MSI/SC Series  Modular Station Interface Boards For The Scbus

Features and Benefits

• Connect up to 24 analog telephone devices directly to computer telephony systems and create affordable, low-end to mid-size, PC-based telemarketing systems and call centers
• Expandable, modular design lets you deploy just the right number of ports today, and efficiently add more tomorrow, with configurations of 8, 16 and 24 station interfaces in a single ISA slot
• SCbus™ connectivity enables integrated applications customized to individual needs using a wide range of complementary technologies like speech recognition, facsimile and text-to-speech. Build economical systems by sharing resources via the SCbus.
• Create more cost-effective switching solutions via access to the SCSA™ SCbus with its 1024 time slot capability and the capacity to build higher density systems and large, multinode systems through SCxbus™ communications
• Optional power ringing with automatic ring trip requires no additional external circuitry
• Station status event detection allows collection of call traffic statistics via the application for cost-effective management of call setup and call termination
• Programmable channel gain provides channel volume control from the application and enables matching line levels from different devices
• Supports programmable notification tones for metering time expired
• Provides unobtrusive monitoring of connections
• Provides battery feed to power station sets
• Call conferencing supports up to 32 conferees in flexible configurations of 2 to 8 parties per conference
• Conferencing resources include advanced features such as broadcast, coaching, and dynamic additions and deletions without annoying training tones
• C language application program interfaces (APIs) for MS-DOS(r), UNIX(r), OS/2(r), and Windows NT(r) shorten your development cycle so you can get your applications to market faster
• Programmable cadence allows you to select and set ring cadence options (UNIX and Windows NT only)
• Splash ring to prevent glare - immediately applies a 500 msec burst of ring to station sets when the application issues a ring command (UNIX and Windows NT only)

• Inbound and outbound telemarketing
• Customer service, help desks
• Dictation/transcription
• Operator services such as billing automation, directory assistance, and intercept treatments
• Automatic call distribution (ACD)
• Teleconferencing/conferencing bridge
• Audiotex
• Local information services

* With optional SA/240 Station Adapter and 50-pin cable

 MSI/SC™ Series Modular Station Interface products incorporate a variety of analog devices, such as local 2500-type touchtone telephones, modems, and fax machines, into computer telephony systems that are based on the open, industry-standard SCbus™.

 With the MSI/SC Series, applications can be extended to incorporate live agent stations or third-party-add-on technology. Up to 24 analog station devices (such as local telephones, telesales agent headsets, modems, fax machines, or audio equipment) can be connected to the SCbus. A conferencing feature enables applications to establish conferences between any of the time slots on the SCbus and the station devices connected to the MSI/SC board.

 The MSI/SC Series consists of an MSI/80SC baseboard which contains a digital signal processor (DSP) and eight station interface circuits. Up to two SI/80 daughterboard modules — each with an additional eight station interface circuits — can be added to the baseboard for a total of 24 ports. Preconfigured 16-port MSI/160SC and 24-port MSI/240SC models can be ordered.

 The MSI/SC is an AT form factor board with a 16-bit bus that fits in a single AT (ISA) expansion slot (even with station daughterboards installed).

 Each MSI/SC station interface connects an application-selectable time slot on the SCbus to an analog station device. The RJ-21X telephone interface on the MSI/SC board enables easy connections to breakout boxes or punchdown blocks. For standard RJ-11 jack connections, Dialogic offers an optional SA/240 Station Adapter and a 50-pin cable.

 An external Dialogic MSI/SC Power Module provides loop current (battery) to local telephones through the MSI/SC. The system can handle multiple stations going on- or off-hook simultaneously.

 The MSI/SC-R models also provide a power ring option that generates the AC voltage needed to ring standard 2500-type telephones. This power ring capability is contained completely on-board within the slot. No additional external circuitry is required. Using a 33% duty cycle ring cadence, the MSI/SC-R can ring 24 phones simultaneously.

 Balanced lines ensure low noise and allow stations to be installed up to 3500 feet (1066 meters) from the host PC. Built-in electrostatic discharge (ESD) protection lets agents insert and remove headset jacks without damaging MSI/SC board circuits.

 Application-programmable channel gain controls the volume for each channel and matches line levels from different telephone sets and devices.

 Station status event detection collects call traffic statistics and enables cost-effective management of call setup/call termination.

 The MSI/SC board can be used to establish conferences between any of the time slots on the SCbus and the station devices connected to MSI/SC station modules. Call conferencing connects two to eight parties for up to 32 channels of total conferencing.

 The following features are provided:

• two- to eight-party conferencing
• up to 32 conferencing resources total
• conferences of any combination of agents and network channels
• hidden training for smooth entry of new conferees without disruptive training noise
• supervisory monitoring of agents without disrupting the conversation
• coaching feature allowing supervisors to speak to agents without the customer hearing the supervisor; customer can hear the agent at all times (no switching).
• programmable channel gain to optimize volume levels for station devices
• programmable cadence allows you to select and set ring cadence options (UNIX and Windows NT only)
• splash ring to prevent glare - immediately applies a 500 msec burst of ring to station sets when the application issues a ring command (UNIX and Windows NT only)

 Configurations

 Use the Dialogic MSI/SC to expand the capabilities of switching and station interface applications and to design economical cost-effective computer telephony applications of any size. The MSI/SC board installs in IBM PC AT (ISA bus) and compatible computers (80386, 80486 or Pentium-based PC platforms).

