Mitel 3000 Installation And Maintenance Manual page 127

Mitel 3000
Installation & Maintenance Manual
Loop Start Lines
There is a delay in ringing
extensions on incoming calls.
SMDR Printout
Dialed digits not showing in
SMDR printout or on system
phone display
External Calls
There is a delay in hearing
ring back when I make an
outbound call.
CO Line Loop Current
Loop or ground start C.O. lines with line current
not within 23 ma and 45 ma.
On some older phones with electromechanical ringers the bell will "tinkle"
when a reversal is sent. So if an extension is programmed with a voice mail
box, or is in a group that has a group box, it may tinkle when the signal to turn
the 'message waiting' indication on or off is sent to it.
The message is sent: -
When a new message is left in a box.
When the indication is being turned off.
It is also sent some seconds after the handset is replaced on every call. This is
to ensure that the message indicator on CID phones are in sync with the voice
mailbox. This may cause the bell to tinkle about 5 seconds after the user goes
on-hook.
If Caller ID is not provided on the lines and the system is programmed to
expect Caller ID, there will be a delay between calls being presented to the
system and the extensions ringing. This is caused by the system trying to detect
the Caller ID signal after the first ring burst. It delays a period of several
seconds trying to detect the Caller ID signal before it rings the extensions. This
delay can be eliminated by reprogramming the lines not to detect caller ID.
If Caller ID is presented on the line, there is a delay as the system detects the
Caller ID information after the first ringing burst and transmits it to the
extensions. The extensions are rung when the Caller ID information has been
decoded and the information can be presented to the extensions. This can cause
a delay of some seconds before the extensions are rung.
This is because the line or lines are incorrectly programmed as "Loop Calling"
lines. Go into programming lines and turn the loop calling off for all lines.
Loop calling should only be used for a ring down circuit / tie line.
If a call is made by dialing 9 and continuing to dial the phone number without waiting
for the CO dial tone, there will be a delay in switching through the speech path after the
call is dialed. This is because the system stores the digits and then resends them once
Telco dial tone is detected. However, the system does not know when the last digit is
dialed so it switches the speech path through if it has not detected a dialed digit for
about 4 seconds.
If this is causing a problem, users should wait after dialing 9 and then continue dialing
the number when they hear the Telco dial tone.
This delay will always be present if they use redial on standard phones.
Contact Mike Sandman Telecom in Chicago
http://www.sandman.com/. They sell attenuators that
replace the bridging clip on a 66 block and the current
is reduced to 25 ma.
They also sell a tester for $35 that every telephone
system tech should have. You can test line loop current
in series with a multimeter, but it is a pain holding the
connections in place (and you have to have a call in
progress as you test). The tester makes it much easier -
122