GTE Omni Si Database Technical Practices Issue 1 Manual

							SVR 5210TL-130500-1001
When an Analog Featurephone goes off-hook, a digital
message is sent to the system as a request for service message.
Analog Featurephone station ringing initiated by the system
sends the appropriate message to the Analog Featurephone.
This directs the type of alerting cadence that the Analog
Featurephone reproduces.
When dialing, the Analog Featurephone user hears the DTMF
tones. The digital information is sent to the system via the data
link and the system’s DTMF receivers. These do not decode the
information. If the Analog Featurephone user accesses a trunk
requiring DTMF signaling, the system can cut through the analog
voice path so that the dialed digital DTMF tones generated in the
Analog Featurephone pass through the system to the trunk.
Other applications may require the system to send either DTMF
or DP signaling digits, which are an inherent system feature.Power17.6.1 Power for the Analog Featurephone comes from a 24
VAC transformer (connected to a local 115 VAC power source), a
-48 VDC source (such as power pack/charger assembly), or the
system power distribution point.
Digital17.7 The Digital Featurephone has many of the same features
Featurephoneas the Analog Featurephone, such as user programmable
functions. Unlike the Analog Featurephone the Digital
Featurephone connects directly to the system by a digital data
link. This connection incorporates the Digital Featurephone to
the distributed microprocessor system, allowing for a continuous
real-time control and response communications.
NOTE: A CODEC chip on the PLCC card converts analog to
digital for the Analog Featurephone. The CODEC chip for the
Digital Featurephone is in the phone itself.
l Microprocessor-controlled, desk-top telephone instrument.
l Available with either 8 or 16 pushbuttons and associated 
LEDs.The AOM (Add-On Module) provides 30 additional
pushbuttons.)
0 Available with 16- or 24- character liquid crystal display.
l Available in voice only or voice with data configurations.
Digital Featurephones with data option include an RS-232-C
jack in the rear of phone.
l 47 programmable voice features available to user
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l Interfaces with the system via universal slots. For voice only,
the VCIP FB-17235 provides the control link and voice
channel interface between the system and digital phone (one
tip and ring pair required). The 
DVCIP FB-17236, which is
used for voice/data applications, circuit switches data via 
CD-100. The VPLC2 FB-17246-A, which is used for voice/data,
switches voice and data via PD-200.
0 Powered by either a 24 VAC transformer or -48 VDC
l System can support up to 127 Digital Featurephones
l Peripheral equipment Digital Featurephones voice and data
-Interfaces with the system via universal slots. The
VPLUVPLC2 provides the voice/data mini-packet link
interface between the system and the Digital Featurephones.
-Powered by either a 24 VAC transformer or -48 VDC
-Provides RS-232-C jack interface for data terminal/printer
devices
S-234-The AOM (Add On Module) for the Digital Featurephone and
Analog Featurephone are different (the AOM designed for the
Analog Featurephone is not to be used with the Digital
Featurephone as it could damage the phone). Check that the
tag on the back of the instrument specifies RS-232-C.
l Peripheral equipment Digital Featurephone 
/APM-Microprocessor-controlled, desk-top telephone instrument
-Available with either 8 or 16 pushbuttons and associated
LEDs-AOM (Add On Module) provides 30 optional pushbuttons
-Available in 16 or 24 character liquid crystal display
-47 programmable features available to user (use feature
code 41 for data button)
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-Data button provides status indicator. Top LED is link light.
Bottom LED is call light and indicates incoming calls.
-Supports simultaneous voice and data calls.
-Configured as single-line or multi-line sets.
-Equipped with internal APM.
-Interfaces with the system via universal slots. TheVPLCVPLC2 provides the voice/data mini-packet link
interface between system and Digital Featurephone.
l Powered by either a 24 VAC transformer or -48 VDC supplied
by an external source.
l Provides RS-232-C jack interface for data terminal/printer
devices operating at speeds up to 19.2 Kbps.
The Digital Featurephone provides voice communication and,
optionally, data communication using a single pair of telephone
wires.
* Voice-only communication interfaces with the system via the
FB-17235-A 
VCIP (Voice Control Interface Processor) card
located in PCMUS.
l Voice and CD-100 (circuit switched data) communication
interfaces with the system via the FB-17236-A DVCIP (Data
Voice Control Interface Processor) card located in PCMUS.
l Voice and PD-200 (packet switched data) communication
interfaces with the system via the FB-17246-A VPLC2 card
(Voice Packet Line Card 2) located in PCMUS.