 In a typical telemarketing application, a voice board or other resource board dials outbound numbers. When the system detects a called party going off-hook, the call is passed to a local operator through an available channel.

 For inbound applications, calls that are not handled by voice automation can be passed directly to a live agent. The agent can be alerted to the incoming call by a power ring or zip tone.
 Two MSI/160SC boards can be used to service all 30 channels of an E-1 network.
 You can use the MSI/SC board as a conference resource, independent of the on-board station interfaces. For example, an MSI/SC board added to your computer telephony system can provide conferencing to PBXs lacking that capability.
 MSI/SC stations can be independently assigned to any SCbus time slot, enabling station-connected agents or devices to serve as shared resources. Multiple MSI/SC boards can be installed in a single system, each sharing the same PC interrupt. For example, two MSI/240SC boards can be cabled to four D/240SC-T1 voice and T-1 boards, via the SCbus, creating a 48-agent-by-96-trunk call center. Applications can exploit the switching ability of the SCbus to create economical agent-to-call ratios. The MSI/SC hardware permits up to 16 MSI/240SCs in a single system. (System size limitations depend on the application and host processing power.)
 
 

NOTE: The MSI/SC should not be connected directly to the public telephone network. Use only with local headsets and telephones.

 Software Support

 The MSI/SC is supported by Dialogic System Software and Software Development Kits for MS-DOS, OS/2, UNIX and Windows NT. These packages contain a set of tools for developing complex multichannel applications.

 Functional Description

 The signals from each station device (phone, headsets, etc.) enter the line circuitry on the MSI/SC board through an ESD filter and are applied to a line interface on a MSI/SC baseboard or daughterboard. This filter protects the MSI/SC board against conditions such as electromagnetic interference (EMI) and voltage transients on the station device lines, including electrostatic discharge and transients generated by plugging in or removing operator headsets.

 Each MSI baseboard or daughterboard contains eight line interfaces and Dual Subscriber Line Audioprocessing Circuits (DSLACs) for CODEC (COder/DECoder) functions. Each line interface provides loop start current to one station device. Loop start current to station devices (from -24 VDC power supply) can be turned on or off individually by the application. The line interface also separates the inbound signal into an audio signal, which is sent to the DSLAC, and an on-hook/off-hook signal, which is transmitted by the on-board control microprocessor via the input/output buffer and host PC AT bus to the application program.

 The CODEC converts inbound audio from analog to 8-bit digital audio signals and outbound audio from digital to analog. The gain of the CODEC is controlled separately for each station device through the application. The DSLAC then transmits the digital audio signals to the crosspoint switch with conferencing circuit.

 The crosspoint switch receives digitized audio signals from the DSLAC and channel switching/connection signaling from the on-board control microprocessor for each channel. The crosspoint switch acts as the traffic coordinator to route PCM audio data from the local station interfaces to DSPs and the SC2000 bus.

 The crosspoint switch routes PCM data to and from the SCbus, any baseboard or daughterboard line interface, or DSP. A conference bridge feature of the MSI/SC board enables a user or an application to establish conferences (connect two or more parties) between any of the time slots present on the SCbus or station interfaces.

 The control microprocessor interprets and executes commands from the host PC and controls all operations of the MSI/SC board via a local control bus. Communications between this microprocessor and the host PC is through the shared RAM interface to the PC ISA bus. All operations are interrupt-driven to meet the demands of real-time systems. All MSI/SC boards installed in the PC share the same interrupt line. When the system is initialized, firmware to control all board operations is downloaded from the host PC to the on-board RAM. This downloadable firmware gives the board all of its intelligence and enables easy feature enhancement.

 The Board Locator Technology circuit operates in conjunction with a rotary switch to determine and set nonconflicting slot and IRQ interrupt-level parameters. This feature eliminates the need to set confusing jumpers or DIP switches.
 
 

