Upload
narse8488
View
232
Download
0
Embed Size (px)
Citation preview
8/13/2019 VoiceMail Server CE Manual
1/25i
Tableofcontents
AMENDMENTS 1
PREFACE 2
1. INTRODUCTION 3
1.1. GENERAL OVERVIEW 3
1.1.1. Layout of the Voice Server Interface (VSI) 3
1.1.2. Communication between a Voice Server and an ISPBX 4
1.1.3. Standard Connection 4
1.1.4. Integrated Connection 4
2. SERVERS 5
2.1. VOICE-MAIL SERVER (VMS) 5
2.1.1. VMS Units 5
2.1.2. Handshaking Protocols 5
3. HARDWARE INSTALLATION 6
3.1. CIRCUIT BOARDS 6
3.2. CABLES 6
4. SOFTWARE INSTALLATION (ON-HOOK PROTOCOL) 7
4.1. INTEGRATED CONNECTION 7
4.1.1. System Software 200/205/300/640 7
4.1.2. System Software 730/735/740/741/800/805/Call@Net 9
5. SOFTWARE INSTALLATION (OFF-HOOK PROTOCOL) 11
5.1. INTEGRATED CONNECTION 11
5.1.1. System Software 205/300 11
5.1.2. System Software 730/735/740/741/800/805/Call@Net 13
A . ON-HOOK PROTOCOL 15
A.1. CALLS FROM AN ISPBX TO A SERVER 15
A.1.1. Format of Calls 15
A.1.2. Timing of Calls 16A.1.3. Server Recovery from User Dialling Errors 16
A.1.4. Call Type Identification 17
B . OFF-HOOK PROTOCOL 18
B.1. CALLS FROM AN ISPBX TO A SERVER 18
B.1.1. Format of Calls 18
B.1.2. Timing of Calls 19
C . TONES AND SIGNAL LEVELS 20
8/13/2019 VoiceMail Server CE Manual
2/25ii
Table
ofcontents
C.1. THE SERVER 20
C.2. THE ISPBX 20
D . EXTRA INFORMATION 21
D.1. CALLS FROM A SERVER TO AN ISPBX 21
D.1.1. Timing of Calls 22
D.1.2. Call Collision 22
D.2. MESSAGE WAITING TYPES 23
8/13/2019 VoiceMail Server CE Manual
3/251
AMENDMENTS
The items that follow are incorporated in the update of this manual from issue 0010 to 0104:
CHAPTER/SECTION DESCRIPTION
All chapters Call@Net introduced.
8/13/2019 VoiceMail Server CE Manual
4/252
PREFACE
This book describes the hardware and software installation required to create an interface that
can be used by various voice server products connected to a SOPHO ISPBX. Examples of
voice servers are:
VMS = Voice-mail server.
The VSI (Voice-server Interface) uses two different protocols (on-hook protocol or off-hook
protocol) and can be implemented in SOPHO ISPBX systems with the following System
Software (SSW):
PROTOCOL
ON-HOOK OFF-HOOK
200 ---
205 205.7
300 300.23
640 ---
SSW 730 730.30
735 735.25
740 740.23
741 741.21
800 800.23
805 and up 805 and up
8/13/2019 VoiceMail Server CE Manual
5/253
1. INTRODUCTION
Voice servers are items of equipment that can be connected to an ISPBX to carry out various
voice functions. Examples of voice servers are:
- VMS (Voice-Mail Server).
A piece of equipment used for the purpose of storing and retrieving voice messages sent
to it by the ISPBX. The messages are stored in "mail boxes" and can be retrieved by the
ISPBX when requested.
- VoiceManager 5xx Series
Starting with a small in-switch Voice Mail solution (VM 505) up to the large VM 560 with
a lot a extra features, like hospitality, fax messages storage, networking of Voice Mail
systems, TeLANophy, remote maintenance, etc.
This book describes:
- the hardware needed to connect a Voice Server;
- the projecting required in the ISPBX;
- the signalling protocol used on the Voice Server Interface (VSI) between a server and the
ISPBX.
1.1. GENERAL OVERVIEW
1.1.1. Layout of the Voice Server Interface (VSI)
Voice Servers are connected to an Analogue Line Circuit (ALC) via two wires (a/b wires) as
shown in figure 1.1.
