| 54 |
Title |
TI |
[EN] Method and system for supervising an optical network termination unit |
| 71/73 |
Applicant/owner |
PA |
FOERSTER MATTHIAS
;
GERDES JOHANNES
;
ZOTTMANN HARALD
|
| 72 |
Inventor |
IN |
FOERSTER MATTHIAS, DE
;
GERDES JOHANNES, DE
;
ZOTTMANN HARALD, DE
|
| 22/96 |
Application date |
AD |
Feb 5, 2003 |
| 21 |
Application number |
AN |
35903103 |
|
Country of application |
AC |
US |
|
Publication date |
PUB |
Aug 5, 2004 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
|
| 51 |
IPC main class |
ICM |
H04J 14/00
|
| 51 |
IPC secondary class |
ICS |
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
H04B 10/0779
H04J 14/0226
H04J 14/0227
H04J 14/0246
H04J 14/0247
H04J 14/025
H04J 14/0252
H04J 14/0279
H04J 14/0283
|
|
MCD main class |
MCM |
|
|
MCD secondary class |
MCS |
H04B 10/02
(2006.01)
H04B 10/08
(2006.01)
H04J 14/02
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[EN] A method for supervising an optical network termination unit (18) from a remote headend (14) that is connected to the termination unit through a fiber-optical link (20), the termination unit having an optical input side (32) receiving a transmitted signal (Tx) from the headend, and an optical output side (34) transmitting a signal to be received by the headend as a received signal (Rx), the method comprising the steps of: optically coupling said input side to said output side, thereby to form a passive optical loop, passing a loop control signal (LCS) from the headend through said loop, and detecting the loop control signal at the headend. |
| 56 |
Cited documents identified in the search |
CT |
US000003584220A
US000005321541A
US000005408350A
US000005771111A
US000005886803A
US000006414775B1
US000006580535B1
US000006757493B1
US000006850706B2
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
H04J 14/00
|
