @ 6 kHz or 32 kbps @ 8 kHz with up to 2x speedup on playback
    • IMA-compatible ADPCM 32 kbps
    • G.726-compatible ADPCM 32 kbps

Tone Dialing

  • DTMF digits: 0 to 9, *, #, and ABCD per ITU Q.23 and Q.24
  • Rate: Programmable (10 digits/sec nominal)
  • Wait-for-dial tone capability
  • Dialing parameters: Software configurable (see Note*)
  • Dialing amplitude: Software configurable; range -33 dBm to +1 dBm (see Note*)

Pulse Dialing

  • 10 digits: 0 to 9
  • Pulsing rate: 10 pulse/sec (nominal)
  • Make/break ratio: Software configurable 40/60 nominal (see Note*)

*Note: NMS supplies configuration files that conform to national regulations for countries where certification has been received.

DTMF Tone Detection

  • DTMF digits: 0 to 9, *, #, ABCD
  • Dynamic Range: -47 dBm to 0 dBm per tone, programmable
  • Tone duration: 40 ms (minimum)
  • Acceptable twist: 10 dB
  • Talk-off: Exceeds Bellcore TR-TSY-000763 tests

Analog Display Services Interface (ADSI)

  • Capable of sending and receiving Frequency Shift Key (FSK) data for ADSI
  • Transmit FSK function implements modem portion of Bellcore advisory TA-NWT 000030
  • 1,200 Baud FSK support
  • Caller ID support
  • Easy to use API support in Natural Access

Power Requirements

CG 6000C
1.4 A
3 A
CG 6000
1 A
3 A

H.110/H.100 Bus

  • 256 full-duplex connections to bus
  • 1,024 local connections
  • Switchable access to any of 4,096 bi-directional timeslots
  • H.100/H.110 clock master or clock slave (software selectable)
  • H.100/H.110 termination capability (switch-enabled)
  • Individual data lines may be programmed in groups of 2, 4, or 8 Mbps for direct connection to boards with previous compatible technology
  • Uses Lucent Microelectronics Ambassador™ T8105

Standards and Compliance

  • Digital multiplexer requirements and objectives: AT&T Pub. 43802, July 82
  • Service description and interface specifications: AT&T TR 62411, ACCUNET T1.5
  • Carrier to customer installation DS1 metallic interface: ANSI T1E1/88-001R1, Feb. 88
  • ANSI T1 standard for ISDN Primary Rate Interface: T1E1.4/8868 (proposed text) April 88
  • Primary Rate User-network Interface Layer 1 specification: ITU-T I.431, June 88
  • ISDN Primary Rate Interface specification: AT&T Pub. TR41449 and TR41459, June 85
  • PCI SIG: PCI Specification Revision 2.1
  • CT Bus: ECTF H.110 Revision 1.0
  • CompactPCI: PICMG 2.0, Rev. 2.1
  • Hot Swap: PICMG 2.1, Rev. 1.0


  • Operating temperature: 0 °C to +50 °C
  • Storage temperature: -20 °C to +70 °C
  • Humidity: 5% to 80%, non-condensing