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Telephone Systems

BT TSX50 / Mitel SX50 Telephone System

The TSX50 is an integrated communications system which uses an innovative modular design. Up to 10 peripheral circuit cards can be plugged in or taken out without upsetting the system. This allows easy system expansion, fault finding and card replacement. The TSX50 is a compact digital electronic system using stored program control and advanced digital architecture.

 

The TSX 50 can simultaneously use tone, pulse dial or TX14 feature phones. It can cater for up to 160 extensions, 32 exchange lines (trunks), 24 private circuits and has its own console. It has features such as call information logging, automatic route selection, extension metering, direct inward access, direct outward dialling, emergency switching, pick-up groups, baby monitoring, and remote access.

 

The TSX50 was first launched in June 1986 with the version UK1 which had G3543/02 software. In July 1989 the UK2 version was released with G3543/03 software. The final version UK3 was released in April 1990 with G3546/01 software. See the table below which explains the differences. The TSX50 had two types of power supply. Earlier versions had the 1A power supply fitted which had an output of 140W, whilst later versions had the higher rated 2A with an output of 225W. See below for the maximum capacity for each type.

System Capacity
Hardware PSU 1A/G3543 PSU 2A/G3546
MF4 Receivers 5 5
Extensions 80 (5 cards) 160 (10 cards)
TX14’s 32 (4 cards) 32 (4 cards)
Operator’s console 1 1
Exchange Lines 24 (3 cards) 32 (4 cards)
Mothercards (universal) 4 6
DC5A Private Circuits 8 12
AC15A Private Circuits 8 24
Peripheral card slots 10 10
Trunk Groups 6 10
Trunks per group 24 32

 

Key differences between generic software G3543 & G3546
Feature G3543 G3546
Abbreviated dialling 60 90/500
Abb. dials saved with data dump no yes
Account Codes no yes
Automatic Route Selection (ARS) no yes
Baby Monitor no yes
Behind PBX working no yes
Conflict dialling no yes
DISA code 159 000
Discriminatory barring yes no (use ARS)
Priority dial 0 no yes
Private Circuit default COS 0 1 (no COS 0)
Reminder calls can be set by extension no yes
Remote maintenance no yes
Trunks default COS 0 1 (no COS 0)
TX14 advisory messages no yes
TX14 name program/display no yes
TX14 console no yes

 

BT Meridian Telephone Systems

BT Meridian 8×24 Telephone System

The Meridian Norstar M8X24 modular Telephone System was designed to meet the high growth potential of small and medium sized businesses. The basic Meridian 8X24 Telephone System offers eight trunks and sixteen digital extensions. This can easily be expanded by the addition of simple self contained add-on trunk and extension modules. Any combination of six modules can be added to the Meridian Norstar 824 Telephone System to a combined maximum total of 128 ports.

An expansion card is required to add modules to the Meridian Norstar 824 Telephone System. Expansion cards are available as either a 2 module expansion card or a 6 module expansion card. The expansion card plugs directly into the Meridian Norstar 824 Telephone System. The trunk and extension modules then connect to the expansion card via a single plug in fibre optic cable.

Extension module M0X16 provides for the addition of 16 digital extension ports for system telephones. Extension module M0X8A provides for the addition of 8 analogue extension ports, a second unit can be added to the first to provide 16 ports. The M12X0 trunk (line) module provides for up to a further 12 trunk ports. The trunk module contains three slots to plug in 4X0 trunk cards, each trunk card provides four trunks (lines).

Meridian system telephones are plugged into a secondary LJU wired to pins 3 & 4 (blue/white & white/blue).

System Capacity

Trunk Modules Trunk Cards Station (Extension) Modules
None One Two Three Four Five Six
None 0 8 24 8 40 8 56 8 72 8 88 8 104 8 120
One 1 12 24 12 40 12 56 12 72 12 88 12 104
2 16 24 16 40 16 56 16 72 16 88 16 104
3 20 24 20 40 20 56 20 72 20 88 20 104
Two 4 24 24 24 40 24 56 24 72 24 88
5 28 24 28 40 28 56 28 72 28 88
6 32 24 32 40 32 56 32 72 32 88
Three 7 36 24 36 40 36 56 36 72
8 40 24 40 40 40 56 40 72
9 44 24 44 40 44 56 44 72
Four 10 48 24 48 40 48 56
11 52 24 52 40 52 56
12 56 24 56 40 56 56
Five 13 60 24 60 40
14 64 24 64 40
15 68 24 68 40
Six 16 72 24
17 76 24
18 80 24
The number of available trunk lines are shown in blue
The number of available extensions are shown in red

