LINE DETECTION INFO FOR 1X, 4X, AND PRO SYSTEMS
Note: Durafon 1x does not have line detection. This means it will always go off hook, regardless if there is an active line or not.
Note: Durafon PRO has a unique chip dedicated to detecting an active line or not, so adjusting time in milliseconds to detect the line is not applicable (Only on or off is available).
Note: Typically adjusting line detection or turning it off completely is necessary if you are getting an intermittent “no lines available” message. Changing this setting can improve or eliminate this error. With 4x, it is common to just set detect to “off”, or for 1000ms (the longest and most accurate). It is an issue where a PBX/KEY system does not produce the standard 48VDC on hook line voltage like a standard pstn line.
Why have it at all?
In a stand-alone application, the 4x and PRO may share a line with another phone. This eliminates accidentally accessing those lines, giving a handset an available line every time, and not have to choose a line every time as well.
It isn’t necessary if you are dedicating away all lines to specific DID ports, and could prove better to have this setting off.
Note: Default setting for Durafon 4x is line detection “on”, and 500 milliseconds.
Note: Default setting for Pro is line detection “on”.
Turning Line detection off.
On a 4x handset id10, or 11, press Menu 9, 2, 5 (line detection on/off) then save, then exit.
On a PRO handset id10, or 11, press Menu 9, 1, (base id), then 3 (line detection on/off) then save, then exit.
Adjusting line detection time for 4x.
Using any 4x handset, press menu, *, *, # (menu, star, star, pound). Then press 3 for “line det”. Choose 1 for 270ms, 2 for 500ms, 3 for 800ms, or 4 for 1000ms.
Note, when line detection is “ON", if you press "TALK", the base station will scan the line status automatically, and give you the available line, scanning from L1 to L4 in that order.
When the line detection setting is "OFF", if you press "TALK", the base station will give the handset any line (regardless of it being real or not), except those already in use by another Engenius handset. The order again starts at L1 and continues through L4. This means you will still not have the ability to share a line already in use from another handset accidentally, or intentionally. (Butting in). If that is your intention, you can use our Conference feature, or have another analog phone off the same pstn line.
Daniel Koczwara
2/8/2008
The algorithm of 4X and PRO's LINE DETECTION are different, so there is no suchkind of 500ms or 600ms timing in PRO.
Per you below email, I suppose you are asking the solution for line locked-up issue. But above line detection timing is for "no line available" issue, not suit for locked-up issue. Does the line locked-up occur again?
Actually, the line detection in service manual 2(MENU-->＊＊＃-->3(Line Det) is same thing with service manual 3(MENU --> ＊＃＃＊--> 4(B EEP) --> 005E(Address) --> OK -->LCD shows "FF32"),the only difference is in manual 2, there are only 4 options, but in manual 3, we can adjust it by enter data address.
Adjust if:
1) There are problems with “no lines available”, or no connection repeatedly.
2) Stutter dial tone for voicemail notification is used.
Please followbelow procedures to adjust the base EEPROM value of line detection:
a). MENU --> ＊＃＃＊--> 4(B EEP) --> 005E(Address) --> OK -->LCD shows "FF32"
b). Change the 32 to3C.
c). Test and use this with this configuration. Go longer if the problem is still occurring. (Note, the longer it is, the longer it takes to access a line every time)
d). If still no lines available, then change to "46"(or "50").
Chart
FF13 = 200MS FF1E = 300MS
FF28 = 400MS FF32 = 500MS
FF3C = 600MS FF46 = 700MS
FF50 = 800MS FF5A = 900MS
PS:
1). "32" is the default durationof line detection, when pressing "TALK",the 4X system will detect the line status, see if the line is available or not. Each line will take500ms for detection.
2)."3C" means the duration is 600ms. "46" means the duration is 700ms. "50" means the duration is 800ms.