Starplus Triad Xts Installation Digital Key Telephone System Instructions Guide

							IP Telephony Standards and Protocols D-15
Appendix D - Voice Over the Internet Protocol
IP Telephony Standards and Protocols
TheDiscoveryVoIP card uses the H.323 Revision standard for call processing. This is an
updated version of the H.323 standard. It provides a set of standards defining real-time
multimedia communications and conferencing over packet-based networks. These
standards define how components that are built in compliance with H.323 set up calls,
exchange compressed audio and video, participate in multi-unit conferences, and operate
with non-H.323 endpoints.
The IP telephony standards/protocols shown inTa b l e D - 4are adhered to by theDiscovery
VoIP card.
Table D-4: IP Telephony Standards/Protocols
Standard Description
H.323 Revision 2 Supports H.323 terminals and is the basis for all IP telephony.
H.225 Media Packetization Provides media packetization and synchronization for video/
audio telephony on non-guaranteed quality of service LANs.
H.245 DTMF Signaling
Close Logic Signaling
Round Trip SignalArbitration of GSM compression -- provides the new audio
capabilities and supports the signaling entities required for call
control functions for multimedia communications, while it
specifies the in-band signaling protocol necessary to establish a
call, determine capabilities, and issue the commands necessary
to open/close the media channels.
Supports signaling of a pair of associated unidirectional channels
which allows for the establishment of a T.120 data channel.
Allows determination of the round trip delay between two
communicating channels.
G.165 Echo Cancellation When echo is present, a preprogrammed button is available to
increase or decrease the latency of that call. Upon termination of
each call, the unit restores the default setting.
G.711 Pulse Code Modulation of
Voice FrequenciesTransmits and receives A-law and U-law PCM voice at digital bit rates
of 48, 56, and 64 Kbps. It is used for digital telephone sets on digital
PBX and ISDN channels. Support for this algorithm is required for
ITU-T compliant videoconferencing. (slowest protocol)
G.723.1 5.3 Kbps compression for
dual rate speech coders
for multimedia
communicationsRuns at 6.3 or 5.4 Kbps a compression and uses linear predictive
coding directory for an open architecture to ensure connectivity
with other switches. Moreover, this compression helps provide
smoothness. (Default)
G.729 Speech encoding 8 Kbps Encodes/decodes speech at the rate of 8 Kbps using conjugate-
structure, algebraic-code excited linear predictive methods.
Q.931 Messages:
-Progress
- Setup
- AcknowledgmentCreates a unique global identifier that allows all messages
associated with a call to be interoperable between the
registration, administration and status protocol used in IP
networks utilizing the Q.931 signaling protocol used in
circuit-switched telephony networks.
Supports messages that are used for call signaling, including all
mandatory and conditionally mandatory messages, some
optional messages and information elements, and the facility
message defined in Q.931 and Q.932. 
						

							D-16Vo I P G l o s s a r y
Appendix D - Voice Over the Internet Protocol
VoIP Glossary
This table describes the Internet Telephony terms used in this section:
Term Definition
Asynchronous
TransmissionA method of data transmission which allows characters to be sent at irregular intervals by preceding each
character with a start bit and following it with a stop bit
bps Data bits per second, also known as Baud Rate
DTMF Dual Tone Multi-Frequency
Gateway Bridges H.323 conferences to other network communications protocol and multimedia formats
Header Protocol control information located at the beginning of a protocol data unit. This portion of a message
contains information that will guide the message to the correct destination by including sender’sand
receiver’s addresses, routing instructions, etc.
Hub A physical connection for multiple LAN devices. Commonly, 10/100 Base-T Ethernet support through a RJ-45
connection is provided.
IANA Internet Assigned Number Authority–the one agency that issues all IP addresses
ISP Internet Service Provider. A vendor who provides access to the Internet and World Wide Web.
Jitter Network-provided variations in latency for different packets, which is particularly disruptive to audio
communications.
LAN Local Area Network
Latency A term used to indicate waiting time or time delay in delivering packets over a network.
Octet Three digits between decimal points in an IP address. There are eight binary bits for numbers from 0-255,
making it an octet.
PSTN Public Switching Telephone Network
QoS Quality of Service
Router A unit that routes Packeted information interfacing two separate networks
TTL Time to Live. Used with the IP protocol, it is the time after which the packet can be deleted from the network.
This is typically measured in milliseconds.
VoIP Voice Over Internet Protocol
VPN Virtual Private Network. The definition is very broad. Typically, this means some form of“virtually private”
network created over a public network (i.e., the Internet) using encryption technologies to create a secure
connection between two or more sites.
WAN Wide Area Network. A computer or voice network bigger than a metropolitan area. Sometimes used to define
a network that spans a metropolitan area which could also be called a MAN (Metropolitan Area Network). 
						

