Service	Functionality
NCC service	Call control.
ADI service	DTMF generation and detection, and voice playing and recording.
Switching service	Control of MVIP switch blocks on telephony boards.
Voice Message service	Playing, recording and editing voice messages in files.

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Chapter 1

The QX 2000 Series

1.1 QX 2000 Boards

1.2 Software Components

: 1.2.1 CT Access
: 1.2.2 QX Configuration File
: 1.2.3 Trunk Control DLLs
: 1.2.4 Quad Subscriber Line Audio Circuit Files
: 1.2.5 Field Programmable Gate Arrays Circuit Files
: 1.2.6 DSP Operating System File

1.3 Compatibility With Telephony Switching Standards

: 1.3.1 Interoperability with MVIP-90

1.1 QX 2000 Boards

The QX 2000 boards provide four analog telephone ports which can receive incoming calls, place outgoing calls, transfer calls to local phones, and switch calls to other telephony boards.
The QX 2000 resides in a single PCI bus slot and contains an enhanced compliant MVIP interface. Up to eight QX 2000 boards may reside in a single PC chassis.
There are two QX 2000 variants: QX 2000 Board Line Interfaces Processing Capabilities Telephony Bus QX 2000/100-4L 4 loop start interfaces 4 ports voice and call processing H.100 Bus QX 2000/80-4L 4 loop start interfaces 4 ports voice and call processing MVIP-90 Bus
The main components of the QX 2000 board are: DSP resources The QX 2000 board includes a high-performance digital signal processor (DSP) which provides resources for four ports of call and voice processing. The DSP processor supports tasks for voice recording and playback, DTMF detection and generation, and call progress analysis. DSP resource management is transparent to the application. The QX 2000 driver allocates appropriate processing resources as needed. PCI bus connectivity Each board is designed to reside in a single PCI bus slot. Telephone line connectivity Each board connects to four analog loop start telephone interfaces. Telephony bus connectivity The QX 2000/100-4L board provides full support of the H.100 bus specification. The QX 2000/80-4L has an enhanced compliant MVIP interface. Telephony bus switching The switching for the QX 2000/100-4L board is implemented with the HMIC (H.100/MVIP Integrated Circuit). The HMIC is a single chip that offers full support for the H.100 bus within the MVIP architecture providing access to all 4096 timeslots on the H.100 bus. On the QX 2000/100-4L board, switch connections are allowed for up to 1024 local timeslots and up to 128 full duplex connections to the H.100 bus. The switching for the QX 2000/80-4L board is implemented with an FMIC (Flexible MVIP Integrated Circuit). The FMIC is a single chip that provides access to all 512 timeslots on the MVIP-90 bus. Audio interface Two stereo jacks provide audio input and audio output. The audio interface is compatible with the line input/output interface of a Sound Blaster card. The audio interface can be used to record voice prompts or to monitor a line interface. Local phone interface The QX 2000 board has a jack for connecting a local telephone interface. The board provides the current to power the phone. The local phone interface can be used to monitor a line interface . Figure 1. QX 2000/100-4L Board Components Note: Currently, the E&M power supply connector and indicator on the QX 2000/100-4L end bracket are not used. Figure 2. QX 2000/80-4L Board Components

QX 2000 Board	Line Interfaces	Processing Capabilities	Telephony Bus
QX 2000/100-4L	4 loop start interfaces	4 ports voice and call processing	H.100 Bus
QX 2000/80-4L	4 loop start interfaces	4 ports voice and call processing	MVIP-90 Bus