Figure 1-1 Connection of a Voice Server to an ISPBX
8/13/2019 VoiceMail Server CE Manual
6/254
1.1.2. Communication between a Voice Server and an ISPBX
There are two types of connection between a voice server and an ISPBX, they are the
Standard Connection and Integrated Connection. Both types of connection use DTMF digitsand other tones such as dial-tone and ring-tone.
1.1.3. Standard Connection
With a Standard Connection, the ISPBX treats the server as an ordinary analogue telephone
set; it does not send information that describes the kind of call being sent to the server. The
server has the same facilities assigned to it by the ISPBX as those that can be assigned to an
ordinary analogue telephone set.
1.1.4. Integrated Connection
With an integrated Connection, the ISPBX sends "calling extension number" and "called
extension number" to the server. This can be used to identify the type of call being sent, for
example an internal, external or diverted call.
8/13/2019 VoiceMail Server CE Manual
7/255
2. SERVERS
An example of a voice server is the VMS (Voice-mail server); it is described below.
2.1. VOICE-MAIL SERVER (VMS)
There are various manufacturers of Voice-Mail Server (VMS) equipment and there are two
different handshaking protocols for communicating with ISPBXs.
2.1.1. VMS Units
VMS units used with ISPBXs are made by various manufacturers.
Note: The VMS units used must conform to the protocols offered by the ISPBXs; see
appendices A and B.
2.1.2. Handshaking Protocols
The protocols used are:
- oN-hookVoice-Mail protocol: NVM;
- oFf-hookVoice-Mail protocol: FVM.
Note: The ISPBX with the various System Soft Ware (SSW) will use one protocol or the
other depending on projecting and licensing, it will not support both protocols at
the same time; see table 2.1.
Table 2-1 VMS Makers and Protocols Used
SYSTEM SOFTWARE (SSW)PROTOCOLSUPPORTED
VSI LICENCEREQUIRED * DONGLE NEEDEDISPBXs TBX
SSW 200/205/300/615/
620/630/640/730/740/741/800/805/Call@Net
SSW 615/620/630 NVM NO NO
SSW 205/300 - FVM YES NO
SSW 730/740/741/800/805/Call@Net
- FVM YES YES
* If the ISPBX user has purchased a licence for the VMS facility, it is programmed into the dongle installed in the ISPBX.
In a network of exchanges, a dongle containing an off-hook VSI licence is needed only in the ISPBXs where the off-hookprotocol is used, therefore, not in ISPBXs where the VSI off-hook protocol is not used.
8/13/2019 VoiceMail Server CE Manual
8/256
3. HARDWARE INSTALLATION
3.1. CIRCUIT BOARDS
The Voice-mail server can connected to one or more (depending on the number of lines
between the server and the ISPBX) ordinary ALC circuits.
- Insert an ALC board in a shelf of the ISPBX (or use one that is already installed but not all
circuits are allocated yet);
- Connect the a/b wires of front connectors to the MDF;
- Connect the Voice server to a/b wires in the MDF.
3.2. CABLES
Servers from different manufacturers may have different connectors for the a/b wires that
need to be connected to the MDF. Consult the server handbook to see what cable is
necessary.
8/13/2019 VoiceMail Server CE Manual
9/257
4. SOFTWARE INSTALLATION (ON-HOOK PROTOCOL)
4.1. INTEGRATED CONNECTION
The things that must be projected are:
- System Boundaries and System Options;
- System Timers;
- System Ring Rhythms;
- Number Analysis;
- Group Arrangements;
- Facility Class Marks;
- Message Waiting;- Traffic Class;
- Signalling type for the ALC.
4.1.1. System Software 200/205/300/640
System Boundaries and System Options
System Timers
SSW PE COMMANDS FUNCTION
PROJPA:2039,0; OFF-HOOK Voice-mailprotocol
: OFF
200/205/300 (Selects ON-HOOK Voice-mail protocol)
PROJPA:2032,1; Digit regeneration during aconnection
: YES
PROJPA:1042,1; Service Displays required : YES
640 PROJPA:2027,0; External control of servicedisplays
: NO
PROJPA:2032,1; Digit regeneration during aconnection
: YES
SSW PE COMMANDS FUNCTION
PROJPA:2308,C40; Tone Time Limit = 40 seconds
200/205/640 PROJPA:2341,C40; Tone Timeout on DDI calls = 40 seconds
PROJPA:2300,C20; Dialling Timeout on DialTone
= 20 seconds
8/13/2019 VoiceMail Server CE Manual
10/258
System Ring Rhythms (TMS)
Number Analysis
The numbers chosen as prefixes are examples only.
