NMS Communication - CG 6100C Series

CompactPCI High-Desity Trunk Interface

The NMS Convergence Generation™ (CG) 6100C Series provides high-density digital trunk interfaces combined with digital signal processing (DSP) resources for signaling and echo cancellation on a CompactPCI (cPCI) board set (main board and rear transition board). The CG 6100C offers rear panel access for either 8 or 16 spans of E1 or T1. Some configurations include a daughterboard with DSP resources for more ports of IVR and fax. The CG 6100C is fully H.110 (CT Bus) compliant to support switching of voice paths with trunk boards or any H.110 timeslot. The high-density of trunks saves valuable cPCI slots in the large, high-availability environments of service providers and carrier-class system applications such as media servers, switches, wireless infrastructure, and enhanced services platforms.

NMS provides developers with the widest range of PCI and cPCI options — all under Natural Access™, a unified program development environment which provides a common API set to all Alliance Generation® and Convergence Generation digital and analog board


  • Provides channelized T1/E1 interfaces for up to 480 DS0 streams
  • Included rear transition board supports one or two standard RJ-48T interface connectors
  • Designed for use with Alliance Generation and Convergence Generation DSP resource boards to provide cost-effective IVR, fax and VoIP solutions
  • Implements full H.110 (CT Bus) specification with 4,096 timeslots to build high-capacity systems
  • Uses MVIP-95 switching model
  • Feature-rich Natural Access software development kits support Windows® , Intel® and SPARC® Solaris™ , and Linux®
  • On-board call control eliminates host processor load, allowing systems to scale to large size
  • On-board call control features eliminate the need for an extra resource board for CAS call control
  • Supports A-law or µ-law PCM encoding, simplifying development for applications running both T1 or E1
  • Provides dual 10/100Base-T Ethernet interfaces
  • Software configuration of trunks as T1 or E1 (120 ohm)
  • Supports ISDN PRI, CAS, MFC-R2, and wink protocols
  • Offers echo cancellation (20 ms tails) on all supported IVR ports
  • StrongARM processor runs LAPB, LAPD, Q.921 and Q.931 ISDN, and QSIG call control
  • Heartbeat function allows host tracking of board operation
  • Supports full PICMG hot-swap standard


The CG 6100C is available in the following 8 and 16 trunk configurations:

  • CG 6100C/4-8TE, for switching and 30 ports of IVR
  • CG 6100C/10-8TE, for CAS or ISDN
  • CG 6100C/20-8TE, for CAS or ISDN with 64 ports of IVR
  • CG 6100C/4-16TE, for switching
  • CG 6100C/10-16TE, for switching and 60 ports of IVR
  • CG 6100C/20-16TE, for CAS or ISDN
  • CG 6100C/20D16-16TE, for CAS or ISDN with 120 ports of IVR

The CG 6100C hardware supports the capability for software configuration as either E1 or T1 trunks.

Technical Description:

Natural Access Program Development
The CG 6100C Series is supported using NMS' Natural Access software development and runtime environment. Natural Access provides a consistent set of APIs that are operating system-independent, delivering application portability. With Natural Access Call Control,™ programmers can easily and quickly develop applications that run on multiple types of telecommunications 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 processor. Natural Access unifies application development across NMS' Alliance Generation and Convergence Generation products.

The CG 6100C handles the call control on-board and interrupts the host CPU when an event requires application action, minimizing host loading. However, with a density of 480 DS0s per slot, call activity can reach high levels when a number of CG 6100Cs are installed. Careful attention to loading on the host CPU is required during application design.

H.110 Support Assures Open Architecture, Vendor Independence
The CG 6100C Series provides full support of the ECTF H.110 specification. The H.110 bus provides 4,096 timeslots operating at 8 MHz. The H.110 bus also allows programmable operating speeds at 2, 4, or 8 MHz for direct connection to existing boards at their native operating speeds.

The CG 6100C Series uses the Lucent Microelectronics Ambassador™ chip family that offers full support for the H.100 bus within the MVIP hierarchical architecture. It also provides an additional 1,024 timeslots of local on-board switching, improving overall application efficiency and system scalability.

Dual Redundant Ethernet
The CG 6100C features dual redundant 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 cut wires or hub failure.