When the Digital Featurephone connects to the DVCIP, any data
device connected to the Digital Featurephone inter-connects to
the system’s PCM bus. The data circuit in the Digital
Featurephone provides an integral asynchronous terminal
interface which interfaces data terminal equipment with the
system. As an option, the Digital Featurephone can be strapped
to interface data communication equipment instead.
When used with PD-200 data, the data circuit in the Digital
Featurephone provides an internal APM (Asynchronous Packet
Manager) to interface data terminal equipment with the system.
Types of Digital Featurephone available are summarized in Table
17.2.
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NOTE: Three types of mini-packets are transmitted between the
DFP and SID (Software Identification).A single twisted pair
multiplexes these mini-packets :* Voice (transparent) mini-packets. These mini-packets carry
only PCM (Pulse Code Modulation) voice samples between the
CODEC in the telephone and the PCM bus in the switch.
l Voice control (non-transparent) mini-packets. These 
mini-packets carry instrument control messages between the ICP
(Instrument Control Processing) software in the telephone and
the telephone control software in the 
VCIP and DVCIP cards.
l Data (non-transparent mini-packets). These mini-packets
carry user data between the integral packet manager and
some other data end point (another Digital Featurephone or an
APM). This end-to-end data transfer takes place only when
a data call is established.
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Table 17.2Types of Digital FeaturephonesHE-867832-WT14
16-character displayVPLC2(packet switched
packet switched
SVR 5210Figure 17.4 shows the Digital Featurephone and the 
VCIP (Voice
Control Interface Processor) card, the 
DVCIP (Data Voice Control
Interface Processor) card, and the VPLC2 (Voice Packet Line
Card 2) card. The Digital Featurephone contains a CTU
(Communications Terminal Unit ) microprocessor chip, a MPRT
(Mini-packet Receiver/Transmitter) chip, a VPAD (Voice/Packet
Assembler-Disassembler) chip, a combination chip that
combines the functions of a CODEC (Coder/Decoder) and a filter,
and a 
TKDI (Timing and Keyboard/Display Interface) chip.
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LPB
BUSPEC
BUS
“CIPPCM
“‘I /BUTTONS
LED’s
DATA
OPTION
CARD TL-130500-1001
DVCIPPCM
HUS
PLC, HUSI II
gure 17.4I
Block Diagram of Digital Featurephone with VCIP or DVCIP Card
The CTU has a 6502 microprocessor with 2 kilobytes of ROM
(Read-Only Memory), 64 kilobytes of RAM (Random Access
Memory), and DTMF tone generation circuitry based on 
ROM-stored patterns. The CTU controls all telephone functions and
packet manager functions (with data option card equipped).
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The VCIP card receives mini-packets from the eight digital
phones connected to it by twisted 
paris. The VCIP card, by its
eight MPRT chips, segregates the mini-packets into transparent
and nontransparent mini-packets. Nontransparent 
mini-packets are presented to the 6502 microprocessor for
processing. Transparent mini-packets are broken down into
eight 64 Kbps PCM streams that are multiplexed into the
allocated time slots on the PCM bus. Multiplexing each PCM
stream to the correct PCM bus time slot is gated from the 
OMNISI switch via three channel-select leads and a board-select
lead on the PCM bus. For each new voice call, the 
OMNI SI
switch reallocates a new time slot. This allocation remains
constant for the duration of the call.
Converse functions performed by the 
VCIP card include initiating
control mini-packets for transmission to the telephones and
extracting PCM bit streams from the PCM bus. The 
VCIP card
puts the PCM stream into transparent mini-packets by its 
PADSand sends them to the transparent ports of its 
MPRTs for
transmission to the telephone. In both instances, the 
VCIP card
determines which of the eight packet devices is the destination.
The card presents both transparent and nontransparent 
mini-packets to the corresponding MPRT for multiplexing onto the
destination twisted pair. The three channel-select leads on the
PCM bus determine the destination device for transparent 
mini-packets. The destination device for nontransparent 
mini-packets is determined from the context currently being
processed by the telephone control software. Each context
corresponds to one of the eight telephones which, in turn,
corresponds to one-of-eight channel identifications in the
interface messages to or from the common control.
