GTE Omni Si Database Technical Practices Issue 1 Manual

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Digital Featurephone
voice f---)non-voice
control 
& data
control & dataL
Figure 5.8Digital Featurephone Data Packet Flow
DVCIP
IMPRTf3 voice
pt+iL non-voice
Mini-Packet
5.7 The following are characteristics of MPP (Mini-Packet
ProtocolProtocol) (see Figure 5.9).
Characteristicsl Link runs at 256 Kbps, ping pong (ping pong = once bus
seizure is established, link runs at 128 Kbps in each direction).
* Each mini-packet consists of:
- Sync Flag (l/2 byte)
- Header(2 byte-9
- Data(8 bytes)-...

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PD-200 DATA OPTION6.0 In addition to the voice features available with the OMNIOVERVIEWPABX, the PD-200 Data System (Figure 6.1) provides:
0 Separate data and voice switching
- Voice traffic uses circuit switching.
- Data traffic uses packet switching.
0 ASCII (American National Standard Code for Information
Interchange) asynchronous data at speeds up to 19.2, Kbps
(Kilobytes per second).
l 
CCITT (Consultative Committee on International Telegraphy
and Telephony) X.25 synchronous data...

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l Mass storage system of the hard and floppy disk- Access from the data system to the hard disk is via the SASI(Shugart Associates Standard interface) bus (Figure 6.2).
- The hard disk accesses the generic programs and the data
base.
VOICE
ElCEC BUSF’LE SWITCH+ ’ ’ ’ ’ ’ ’ . ’ -b y!s;;;;Ayl
FB-17220-BOAI 1
I I; 1iI 1
ADMINISTRATIVE ’SAYII 1II IANDASSEMBLY EC-22199-ABUSII L --______________ - MAINTENANCEL------_--_-___-__-_PROCESSOR:______________________________PEC BUS
(ADMP-C)...

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Data Components6.1.2 Components of the data system that are separate from the
voice switch include:l 
Netlink processor for control of data and call setup or
takedown
l Administrative processors that maintain and administer the
data switch featuresl Facilities processor that performs call processing functions
and interfaces with the PEC bus.Advanced data features provided by the data system include:
l Packetization of data and control information for transferthrough the system
l Speed...

TL-130500-1001Administration6.2 Data system administration functions are given as an
extension of the existing voice system. The facilities that provide
the administration functions are based separately. Access to
these functions, which include Recent Change, maintenance,
accounting, diagnostics, and event reporting, is through the voice
switch maintenance console and a data maintenance console,
that interfaces the system via the ADMP (Administrative
Maintenance Processor) (Figure 6.3).
S-108NOTE: A...

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Data Transport
6.3 Data switching that does not affect voice capacity is possible
because of the PTS (Packet Transport System). A new bus
structure, called the LPB (Local Packet Bus), has been added to
the backplane. The LPB is only for data transfer (Figure 6.4).
Self-routing entities, called mini-packets, perform
communication within the packet transport system (see
paragraph 6.4). Each device communicates with the switch by
means of the PTS (Packet Transport System), and is assigned...

TL-130500-1001Packet Line Address6.3.1 This paragraph describes the PLA (Packet Line Address).
l The PLA gives the internal address of the component to which
it is assigned:
- This assignment is performed automatically by the data
system.
- The assignment is based on the hardware configuration of
the system.
l The PLA has no relationship to the subscriber line number that
the user sees.
l The PLA is made up of 14 bits of address information.
Devices that communicate over the PTS use a FGBS proprietary
or...

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The VPLC (card type VPLO and VPLl) connects remote
processing devices to the PABX. These devices are:
l APM (Asynchronous Packet Manager) which connects to
asynchronous devices that operate at lower speeds
l SPM (Synchronous Packet Manager) which connects to
synchronous devices that usually operate at a higher speed
(9.6-64 Kbps.)
l DFP/APM (Digital Featurephone with APM) which connects to
asynchronous devices that usually operate at a higher speed
The VPLC2 (card type 
VP20) connects...

TL-130500-1001APM
SPMSPM 
j
Figure 6.5,Remote ProcessorNPLC (Voice Packet Line Card) Connection
s-112
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