Group Arrangements
Group arrangements are optional and depend on how the server is used.
Facility Class Marks
Facility class mark 47 'Preferent to operator' must be assigned; this is useful when server
transfers incoming calls to operator.
PROJPA:2394,C05; SSM Ringing time "A" = 5 seconds of soft ring
PROJPA:2308,0,40; Tone Time Limit = 40 seconds
300 PROJPA:2341,0,40; DDI Tone Time Limit = 40 seconds
PROJPA:2300,0,20; Dial Tone Time Limit = 20 seconds
PROJPA:2394,0,05; SSM Ringing time "A" = 5 seconds of soft ring
SSW PE COMMANDS FUNCTION
200/205 PROJPA:2437,,58; SSM Ringing rhythm "A" = 60 ms ON
300/640 800 ms OFF
SSW PE COMMANDS FUNCTION
PROJPA:6095, 00, *590,, 085; Set message waiting prefix
PROJPA:6095, 00, #590,, 086; Cancel message waiting prefix
200/205 PROJPA:6095, 00, *591,, 085; Set message waiting prefix
300/640 PROJPA:6095, 00, #591,, 086; Cancel message waiting prefix
PROJPA:6095, 00, *592,, 085; Set message waiting prefixPROJPA:6095, 00, #592,, 086; Cancel message waiting prefix
SSW OM COMMANDS FUNCTION
200/205 CRGRPA:2000, group DNR,,,; Create group arrangement
300/640
SSW PE COMMANDS FUNCTION
8/13/2019 VoiceMail Server CE Manual
11/259
Message Waiting
Traffic Class
The traffic class of the server DNRs must be set to maximum: usually traffic class 6.
4.1.2. System Software 730/735/740/741/800/805/Call@Net
The ISPBX must be projected as follows:
SSW OM COMMANDS FUNCTION
ASFACM: 29&47&51&57&72, serverDNRs;
Assigns facilities to server DNRs
or 29 = Data protected
ASFACM: 29&47&51&94&72, serverDNRs;
47 = Preferent to operator
205/300 51 = Test call entitled
57 = Service display extension
72 = Post dialling allowed
94 = Voice-mail server (preferred fornew installations)
ASFACM: 29&47&51&57&72, serverDNRs;
Assigns facilities to server DNRs
29 = Data protected
200/640 47 = Preferent to operator 51 = Test call entitled
57 = Service display extension
72 = Post dialling allowed
SSW OM COMMANDS FUNCTION
200/205 CHMWRE:0, *590, #590; Set/cancel message-waiting
type:
0
300/640 CHMWRE:1, *591; #591; 1
CHMWRE:2, *592, #591; 2
PG2 PARAMETERS FUNCTION VALUE SELECTED
BOUND018 = 50 Message-waiting softring time 50x100ms
LOSYSOP019 = NO Voice-mail protocol selection On-hook protocol
LOSYSOP027 = YES Message-waiting queuing softring yes
LOSYSOP047 = YES Postdialling available yes
NETIMER000 = 20 Internal dial tone time 20 seconds
8/13/2019 VoiceMail Server CE Manual
12/2510
Group Arrangements
Group arrangements are optional and depend on how the server is used: use group properties
type number 16.
Facility Class Marks
Facility class mark 11 'Preferent to operator' must be assigned; this is useful when server
transfer incoming calls to operator.
Traffic Class
The traffic class of the server DNRs must be set to maximum: usually traffic class 6.
Signalling Type for ALC
The ALC circuit(s) to which the server is connected must be projected with signalling type
3208 'Enquiry by hook-flash'.