Data Voice17.7.2 The Digital Featurephone can accommodate the CD-l 00
Control interfaceor the PD-200 data option. When equipped with either
Processordata option, the Digital Featurephone provides an RS-232-C
Card Operationconnector that accepts a plug-in ASCII terminal and extra
memory to take care of the data buffering. The data option card
contains a UART (Universal Asynchronous Receiver/Transmitter)
that terminates the RS-232-C interface data leads. The data
phone supports simultaneous voice and data calls on a single
twisted pair connection to the 
OMNI SI switch. Digital
Featurephones equipped with the data option require a different
interface card. The DVCIP (Data and Voice Control Interface
Processor) is used in support of the CD-100 data option. The
DVCIP card provides the capacity of four phones, each
connected by an individual twisted pair. The DVCIP separates
the transparent mini-packets received from the phone, converts
them back to PCM form, and presents them to the PCM bus on
four even channels (0, 2, 4, and 6) only for that card position.
The nontransparent mini-packets are also separated, but into
voice-control mini-packets and data mini-packets.
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The voice-control software locally processes the voice-control
mini-packets. This software is essentially identical to that used
in the VCIP card. When messages associated with a voice call
to or from the phone are processed by the control software, the
interface messages to the 
OMNI SI switch are tagged with the
even channel identification of the odd-even channel pair.
Conversely, when messages associated with a data call to or
from the phone are processed by the control software, the
interface messages to the 
OMNI SI switch are tagged with the
odd channel identification of the odd-even channel pair.This
operation is true if the phone is in the data call setup mode or
when a call terminating from the odd channel is being processed.
In either case, the interface message communication with the
OMNI SI switch is by the OMNI Sl’s PEC bus. User data mini-packets are framed for transmission on the 
OMNI Sl’s PCM bus,
then are sent unchanged on the four odd channels 
(1, 3, 5, and
7) for that card position. Conversely, the PCM streams switched
by the system to the four odd channels are interpreted as framed
data. Finally, the DVCIP card removes the framing bits and
transmits the mini-packets to the phone on the corresponding
twisted pair.
The distinction between voice calls and data calls is transparent
to the system. Each Digital Featurephone with the data option
has two distinct adjacent equipment numbers and two distinct
unrelated directory numbers, one for voice and one for data. The
phone and its data option use adjacent channels on the same
DVCIP card. The 
OMNI SI regards them as two individual
Analog Featurephones, and makes no distinction between odd
and even channel operation.If a voice phone user were to
inadvertently dial a data transmission or vice-versa, the result
would be transmitted as meaningless noise to either party.
Voice Packet Line17.7.3 When the PD-200 data option is used, the Digital
Card OperationFeaturephone can be supported by either a VPLC or VPLC2 card
(see paragraph 33.0).
Agent Instrument17.8 The Agent Instrument shown in Figure 17.5 is a compact
(PACET)microprocessor-controlled desk-top console unit. It is
programmed to allow the device to operate with other Agent
Instruments within a centralized pool of attendants (CAS Main
application) or service agents (ACD application). Within this
paragraph, the term agent describes both CAS attendants and
ACD agents. The Agent Instrument contains compact electronics
and all controls and indicators for monitoring and controlling calls
processed through the system configured for CAS Main or ACD
applications. Incoming calls can be answered, extended, put on
hojd, or completely relkased from the Agent Instrument by
depressing various pushbuttons on the Agent Instrument.
Outgoing calls can be initiated from the Agent Instrument.
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Figure 17.5 Agent InstrumentThe Agent Instrument has headset or handset jacks located at
the rear and on one side of the console. Supervisory
headsetfhandset monitoring use the rear jacks, while agent’s
headset or handset use the side jacks. The agent’s headset or
handset must be plugged in for the Agent Instrument to operate in
the on-line mode. When the user removes the headset or
handset, the Agent Instrument defaults to the test diagnostic
mode.
A 32-character alphanumeric display across the top of the
Agent Instrument provides the agent with a visible description of
the incoming call. (Refer to Figure 17.6. for a view of the Agent
Instrument console.) The call description indication is present as
long as the attendant is servicing the call and during agent
recalls. The type-of-call display provides the agent with
source and destination call information.
The Agent Instrument includes the following features:
l 26-pushbutton keyboard
l 12-key dial pad
l Call waiting level indicator
l 
Headsevhandset jacks.
l Internal self-test diagnostics.
l 32-alphanumeric character LED display for displaying source
of call information
The Agent Instruments connect by cable to the cabinet. Refer to
TL-130300-1001 for a detailed description of Agent Instrument
installation procedures and cable lengths.
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