HP Model 712/100 hp 9000 series 700 model 712 technical reference manual (a261 - Page 13

Expansion Slot, HP Teleshare Slot, Caller ID, Call Waiting, Conference Calling

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Audio Interface The 712 workstation provides compact disk quality audio input and output in stereo with a 16-bit CODEC (coder-decoder) over a frequency range of 25-20000Hz. A small internal speaker and a stereo headphone mini-plug (118Ω impedance) are provided for output. A stereo line-in and mono microphone mini-plugs are provided for input. Some of the audio features and specifications are listed below: H Programmable rates of 8, 11.025, 16, 22.05, 32, 44.1, and 48KHz., H Programmable output attenuation of 0- 96db. (1.5dB. steps) H Programmable input gain of 0-22.5dB. (1.5dB. steps) H Input monitoring H 16 bit linear, 8 bit µ -Law , or A-Law coding H Signal to Noise of 61dB. for Headphone and Line In and 57dB. for Microphone H Input sensitivity 2.0Vpk (47kΩ) Line-In and 22mVpp (1kΩ) Microphone H Headphone Max. output level of 2.75Vpp (50Ω) A Digital Signal Processor (DSP) based option card is provided to enhance the audio subsystem by providing phone and modem functions. Other special DSP applications can also be down-loaded to this card. Expansion Slot The expansion I/O slot connects to the same signals on the General System Connect (GSC) as does the I/O ASIC. Arbitration signals are provided so that the expansion slot can be a bus master. On the Model 712 Workstation, the expansion slot will be used to provide an optional IEEE 802.5 (token ring) or a second IEEE 802.3 (ethernet) network connection, or other optional I/O interfaces that are covered in Chapter 3. HP Teleshare Slot The Teleshare slot will accommodate the HP Teleshare card that is composed of two complete telephone interfaces. One interface could be devoted to voice applications, and the other could be equipped with V.32bis and V.42bis data modem and fax. In addition to these features, Teleshare will include: H Caller ID H Call Waiting H Conference Calling H Data Rate conversion and mixing H Call Recording and Voice Mail H A multitude of DTMF-based applications **Note: Some of the features listed such as Caller ID and DTMF-based applications might not be supported by all international phone systems. 1-4 General Information Model 712 Technical Reference

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1-4
General Information
Model 712 Technical Reference
Audio Interface
The 712 workstation provides compact disk quality audio input and output in stereo with a
16-bit CODEC (coder-decoder) over a frequency range of 25-20000Hz. A small internal
speaker and a stereo headphone mini-plug (118
Ω
impedance) are provided for output. A
stereo line-in and mono microphone mini-plugs are provided for input.
Some of the audio features and specifications are listed below:
H
Programmable rates of 8, 11.025, 16, 22.05, 32, 44.1, and 48KHz.,
H
Programmable output attenuation of 0- 96db. (1.5dB. steps)
H
Programmable input gain of 0-22.5dB. (1.5dB. steps)
H
Input monitoring
H
16 bit linear, 8 bit
μ
-Law , or A-Law coding
H
Signal to Noise of 61dB. for Headphone and Line In and 57dB. for Microphone
H
Input sensitivity 2.0V
pk
(47k
Ω
) Line-In and 22mV
pp
(1k
Ω
) Microphone
H
Headphone Max. output level of 2.75V
pp
(50
Ω
)
A Digital Signal Processor (DSP) based option card is provided to enhance the audio
subsystem by providing phone and modem functions. Other special DSP applications can also
be down-loaded to this card.
Expansion Slot
The expansion I/O slot connects to the same signals on the General System Connect (GSC) as
does the I/O ASIC. Arbitration signals are provided so that the expansion slot can be a bus
master. On the Model 712 Workstation, the expansion slot will be used to provide an optional
IEEE 802.5 (token ring) or a second IEEE 802.3 (ethernet) network connection, or other
optional I/O interfaces that are covered in Chapter 3.
HP Teleshare Slot
The Teleshare slot will accommodate the HP Teleshare card that is composed of two complete
telephone interfaces. One interface could be devoted to voice applications, and the other
could be equipped with V.32bis and V.42bis data modem and fax. In addition to these features,
Teleshare will include:
H
Caller ID
H
Call Waiting
H
Conference Calling
H
Data Rate conversion and mixing
H
Call Recording and V
oice Mail
H
A multitude of DTMF–based applications
**Note: Some of the features listed such as Caller ID and DTMF-based applications might
not be supported by all international phone systems.