NETIMER006 = 40 Tone limit time 40 seconds
NETIMER041 = 40 DDI tone time 40 seconds
OM COMMANDS FUNCTIONS
ASINTN:0, *590, 0, 76; Message-waiting LED on/off type: 0 = ON
ASINTN:0, #590, 0, 79; 0 = OFF
ASINTN:0, *591, 0, 77; 1 = ON
ASINTN:0, #591, 0, 80; 1 = OFF
ASINTN:0, *592, 0, 78; 2 = ON
ASINTN:0, #592, 0, 81; 2 = OFF
OM COMMANDS FUNCTION
ASFACM:4&11&32&33, server DNR/BSP-IDs Assigns facilities to server DNRs
4 = Data protection
11 = Preferent to operator
32 = Keytone postdialling allowed
33 = Voice-mail server
PG2 PARAMETERS FUNCTION VALUE SELECTED
8/13/2019 VoiceMail Server CE Manual
13/2511
5. SOFTWARE INSTALLATION (OFF-HOOKPROTOCOL)
5.1. INTEGRATED CONNECTION
The things that must be projected are:
- System Boundaries and System Options;
- System Timers;
- System Ring Rhythms (TMS);
- Number Analysis;
- Group Arrangements;
- Facility Class Marks;- Message Waiting;
- Traffic Class;
- Signalling type for the ALC.
5.1.1. System Software 205/300
System Boundaries and System Options
System Timers
SSW PE COMMANDS FUNCTION
205/300 PROJPA:2039, 1; OFF-HOOK Voice-mailprotocol
: ON
PROJPA:2032, 1; Post-dialling available : YES
SSW PE COMMANDS FUNCTION
PROJPA:2308, C40; Tone Time Limit = 40 seconds
205 PROJPA:2341, C40; DDI Tone Time Limit = 40 seconds
PROJPA:2300, C20; Dial Tone Time Limit = 20 seconds
PROJPA:2394, C05; TMS Ringing time "A" = 5 seconds of soft ring
PROJPA:2308, 0, 40; Tone Time Limit = 40 seconds
300 PROJPA:2341, 0, 40; DDI Tone Time Limit = 40 seconds
PROJPA:2300, 0, 20; Dial Tone Time Limit = 20 seconds
PROJPA:2394, 0, 05; TMS Ringing time "A" = 5 seconds of soft ring
8/13/2019 VoiceMail Server CE Manual
14/2512
System Ring Rhythms (TMS)
Number Analysis
The numbers chosen as prefixes are examples only.
Group Arrangements
Group arrangements are optional and depend on how the server is used.
Facility Class Marks
Facility class mark 47 'Preferent to operator' must be assigned; this is useful when server
tranfers incoming calls to operator.
PE COMMANDS FUNCTIONPROJPA:2437,, 58; TMS Ringing rhythm "A" = 60 ms ON
800 ms OFF
PE COMMANDS FUNCTION
PROJPA:6095, 00, *590,, 085; Set message waiting prefix
PROJPA:6095, 00, #590,, 086; Cancel message waiting prefix
PROJPA:6095, 00, *591,, 085; Set message waiting prefix
PROJPA:6095, 00, #591,, 086; Cancel message waiting prefix
PROJPA:6095, 00, *592,, 085; Set message waiting prefix
PROJPA:6095, 00, #592,, 086; Cancel message waiting prefix
OM COMMANDS FUNCTION
CRGRPA:2000, group DNR,,,; Create group arrangement
OM COMMANDS FUNCTION
ASFACM:29&47&51&72,server DNRs; Assigns facilities to server DNRs
29 = Data protected
47 = Preferent to operator
51 = Test call entitled
72 = Post dialling allowed
94 = Voice-mail server (preferred for new installations)
8/13/2019 VoiceMail Server CE Manual
15/2513
Message Waiting
Traffic Class
The traffic class of the server DNRs must be set to maximum: usually traffic class 6.
Note: When the server is dialled via inter-ISPBX links (for example, DPNSS, CLC, tie-
lines, it might be useful to set the route option to "keytone regeneration" (PE5057). If this were done then it would allow users, with extension sets such as
SOPHO-SET P171, K365, to postdial to the server.
5.1.2. System Software 730/735/740/741/800/805/Call@Net
The ISPBX must be projected as follows (the prefixes shown are examples only):
Boundaries, Options and Timers
Number Analysis
OM COMMANDS FUNCTIONCHMWRE:0, *590, #590; Set/cancel message-waiting type: 0
CHMWRE:1, *591, #591; 1
CHMWRE:2, *592, #592; 2
PG2 PARAMETERS FUNCTION VALUE SELECTED
LOSYSOP019 = YES Voice-mail protocol selection Off-hook protocol
LOSYSOP027 = YES Message-waiting queuing softring yes
LOSYSOP047 = YES Postdialling available yes
NETIMER000 = 20 Internal dial tone time 20 seconds
NETIMER006 = 40 Tone limit time 40 seconds
NETIMER041 = 40 DDI tone time 40 seconds
NETIMER165 = 30(only for SSW 730)
POM DTAP inform guard time 30 seconds
OM COMMANDS FUNCTION
ASINTN:0, *590, 0, 76; Message-waiting LED on/off type: 0 = ON
ASINTN:0, #590, 0, 79; 0 = OFF
ASINTN:0, *591, 0, 77; 1 = ON
8/13/2019 VoiceMail Server CE Manual
16/2514
Group Arrangements
Group arrangements are optional and depend on how the server is used: use group properties
type number 16.
