Abstract: A modem includes a dynamic host configuration protocol (DHCP) module, a point-to-point protocol over Ethernet (PPPoE) module, and a network monitor module. The DHCP module automatically establishes a DHCP connection over a communication network, and generates a first notification signal after the DHCP connection is established. The PPPoE module automatically establishes a PPPoE connection over the communication network and automatically configures parameters of an Internet access service over the communication network and generates a second notification signal after the PPPoE connection is established. The network monitor module determines current network properties of the communication network upon receipt of the first notification signal and/or the second notification signal, and selectively configures parameters of the Internet access service and a voice over Internet protocol (VoIP) service.

Abstract: A broadband filter filtering noise over a first conductive wire, a second conductive wire, and a third conductive wire includes a differential-mode filtering circuit connected to both the first conductive wire and the second conductive wire and a common-mode filtering circuit connected to both the first conductive wire and the second conductive wire. The differential-mode filtering circuit includes two inductors and two capacitors for filtering differential-mode noise of different frequencies. The common-mode filtering circuit includes two inductors and six capacitors filtering common-mode noise of different frequencies.

Abstract: A mobile phone has a cover with a first bearing extending parallel with the cover, a body with a second bearing at a corner thereof and extending perpendicular thereto, and a hinge rotationally coupling the cover and the body. The hinge includes a crankshaft that has a transverse shaft and a vertical shaft extending perpendicularly from an end of the transverse shaft, a first cam assembly disposed on the transverse shaft, and a second cam assembly disposed on the vertical shaft. The first cam assembly together with the transverse shaft is retained by the first bearing to enable the cover to be rotatable relative to the body about a transverse axis. The second cam assembly together with the vertical shaft is retained by the second bearing to enable the cover to be rotatable relative to the body about a vertical axis.

Abstract: A mobile phone has a cover, a body and a hinge. The cover has a first bearing with a first cavity. The body has a second bearing with a second cavity and a locking plate at two opposite corners thereof. The hinge includes a transverse shaft being inserted in the first cavity, a vertical shaft extending perpendicularly from one end of the transverse shaft and being inserted in the second cavity, and a locking mechanism being inserted in the first cavity and fixed on the other end of the transverse shaft. The locking mechanism can lock with the locking plate to make the cover be stacked on the body stably. Furthermore, the cover can be firstly rotated vertically 180 degrees about the transverse shaft and then rotated horizontally 180 degrees about the axis of the vertical shaft to make the cover and the body be arranged side by side.

Abstract: A method for stabilizing a connection between an xDSL modem (160) and a central office (120) is provided. The method includes detecting whether a signal on a telephone line is a ring signal; setting a ring signal flag if the signal on the telephone line is the ring signal; and maintaining a connection between the xDSL modem and the central office. An xDSL modem using the method is also provided.

Abstract: A mobile phone has a cover with a first bearing extending parallel with the cover, a body with a second bearing at a corner thereof and extending perpendicular thereto, and a hinge rotationally coupling the cover and the body. The hinge includes a crankshaft that has a transverse shaft and a vertical shaft extending perpendicularly from an end of the transverse shaft, a first cam assembly disposed on the transverse shaft, and a second cam assembly disposed on the vertical shaft. The first cam assembly together with the transverse shaft is retained by the first bearing to enable the cover to be rotatable relative to the body about a transverse axis. The second cam assembly together with the vertical shaft is retained by the second bearing to enable the cover to be rotatable relative to the body about a vertical axis.

Abstract: A mobile phone has a cover, a body and a hinge. The cove has a first bearing with a first cavity. The body has a second bearing with a second cavity and a locking plate at two opposite corners thereof. The hinge includes a transverse shaft being inserted in the first cavity, a vertical shaft extending perpendicularly from one end of the transverse shaft and being inserted in the second cavity, and a locking mechanism being inserted in the first cavity and fixed on the other end of the transverse shaft. The locking mechanism can lock with the locking plate to make the cover be stacked on the body stably. Furthermore, the cover can be firstly rotated vertically 180 degrees about the transverse shaft and then rotated horizontally 180 degrees about the axis of the vertical shaft to make the cover and the body be arranged side by side.