Meridian 8×24 System, Modules & Cartridges

M8x24 CCU 30A

M8x24 CCU 30A

Part No: NT7B51AA. Item code: 376358
M8x24 CCU 30A

M8x24 CCU 30A

Part No: NT7B51AA. Item code: 376358
Software cartridge CTG30B

Software cartridge CTG30B

Part No: NT7B70AC. Item code: 376841
Data cartridge 30A

Data cartridge 30A

Part No: NT7B66AA. Item code: 376357
2-port expansion cartridge 30A

2-port expansion cartridge 30A

Part No: NTBB01AA. Item code: 376359
M12x0 Trunk module

M12x0 Trunk module

Part No: NTBB20AA. Item code: 376362
M12x0 Trunk module

M12x0 Trunk module

Part No: NTBB20AA. Item code: 376362
Trunk cartridge

Trunk cartridge

Part No: NTBB30AD. Item code: 376361
Trunk cartridge

Trunk cartridge

Part No: NTBB30AD. Item code: 376361
M0x16 System extension module 32A

M0x16 System extension module 32A

Part No: NTBB41AA. Item code: 376361
M0x16 System extension module 32A

M0x16 System extension module 32A

Part No: NTBB41AA. Item code: 376361
M0x8A System extension module

M0x8A System extension module

Part No: NTBB51AC. Item code: 102460
M0x8A System extension module

M0x8A System extension module

Part No: NTBB51AC. Item code: 102460
2-port expansion cartridge 30A

2-port expansion cartridge 30A

Part No: NTBB01AA. Item code: 376359

Meridian Norstar – Changing the system time

  To change the system time on the Norstar Meridian:
  1.  Place the programming overlay on any M7208, M7310 or M7324
  2.  Press FEATURE * * A D M I N (2 3 6 4 6), the display reads Password:
  3.  Enter the Admin password, the default is A D M I N (2 3 6 4 6),
the display reads 1. Sys speed dial
  4.  Press NEXT until the display reads 3. Time and date
  5.  Press SHOW, the display reads Time
  6.  Press CHANGE, the display reads Hour:
  7.  Press CHANGE
  8.  Enter the hour in two-digit format for the 12 or 24 hour clocks
  9.  Press NEXT the display reads Minutes
  10. Press CHANGE
  11. Enter the minutes
  12. Press NEXT
  13. If you have entered an hour less than 12, the display reads AM or PM.
If not, skip to step 15.
14. Press CHANGE to toggle between AM and PM
15. Press RLS to exit

Meridian Norstar Feature Codes

Feature Function Explanation
Feature * 0 Key Inquiry Show what is programmed to a key [button]
Feature * 1 Programme outside speed dial to a key Programme an outside number to a key:
Feature * 1

press required key then dial outside number
Feature * 2 Programme internal extension number to a key Programme an extension number to a key:
Feature * 2