Facility Class Marks
Facility class mark 11 'Preferent to operator' must be assigned; this is useful when server
transfers incoming calls to operator.
Traffic Class
The traffic class of the server DNRs must be set to maximum: usually traffic class 6.
Signalling Type for ALC
The ALC circuit(s) to which the server is connected must be projected with signalling type
3208 'Enquiry by hook-flash.'
ASINTN:0, #591, 0, 80; 1 = OFF
ASINTN:0, *592, 0, 78; 2 = ON
ASINTN:0, #592, 0, 81; 2 = OFF
OM COMMANDS FUNCTION
ASFACM:4&11&32&33,server DNR/BSP-IDs Assigns facilities to server DNRs
4 = Data protection
11 = Preferent to operator
32 = Keytone postdialling allowed
33 = Voice-mail server
OM COMMANDS FUNCTION
8/13/2019 VoiceMail Server CE Manual
17/2515
A . ON-HOOK PROTOCOL
Communication between an ISPBX and a server uses CCITT Q.23 DTMF signalling. This
appendix tells you:
- the format of the information the ISPBX sends to a server;
- the errors that might occur in the information sent to a server;
- how a server is expected to react when errors occur;
- how a server is expected to identify the type of a call that it receives.
A.1. CALLS FROM AN ISPBX TO A SERVER
A.1.1. Format of Calls
Figure A.1. shows the information sent from the ISPBX to the server when the ISPBX is setting
up a call. In the figure you see, as an example, a string of digits and letters (D 123456 A 654321
C DC), followed by ringing current (see note 5).
Figure A-1 ISPBX to Server Call Setup Sequence
Note: The digits shown are only an example of what a calling DNR might be.
- With internal calls this field contains up to 6 decimal digits (0...9),
representing the DNR of the calling party or operator. Look also at sectionA.1.3. "Server Recovery from User Dialling Errors".
- With external calls this field contains 4 stars (****).
Note: ISPBXs with SSW 200/205/300 and TBX will send the identifier digit and called
number only on diversion, or when the called number was a hunt group number. If
the server extension number was dialled directly, the identifier and called number
will be suppressed.
The digits shown are only an example of what a called DNR might be.
8/13/2019 VoiceMail Server CE Manual
18/2516
- With non-diverted calls, this field contains up to 6 decimal digits (0 ... 9),
representing the DNR of the server. Look also at section A.1.3. "Server
Recovery from User Dialling Errors".
- With diverted calls, this field contains up to 6 decimal digits (0 ... 9),
representing the DNR of the diversion initiator.
Note: At the end of a voice-mail call, when the caller and called party both go on-hook,
the ISPBX and TBX send a clear display sequence ("DC") to the server ("DC" is sent
to the server by SSW 200/205/300/640, "DC" is not sent by SSW 730/735/740/
741/800/805 and up).
Ringing current is sent to the server after the setup data has been sent.
A.1.2. Timing of Calls
The ISPBX sends the calling number and the called number to the server in a DTMF string,
followed by ringing current; see figure A.1. After the data (calling number and called number)
is received, the server expects to receive ringing current within a specified time (specified in
the server).
If ringing does not start within this specified time the data received is discarded.
A.1.3. Server Recovery from User Dialling Errors
The "Calling Number" and "Called Number" fields in figure A.1. can have a maximum of 6characters in them: look at the notes 1 and 3 above. Nevertheless, a user might dial the wrong
number of digits, or a digit that is not allowed; this section tells you what the server equipment
is expected to do in such cases.
Table A-1 User Dialling Errors and Server Action
USER DIALLING ERROR SERVER ACTION
CALLING NUMBER CALLED NUMBER
More than six digits sent to server Correct (no error) Calling number discarded
Called number retained
Correct (no error) More than six digits sent to server Called number discarded
Called number discarded
Correct (no error) Contains * or # Caller prompted to supply
mailbox number
Contains * or # (**** is allowed) Correct (no error) Calling number discarded
Number contains error Number contains error System reverts to "standardconnection" for that call, rather than"integrated connection".