							E
Customer Database
Programming
This appendix provides information about database programming. Use the detailed
procedures contained in other chapters and appendices for actual programming via
executive display telephone. Use the Customer Database Worksheets in this appendix
to help keep track of the system programming changes made for each individual
system. 
						

							» » » » » » »  NOTES   » » » » » » » 
						

							IntroductionE-3
Appendix E - Customer Database Programming
Introduction
TheXTSsystem is programmed to meet each customer’s individual needs. All programming
is done at any 24-Button Executive Telephone as the programming station or through an
ASCII terminal or PC. The digital display model is required for programming.
When the programming mode is entered, the digital telephone being used no longer
operates as a telephone but as a programming station with all of the buttons redefined. The
keys on the dial pad are used to enter data fields (Program Codes) associated with system,
station, and CO line features as well as specific data that requires a numeric entry. Flexible
buttons toggle on or off features, or enable entry of specific data fields. LEDs and the LCD
display provide a visual indication of entered data and their value.
Programming is also performed using an ASCII terminal, or a computer capable of emulating
an ASCII terminal. This form of programming is done locally (on-site) by connecting the
terminal directly to the RS-232C connector on the Main Processing Board (MPB) or is
performed remotely (off-site) through the use of the 19.2K baud modem. The method and
steps to program the system via a PC are identical to those used when programming from a
digital key set. A button to keyboard mapping is provided (refer toFigure E-2 on page E-5)to
help minimize familiarization and training time.
The system must be initialized to load default data into memory at the time of installation. If
this pre-programming is acceptable to the customer, initialization is all that is needed. Refer
toTa b l e F - 1 o n p a g e F - 3for a listing of all the default values.
When features are programmed, tones are provided to determine if a correct or incorrect
entry has been made. A solid one second tone indicates the data was accepted. An
interrupted tone means an error was made. When this occurs, re-enter the data and
information.
Until new data is entered and accepted, the system continues to operate under default or
previously entered values.
The system database is updated on a real-time basis as new data is entered, by pressing the
Hold button. The system continues to operate with the current database and is updated with
any newly entered or changed data without interruption to telephone operation or call
processing in progress. However, if for example a station’s attributes are changed while that
station is off-hook on an active call, the newly entered data does not take effect until the
station goes on-hook or becomes idle. 
						

							E-4Introduction
Appendix E - Customer Database Programming
When using a PC to program the system, the following chart presents the data terminal
characters that are equivalent to the key set buttons.
Figure E-1: Data Terminal Program Codes Cross Reference
Some features must have more than one data field programmed for that feature
to work. This information is stated in the instructions.
adm>
REMOTE ADMIN KEY DEFINITION
Keyset   Term   Keyset   Term   Keyset   Term
---------------------------------------------
0        0      FLEX 1   Q      FLEX 13   D
1        1      FLEX 2   W      FLEX 14   F
2        2      FLEX 3   E      FLEX 15   G
3        3      FLEX 4   R      FLEX 16   H
4        4      FLEX 5   T      FLEX 17   J
5        5      FLEX 6   Y      FLEX 18   K
6        6      FLEX 7   U      FLEX 19   L
7        7      FLEX 8   I      FLEX 20   :
8        8      FLEX 9   O      FLEX 21   Z
9        9      FLEX 10  P      FLEX 22   X
*        *      FLEX 11  A      FLEX 23   C
#        #      FLEX 12  S      FLEX 24   V
TRANS    B      MUTE     N      ON-OFF    M
FLASH    ‘      HOLD     CR
adm>
; 
						