In addition to diagnostics run at boot-up time, the CG 6100C performs run-time diagnostics for the following events:

  • Rear Transition Board Missing: If the CG 6100C senses that the rear transition board is not properly inserted, thus interrupting the trunk paths, it will alarm the application.
  • Temperature Measurements: The application can request current temperature from sensors placed on the board.

Technical Specification:


  • Processor: 233 MHz SA110 StrongArm with 32 MB SDRAM
  • DSP: TI TMS320C5420 with a dual 100 MIPS core plus 200 kB SRAM
  • Expansion: Daughterboard connector with local PCI bus and local TDM bus
  • Ethernet: Dual 10/100Base-T connectors
  • LED Indicators: Hot Swap (blue); one per T1/E1 indicating operational status (green); two green for each Ethernet

Host Interface

  • Electrical: PCI Local Bus specification Revision 2.1
  • Mechanical: PICMG 2.0, R2.1 CompactPCI
  • Bus speed: DC to 33 MHz
  • Bus type: 32-bit master or slave
  • I/O mapped memory: Memory-mapped interface for efficient block data transfers
  • Address/interrupts: Address and interrupts automatically configured by PCI BIOS (no jumpers or switches)

Software Environment

  • Development environment: Natural Access 4.x
  • Host Operating Systems: Windows NT 4 with Service Pack 5, Windows 2000, Intel Solaris V7, SPARC Solaris V7 and V8 (64-bit), and Red Hat® Linux V6.2
  • Hot Swap: Per PICMG 2.1
  • Management:
    • OAM 1.x
    • Standard Trunk MIBs and CG 6100 MIB

H.110 Support

  • Flexible connectivity between analog station ports and H.110 bus
  • 512 full-duplex connections to bus
  • 1,024 local connections
  • Switchable access to any of 4,096 timeslots
  • Individual data lines may be programmed in groups of 2, 4, or 8 Mbps for direct connection to boards with previous compatible technology
  • H.110 bus clock master or clock slave (software selectable)
  • H.110 bus termination (switch enabled)
  • Lucent Microelectronics Ambassador T8105 chips

DSP Processing

  • Universal port capability:
    • IVR play or NaturalFax for 30 to 120 ports

      Echo cancellation (20 ms tails) on all supported IVR ports (future 64 ms tails for reduced number of ports)

PSTN Network Connectivity

  • Protocols:
    • 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)
  • Interface connectors: One or two RJ-48T connectors on rear transition card panel
  • Interfaces to short-haul trunks

DSX-1 Telephony Interface

  • Interface: Complete interface for up to 16 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: Up to four RJ-48C connectors
  • Mix of ISDN and CAS trunks on single board

CEPT E1 G.703 Telephony Interface

  • Interface: 8 or 16 G.703 trunks (120 ohm)
  • 75-ohm trunks: Must use an external 120 ohm to 75 ohm converter such as NMS part number 33050
  • Framing: CEPT G.703/G.704 Channel Associated Signaling
  • Insertion/generation and extraction/ detection: ABCD bits for CAS; HDLC/LAPD for generating terminating data link
  • Line code: HDB3 or AMI (no zero code suppression)
  • Zero bit suppression: B8ZS, jammed bit (ZCS) or no zero code suppression
  • Alarm signals: Yellow, Red, and Blue
  • Counts: Bit error rates, CRC errors, slips, line code violations, far-end block errors
  • Loopback: DS0 and E1 level (software control)

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
  • 1200 Baud FSK support
  • Caller ID support
  • Easy to use API support in Natural Access

Switch Compatibility

  • EuroISDN
  • Lucent 5ESS
  • Nortel DMS-100, DMS-250


  • 2.3 A max. @ 5.0 V
  • 5 A max. @ 3.3 V


  • Operating temperature: 0 C to +50 C
  • Storage temperature: -20 C to +70 C
  • Humidity: 5% to 80%, non-condensing
  • Fire resistance: UL-94V0

CompactPCI Chassis Requirements

  • J3 connector isolation rating: For the 16 T1/E1 board, the J3 connector must have a 500 Vdc breakdown rating to all other paths

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
  • ECTF: H.110 Revision 1.0
  • CompactPCI: PICMG 2.0, Rev. 2.1
  • Hot Swap: PICMG 2.1, Rev. 1.0