8/13/2019 VoiceMail Server CE Manual
19/2517
A.1.4. Call Type Identification
Table A.2. shows the types of call that a server might receive from an ISPBX. The server
should recognise these.
Table A-2 Server Type of Call Identification
TYPE OF CALL CALLING NUMBER IS ****
CALLED NUMBER IS SERVERDNR OR SERVER HUNT GROUP
DNR
Direct internal call NO YES
Diverted internal call NO NO
Direct external call YES YES
Diverted external call YES NO
8/13/2019 VoiceMail Server CE Manual
20/2518
B . OFF-HOOK PROTOCOL
Communication between an ISPBX and a Server uses CCITT Q.23 DTMF signalling. This
appendix tells you the format and timing of the information the ISPBX sends to a server.
B.1. CALLS FROM AN ISPBX TO A SERVER
B.1.1. Format of Calls
Figure B.1. shows the information sent from the ISPBX to the server when the ISPBX is setting
up a call. In the figure you see, as an example, a string of digits and letters (X Y 123456 A
654321 C). The caller hears ringing tone while the ISPBX is sending digits, as shown in figure
B.1.
Figure B-1 ISPBX to Server Call Setup Sequence
Note: 1. X = 0: no diversion
1: diversion on busy
2: diversion on no reply
3: other diversion cause (e.g. follow me)
4: diversion on not reachable (empty S0 bus or handset out of reach/switched off)
2. Y = 0: external party, identified by route number (analogue trunk)
1: internal party or party connected to a local network via DPNSS or CLC2: external party, identified by calling line identity (ISDN)
3. The digits shown are only an example of what a calling DNR might be. Look at
table B.1. to see what the digits mean.
4. ISPBXs with SSW 205/300 will send the identifier digit and called number only
on diversion, or when the called number was a hunt group number. If the server
extension number was dialled directly, the identifier and called number will be
suppressed.
8/13/2019 VoiceMail Server CE Manual
21/2519
As from SSW 300.32: when facility class mark 50 is assigned SS to the voice mail
server, the Called Line Identity (preceeded by A) is included in the digit string that
is sent to the voice mail server after answering the call.
5.
- Diverted calls: up to 20 digits (0 ... 9, *, #) DNR of the diversion initiator.
- Non-diverted calls: up to 20 digits (0 ... 9, *, #) DNR of the server.
Note: 6. When the server has received the stop digit it must wait 1 second before sending
an announcement; this time is needed for path switching in the ISPBX.
Table B-1 Meaning of Digits in Calling DNR
B.1.2. Timing of Calls
ISPBXs send the calling number and the called number to the server in a DTMF string; while
this is happening, the user hears ringing tone (see figure B.1.). After the data (calling number
and called number) is sent, the ISPBX connects the caller to the server.
CALLING PARTYTYPE see note 2
MAX. NBR OFDIGITS AND
SPACES TYPE OF DIGITSNUMBER
REPRESENTS REMARKS
Y = 0 20 0 ... 9, * Route number of trunkline. Line number of
trunk line.
Format = ROUTE *LINE (Two numbersseparated by *)
Y = 1 20 0 ... 9, *, # DNR of the callingextension or operator.
Y = 2 20 0 ... 9, *, # Unrestricted calling lineidentity of the callingparty.
If the calling line identityis restricted (SSW 205/300 or SSW 740 andhigher) the route and linenumber are displayedinstead of the calling lineidentity.
8/13/2019 VoiceMail Server CE Manual
22/2520
C . TONES AND SIGNAL LEVELS
The signal levels of the the server and the ISPBX both have to be programmed correctly in
order for the two to interface properly; this means the following should be programmed:
- Audio levels;
- DTMF signalling levels.
Look at table on page 20to see what these levels should be: they are the same for both the
on-hook protocol and the off-hook protocol.
Table C-1 Audio and DTMF Signal Levels
Note: The Audio and DTMF signal levels are specified across an a/b wire pair with an
input impedance of 600 ohms.
C.1. THE SERVER
The Programming of tones and signal levels in the server should already have been done bythe manufacturer of the server; these settings have been chosen to suit the telephone system
requirements of the country in which the server is used; If you need to change the settings
look in the server manufacturer's handbook to see how to do this.