							IntroductionE-5
Appendix E - Customer Database Programming
Figure E-2: Programming Button Mapping
FLEX 5 FLEX 6 FLEX 7
FLEX 8
FLEX 9FLEX 10FLEX 11
FLEX 12
FLEX 13
FLEX 14FLEX 15FLEX 16
FLEX 17
FLEX 18FLEX 19
FLEX 20
FLEX 21FLEX 22FLEX 23
FLEX 24
TYUI
O
P
AS
DF
GH
J
KL;
Z
XCV
FLEX 1 FLEX 2 FLEX 3
FLEX 4
Q
WER 
						

							E-6 Program Mode Entry (Key Station)
Appendix E - Customer Database Programming
Program Mode Entry (Key Station)
Programming is performed at any 24-button Digital Display Terminal. Programming is always
done at this type of station regardless of the class of service or which station has been
assigned the attendant(s).
To enter the Program Mode:
1. Press the ON/OFF button (optional). LED lights and intercom dial tone sounds.
2. On the dial pad, press [
✳][✳][3][2][2][6] (default password). A confirmation tone sounds.
3. The ON/OFF button LED is lit. The system is ready to program.
Program Mode Entry (Data Terminal or PC)
A PC terminal connected to the RS-232C port on the MPB, or remotely through the
19.2K baud modem, is used for database programming. When using a data terminal (ASCII or
PC capable of emulating an ASCII terminal) on-site or locally, to program the system:
1. Press  on the terminal.
2. Enter the password [default =3226vodavi], and press  again. Proper entry of the
password results in the Adm> prompt. Proceed with programming referring toFigure E-1
on page E-4for terminal characters that represent the key set buttons. By entering [?]
from the terminal, a Help screen displays.
When entering the system remotely via a PC, access to the modem is accomplished by
accessing Port 499 through a direct ringing assignment or through DISA or by being
transferred to Port 499.
Initialization
The system has been preprogrammed with certain features called default data (refer to
Ta b l e F - 1 o n p a g e F - 3). These features are loaded into memory when the system is initialized.
To Return the Database to the System Default Values:
1. PlaceSwitch#8ontheMPBintheONposition.
2. Turn the power off and on to initialize the system database to the default.
3. Once database is initialized, place Switch #8 in the OFF position to protect the database.
The system should be initialized when installed or at any time the database has
been corrupted. 
						

							Database Programming Worksheets E-7
Appendix E - Customer Database Programming
Database Programming Worksheets
Before attempting programming, it is strongly recommended that customer database
worksheets be prepared (Refer to“Programming Tables”on page E-12). These worksheets
should become part of the permanent record of customer programming. Refer to the
following sections when preparing the worksheets.
Database Upload/Download Routine
The Database Upload/Download Routine (FLASH 86) provides a maintenance facility which
permits the user to download the database to a PC, when a software change is made or when
the system needs to be initialized and reprogrammed. The Upload/Download Routine
facilitates the programming of a database on an in-house system which is downloaded to a
PC and then uploaded to a system in the field.
After the system maintenance is completed, the file saved in the PC can then be uploaded to
the system.
Upload/Download through Remote Administration
First, connect one end of an RS-232C serial cable from the RS-232C connector on the MPB to
the desired Comm Port on the PC.
Figure E-3: KSU to PC Connection Configuration
Then load a communication software package (e.g., Hyperterminal) into the PC and complete
the following steps to reconfigure the system.
All trace modes such as: SMDR (Flash 21), ICLID (Flash56), and Maintenance Event
Traces MUST be turned off before a download is performed!
Default telephone type = 24 button model
Use a straight-through DB-9 to DB-9 (female to female) cable.
(DB-9) Connection PC Side (DB-9)
11
22
33
44
55
66
77
88
99 
						

							E-8 Database Upload/Download Routine
Appendix E - Customer Database Programming
HYPERTERMINAL -- Uploading a Database File
After opening HyperTerminal, and the New Connection screen displays, complete the
following steps:
1. Type a connection name and select the appropriate icon, then click .
2. When the Phone Number screen displays, change the setting in the Connect Using box
to: Direct to COM1, and then click .
3. Once the COM1 Properties screen displays, change the settings as shown, and then click
.