press required key then dial extension number
Feature * 3 Programme a function to a key Programme feature to a key:
Feature * 3
Press required key then dial feature code [e.g. last number re-dial Feature 5 ]
Feature * 4 Programme a personal speed dial Press Feature  * 4
Press a two digit code  71 – 94 dial telephone number required.
Insert 9 / line access code at the front of number if required
Press hold when finished
Feature  * 6 Set Ring Type Programme ring type & volume:
press Feature  * 6
press 1  2  3  4  to choose ring type, use the volume bar to set ring volume
Feature * 7 Adjust LCD contrast Press Feature * 7 and 
1 – 9 
 or up / down
Feature * 8 0 Set Ring Volume Press Feature  * 8 0
phone starts ringing
use the volume bar to set ring volume
press Rls
Feature * 8 1 Move Line Keys 1. Press Feature  * 8 1.
2. Press the 
line key  you want to move.
3. Press the 
line key  you want to assign.
4. Press 
Rls.
The functions of the keys are now exchanged. Line keys cannot be exchanged with intercom or handsfree/mute  keys.
Feature * 82 Set dialling mode There are three settings:
1. Automatic dial – this is the normal setting – hot dial pad: dial a number without picking up handset or pressing a line key.
2. Standard dial – press a line key, then dial the number.
3. Pre – dial – dial a number, then press a line key to start the call dialling.
Feature  * 8 9  Programmed Release  When used at the end of a speed dial digit string this feature acts as the Rls key
Feature  * 9 Run / Stop  Refer to system manager
Feature  [ 71 – 94 ] Use a personal speed dial To dial: press Feature  0  and a two digit code  71 –  94
These speed dials are available at your phone only and you programme them with Feature  * 4
Feature  [ 01 – 70 ] Use a central speed dial To dial: press Feature  0  and a two digit code  01 – 70
These speed dials are available at all phones (subject to call barring) and are programmed by the system manager
Feature  1 Send Message Send a message to an extension that they are to call you:
1. Press 
Feature  6 5 or MSG to view messages.
2. Press 
* or next  to view message list.
3. Press 
0  or call  to call the person who left a message.
4. Press 
hold  or erase (whilst viewing a message) to erase a message.
Feature  # 1 Cancel a Message Cancel a message
Feature  2 Ring Again When an extension is busy or not answered you can tell the system to call again when the party is available you can use this feature to ‘book’ a free line
Feature 3 Conference 1. Make or take a call.
2. Put the first call on hold.
3. Make or take a second call.
4. Press 
Feature  or conf/trans.
5. Press the line key of the first held call.
6. To end the conference press 
Rls
Feature 4 Call Forward to another extn Send your calls to another extension
Feature # 4 Cancel Call Forward to another extn
Feature  5 Last Number Redial Redial of the last external number dialled
Feature  6 0 Page General Page general:
Press  Feature  6 0
Press code:
  1 = Extensions
 2 = External PA speakers
3 = Both
Press zone 2 or 3 (0 = all zones)
Feature  6 1 Page to internal zone Page internal – to all extensions:
Press  Feature  6 1  
Press zone 2 or 3 (0 = all zones)
Feature  6 2 Page external Page external to external pa speakers:
Press  Feature  6 2
Press zone 2 or 3 (0 = all zones)
Feature 6 3 Page to internal zone & external Page external to external pa speakers & internal to extensions:
Press  Feature  6 3
Press zone 2 or 3 (0 = all zones)
Feature  6 4 Line Pool Access To use a line pool:
Press  Feature  6 4 or  intercom
then dial line pool code [eg 9].
To programme a line pool key:  Feature  *3 then 
key 
then
Feature  6 4 [code e.g. 9]
Line pools are normally accessed by dialling 9 or 8 or have a key assigned to them
Feature  6 5 Reply to a message See Message
Feature  6 6 Voice Call to an extension Speak direct to an extension without ringing:
Press Feature  6 6
Dial extension number then start speaking
Feature  6 7 Saved Number Redial You have dialled an external number and are connected:
Press  Feature  6 7
– the number is now stored.
You can dial this saved number by  pressing  Feature  6 7
Feature  6 8 Restriction passwords / bypass call restrictions Bypass call restrictions applied to your telephone:
Feature 
 6 8 password
Feature  6 9 Priority Call Interrupt a person on a call or using do not disturb
feature 7 0  Transfer Transfer a call to another extension:
1. You are on a call.
2. Press Transfer or feature 7 0
3. Dial extension number.
4. Extension answers, announce call.
5. Press or  Rls to ok  connect call.
If the extension does not want call or does not answer press cancel
Feature 7 1 Flash / Recall Generate a flash / recall signal to your host PBX
72 Timed Release
Feature 7 4 Call Park Puts a call on hold (terminal shows a retrieval code of 101 or 102) and is available for retrieval from any extension dialling the retrieval code
Intercom 101 or Intercom 102 Call Park Retrieval Collect a parked call
Feature 7 5 Pickup Answer a call ringing at another extension (extension must be in your pickup group, the call that has been awaiting answer the longest is answered first).
Feature 7 7 Call Timer Shows duration of current / last call
Feature 7 8 Pause DTMF: inserts a 3.5 second delay in digit string
Feature 7 9
or
Feature  Hold
Exclusive Hold Temporarily suspend a call – only your telephone can retrieve it to retrieve: press Hold or line key
Feature 8 3 Privacy ON Allow a telephone that shares your line to join your call (auto switch off on end of call)
Feature # 8 3 Privacy OFF 
Feature 8 4 Exchange Line redirect ON Calls on one or more exchange lines are sent elsewhere (outside of the system).
Feature # 8 4 Exchange Line redirect OFF
Feature  8 5 Do Not Disturb On Prevents any calls ringing at your extension
Feature  # 8 5 Do Not Disturb Off
Feature 8 6 Background Music On If music is available on your system
Feature # 8 6 Background Music Off
Feature  8 7 Service Modes  e.g. Night Service
Feature  8 8 Voice Call Deny On prevent your extension from receiving voice calls
Feature  # 8 8 Voice Call Deny Off
Feature  8 0 0 Trunk Answer  Pick up a ringing external call that is ringing in a service mode
Feature  8 0 2 Group Listen ON

Use the speaker and the handset at the same time for others to hear the call.
* Not available for headset users.
* May cause feedback

Feature  # 8 0 2 Group Listen OFF
Feature  8 0 3 Time  To see the time whilst on a call: Press Feature  8 0 3
Feature  8 0 8 Long Tones

Makes tones on key pad last as long as the key is held

Hold Hold a Call Temporarily place a call on hold:
To retrieve: press 
Hold or line key
Transfer  Transfer Transfer a call to another extension: 1. You are on a call.
2. Press Transfer or feature 7 0
3. Dial extension number.
4. Extension answers, announce call.
5. Press Rls or ok to connect call.
If the extension does not want the call or does not answer press cancel