C.2. THE ISPBX
Transmit and receive signal levels of an ALC are country dependent. These signal levels and
DTMF tones are defined in the ALC card being used.
SIGNAL DIRECTION
AUDIO (SPEECH)
SIGNALS
DTMF SIGNALLING LEVELS
LOW GROUP HIGH GROUP
Transmit : Server to ISPBX - 6 to - 12 V - 11 to - 2 dbm - 9 to - 2 dbm
Receive : ISPBX to Server 0 to - 50 V - 5 to - 35 dbm - 5 to - 35 dbm
8/13/2019 VoiceMail Server CE Manual
23/2521
D . EXTRA INFORMATION
D.1. CALLS FROM A SERVER TO AN ISPBX
A server often supports several kinds of messages, such as:
- Standard messages;
- Priority messages;
- Fax messages.
These can be classed as different message waiting types, for example:
- text message 1;- text message 2;
- text message 3.
In an ISPBX, each of these can have a message-waiting activation and deactivation prefix.
When a message is received in a mailbox of the server, the server may initiate a call to the
ISPBX telling it there is a message waiting. The server will tell the ISPBX to turn on the
message waiting indicator (usually an LED or soft ring) on a particular telephone extension and
will indicate what type of message is waiting (with simple sets, only one message type can be
indicated, because the set may have only one lamp or soft ring). The following examples show
how a standard message-waiting indication would be turned on or off.
Turn the standard message waiting indication ON
- Connect to a line;
- Detect dial tone;
- Send the message waiting activation prefix: you defined this (*590) in the number
analysis section of chapters 4 and 5)
- send the DNR of the telephone set;
- Wait for confirmation tone;
- Disconnect.
Turn the standard message waiting indication OFF
- Connect to a line;
- Detect dial tone;
- Send the message waiting deactivation prefix: you defined this (#590) in the number
analysis section of chapters 4 and 5)
- Send the DNR of the telephone set;
- Wait for confirmation tone;
- Disconnect.
8/13/2019 VoiceMail Server CE Manual
24/2522
Note: The DNR is the extension number of the user whose message waiting indicator is
to be changed.
DNRs in other DPNSS nodes are allowed (only in SSW 805)
The DNR may contain up to:
6 digits (0 ... 9) (On-hook protocol)
12 digits (0 ... 9, *, #) (Off-hook protocol)
D.1.1. Timing of Calls
When the server connects to a line it expects to receive dial tone within a certain period of
time; if no dial tone is detected within this period the server disconnects.
On receiving dial tone, the server will send a string of DTMF digits to the ISPBX and wait for
confirmation tone, if no confirmation tone is received within a certain time then the server will
disconnect. The tone and timeout value of the confirmation tone are projectable within theISPBX and must also be projectable within the server.
If the call from the server to the ISPBX fails it might be because dial tone or confirmation tone
are not detected, or the timeouts are exceeded. In this situation the server will make another
two attempts to establish a connection. If these two also fail, the server will make no further
attempts. The maximum number of call setup attempts will therefore be three. Look at figure
D.1. for an indication of the call setup protocol.
Figure D-1 Server to ISPBX Call Setup Sequence (Server Actions)
D.1.2. Call Collision
If the server seizes a line in order to make a call to the ISPBX but receives a keytone digit
instead of dial tone, then it is obvious that an incoming call is colliding with the outgoing call;call collision is occurring.
When call collision occurs, the server should withdraw its outgoing call to the ISPBX and give
precedence to the incoming call from the ISPBX.
It is recommended that the server should wait a few seconds after the last call is finished
(incoming or outgoing), before it sets up any new call to the ISPBX. This should avoid collisions
with new incoming calls, from the ISPBX to the server, that had been waiting as "camped on
busy" calls.
8/13/2019 VoiceMail Server CE Manual
25/25
D.2. MESSAGE WAITING TYPES
The three message waiting types mentioned in section D.1. can be indicated only on feature
telephone sets. On simple sets only one message waiting type can be indicated because thesimple set has only one lamp or soft ring.
This means that, on a simple set, only one message waiting type should be used because
switching other message waiting types off on simple sets will result in switching off all message
waiting types.
If all three message waiting types are to be used, the server must know the types of sets in an
installation and which of the telephone sets are simple sets.