发明名称 |
Autonomous metallic supervision with sealing current |
摘要 |
A system, method, and computer readable medium for a metallic test method in a digital subscriber line system in which a subscriber's voice service has been switched from plain old telephony service to an inband digital subscriber line data stream characterized in that a direct current loop current used for plain old telephony service is replicated for testing, comprising, providing a sealing line current to a transmission line via a digital subscriber line device serving the subscriber and supervising the provided sealing line current between the digital subscriber line device and a subscriber's premises for determining a connectivity therebetween. |
申请公布号 |
US8879691(B2) |
申请公布日期 |
2014.11.04 |
申请号 |
US200511315514 |
申请日期 |
2005.12.22 |
申请人 |
Alcatel Lucent |
发明人 |
Ploumen Franciscus Maria;Franceschini Paul |
分类号 |
H04M1/24;H04M3/30;H04M11/06;H04M19/00 |
主分类号 |
H04M1/24 |
代理机构 |
RGIP LLC |
代理人 |
RGIP LLC |
主权项 |
1. A method of testing metallic integrity in a dry digital subscriber line system in which a subscriber's voice service has been switched from plain old telephony service to an inband digital subscriber line data stream characterized in that a direct current loop current used for plain old telephony service is replicated for testing, comprising:
providing a sealing line current to a dry transmission line via a dry digital subscriber line device serving the subscriber, the sealing line current provided from a sealing current source coupled to the dry transmission line via a low pass filter, the sealing current source and the low pass filter located in a remote digital subscriber line access multiplexer (DSLAM); supervising the provided sealing line current between the digital subscriber line device and a subscriber's premises for determining the metallic integrity and a connectivity of the dry transmission line, and for determining whether a leakage current is occurring; and measuring a loop resistance of the dry digital subscriber line based on the provided sealing line current to determine the connectivity of the dry transmission line. |
地址 |
Boulogne-Billancourt FR |