Mike's PBX Cookbook

Maintenance Telephone

Access through a maintenance telephone

A telephone can perform basic maintenance when you assign it class-of-service MTA (maintenance telephone allowed) in LD 11.

To enter commands, press the keys that correspond to the letters and numbers of the command.

For example, to enter 'LD 42 <return>', key in '53#42##'

The following overlays (LDs) ARE accessible from a maintenance telephone:

30, 32, 33, 34, 36, 37, 38 42, 43, 45, 46, 60, 61, 62

The following overlays (LDs) ARE NOT accessible from a maintenance telephone:

31, 40, 48, 77, 80, 92, 96, 135, 137


Keyboard / Dial pad translation, and procedure:

  1. Press the telephones prime DN key.
  2. Place the set in maintenance mode by entering: SPRE+91
    The SPRE number is typically "1", so you would enter: 191
  3. Check for busy tone by entering <return>: ##
    • If there is no busy tone, go to Step 4.
    • If there is a busy tone, a program is active.
    • To end an active program and access the system enter: ****
  4. Load a program by entering : 53#xx##
    Where : xx represents the number of the overlay program (LD)
  5. Perform tasks: spell out commands on the keypad, # for space, ## for enter
  6. To exit the program and return the telephone to normal mode, enter: ****
1 2
ABC
3
DEF
4
GHI
5
JKL
6
MNO
7
PRS
8
TUV
9
WXY
*
0
#
Space

  Space: #  Return: ##
Exit: ****

Examples...

Using a Maintenance Telephone (CLS needs MTA)...
Spell out commands on the keypad, # for space, ## for enter.

1. Test Trunks:

Direct trunk access by TN. TTY's must be logged off.

191##Log in (no password)
53#36##Load overlay program 36
875#l#s#c#u##(TRK) Test a specific analog trunk (loop, shelf, card, unit)
875#l#c##(TRK) Test a specific digital trunk (loop, channel)
Dial a numberPress * to hang up, Press # to redial
****Log out

2. Test Tones:

Refer to LD 34 for different Tone commands.

191##Log in (no password)
53#34##Load overlay program 34
279#0##Tests busy tone from the TDS card on loop 0 (test any TDS loop)
2##Drops the tone being tested and allows you to test another tone
683#16##Tests overflow tone from the TDS card on loop 16
****Log out

3. Reset a TTY terminal:

May revive a locked-up TTY, otherwise, press INI.

191##Log in (no password)
53#37##Load overlay program 37
365#889#1##(ENL TTY) resets and enables TTY 1
****Log out

4. Database Save:

191##Log in (no password)
53#43##Load overlay program 43
333##(EDD) - a data save is performed
****Log out

Accessing Meridian Mail

Option 11C allows access to Meridian Mail Administration & Maintenance through a shared terminal on the Option 11C. To access the Meridian Mail system, log in and enter: AX. To exit from Meridian Mail, press the Control key and the closed square bracket ( ] ) simultaneously. This might be useful if the TTY has locked up.