Technical Specifications*
 

Number of ports	8, 16 or 24
Max. boards/system	16
Resource sharing bus	SCbus
Control microprocessor	Intel 80C186 @ 16 MHz
Digital signal processor	Motorola DSP56002 @ 57 MHz, with 32 K word private, 0 wait state SRAM
HOST INTERFACE:
Bus compatibility	IEEE P996 ISA compatible (IBM PC XT/AT)
Bus speed	12.5 MHz maximum
Bus mode	Automatically configures to 8 or 16 bit transfer mode
Shared memory	8 Kbyte page
Base addresses	8000h to E800h, on 32 K boundaries. All MSI/SC boards share the same base address. Shared memory is page mapped in/out dynamically as needed.
Interrupt level	IRQ 2/9, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, software selectable. One IRQ is shared by all MSI/SC boards.
I/O ports	None
CONFERENCING:
Group sizes	2 to 8 ports
Maximum ports	32
Modes	Duplex, monitor, coach, pupil
Notification tones	Tones automatically generated when caller is added or deleted, periodically for tariff notification, or under application control
Programmable Tone Parameters
Frequency	300 Hz to 3400 Hz, 31.25 Hz increments
Level	-10 dBm0 to -40 dBm0, 3 dB increments
Duration	10 ms to 4 sec, 10 ms increments
Interval between	2 sec to 17 minutes (Tariff Tone only)
TELEPHONE INTERFACE:
Connectors	RJ-21X female for connecting to SA/240 Station Adapter
Signaling type	Loop start originate
Telephone set connection	Two-wire loop start, balanced
Loop current	28 mA +3 mA
Signal level	-3 dBm ±6 dB (telephone line, approx.)
Impedance	600 Ohms ±7%
2-wire return loss	Better than 25.0 dB.
Receive signal/noise ratio	36 dB +3 dB (-10 dBm, 1004 Hz)
Noise-to-ground	32 dBrnc +3 dB
Idle channel noise	15 dBrnc +3 dB
Channel-to-channel crosstalk	-70 dB max. (0 dBm, 1004 Hz)
Open loop voltage	-17 VDC +3 VDC (with -24 volt supply)
Closed loop current	limited to -35 mA max.
Loop length	3500 feet, typical (24 gauge)
Clock rate	Expansion: 2.048 Mb/s or 1.544 Mb/s
	Independent: 1.544 Mb/s
PCM algorithm	A-law or µ-law, software selectable
Ring voltage (-R models)	86 Vrms @ 20 Hz
Ringer Equivalency
Number (REN)	5 REN max. for each bank of 8 channels
	Channels 1 - 8 (baseboard), 5 REN
	Channels 9 - 16 (daughterboard #1), 5 REN
	Channels 17 - 24 (daughterboard #2), 5 REN
POWER REQUIREMENTS:
+5 VDC	2.5 A max.
+12 VDC	50 mA max.
-12 VDC	125 mA max.
External power	-24 VDC 1.0 A
Operating temperature	0°C to +50°C
Storage temperature	-20°C to +70°C
Humidity	8% to 80% noncondensing
Form factor	PC AT, 13.34 in. long. 0.79 in. wide, 4.8 in. high
SAFETY AND EMI CERTIFICATIONS:
United States	FCC Part 15 class A
	UL: E9680V
Warranty	3 years standard

* All specifications are subject to change without notice.

 MSI/SC Power Module*

 The MSI/SC Power Module generates -24 volts to power the MSI daughterboard station interface loop. One power module is required per MSI baseboard when station modules are used. The Power Module connects to a prewired power cable attached to the MSI/SC board.
 
 

Input connector	Standard North American AC input
Output connector	Multipin connector
Internal fusing	Not user replaceable
POWER REQUIREMENTS:
Input voltage
90 to 265 VAC	47 to 63 Hz
Output voltage
-24 VDC	1 A
Output ripple	240 mV (peak-to-peak)
Percent regulation	±2% load
Operating temperature	0° C to +50° C
Size	2 in. long, 6 in. wide, 3.5 in. high
Warranty	18 months standard

* All specifications are subject to change without notice.

 SA/240 24-Port Telephone Station Adapter*

 The SA/240 Station Adapter connects up to 24 local telephones (such as 2500-type telephone sets) or up to twelve AIA/2 Audio Interface Adapters (two-line external audio adapter), or some combination of these devices, to an MSI/SC board. The SA/240 adapter includes a cable assembly and an RJ-11 interface adapter unit. The cable has a DB-37 connector that connects to the MSI/SC board and an RJ-21X, 50-pin standard USOC telephone connector (the standard multiple line telecom interface) that connects to the adapter unit. The adapter unit converts the RJ-21X connectors into 24 standard RJ-11 connectors for easy connection to standard telephone sets. This adapter can be mounted to a convenient vertical surface.
 
 

ADAPTER UNIT:
Telephone set connection	RJ-11 standard connectors
Number of RJ-11 connectors	24
Front panel connector	RJ-21X jack
CABLE:
Length	4.5 ft (1.3 m), shielded
Connectors	DB-37 to MSI/SC board
	RJ-21X, 50-pin male standard USOC to adapter unit
Size	6.0 in. (15.4 cm) long, 3.8 in. (9.7 cm) wide, 1.25 in. (3.2 cm) high (excluding RJ-21X connector); 1.5 in. ( 3.8 cm) high (including RJ-21X connector)
Weight	24 oz.
Operating temperature	0° C to +50° C
Storage temperature	-20° C to +70° C
Humidity	8% to 80% noncondensing
SAFETY AND EMI CERTIFICATIONS:
United States	UL: 94V-O
Canada	CSA: Listed
Warranty	18 months standard

* All specifications are subject to change without notice.

 Optional Components

• MSI Power Module (99-0200-003) or user supplied -24 VDC power supply (one per MSI/SC board)
• SA/240 Station Adapter Kit for MSI/SC (95-0004-001). Includes cable and breakout box. Use the following numbers to order separately:
— RJ-21X Cable for MSI/SC (86-0083-001)
— RJ-21X to RJ-11 Breakout Box (71-0004-001)