Abstract: The present application discloses a method for realizing a private call during a conference in an IP multimedia subsystem, which includes the following steps: a service device receives a first request message that is sent by a first communication device to request a private call with a second communication device; if the first communication device is a communication device at the conference presider side, the service device modifies conference media of the communication device having participated in the conference within the first and the second communication devices; and after modifying the conference media, the service device establishes a private call between the first and the second communication devices. The present application also correspondingly discloses a service device for realizing a private call during a conference in an IP multimedia subsystem.

Abstract: A wavelength locking method, apparatus, and system are provided. The wavelength locking method includes modulating, by using scrambling signals with a same frequency and different phases, each one of a plurality of optical channel signals respectively; processing, by a combiner, a splitter, and a wavelength locker, the modulated optical signals, so as to acquire photoelectricity detector (PD) signals; performing phase discrimination on the PD signals to acquire wavelength information of the optical channels; determining different shift values corresponding to the different wavelength information; and adjusting wavelengths of the optical channels according to the corresponding shift values.

Abstract: In the field of photonic integrated communication, a method and an apparatus for filtering locking are provided, so as to solve the problem in the conventional wavelength locking technology that any increase of the wave number also incurs increases in costs and circuit complexity, and it is difficult to extract dithered information. The method and apparatus for filtering locking employ a centralized wavelength locking method of injecting a single dither to a Photonic Integrated Device (PID)/Photonic Integrated Circuit (PIC), thereby reducing circuit board area and control circuit complexity. A weak dither signal can be accurately extracted by means of a combination of analog filtering and digital filtering. The technical solution is appropriate for use in photonic integrated systems in which two or more PID/PIC chips with multi-wavelength modules are cascaded.

Abstract: A method for delivering multimedia messages includes: submitting a multimedia message containing address information of a receiving party to an MMSC by an initiating party; sending a PUSH notification by the MMSC to a short message system with an interface protocol supported by the short message system; obtaining routing information of the receiving party from HLR of the receiving party by the short message system, and sending the PUSH notification to the receiving party according to the routing information; and retrieving the multimedia message from the MMSC according to addressing information of the multimedia message containing in the PUSH notification by the receiving party. The method improves the efficiency and success rate of multimedia message delivery and lowers the cost of multimedia message delivery.

Abstract: The invention discloses a method for forwarding multimedia messages (MMs) between different multimedia messaging service centers (MMSCs), comprising: a) an originator MMSC receiving a MM submitted by an originator terminal, then editing and generating a routing forward request message; b) the originator MMSC sending the routing forward request message generated in step a) to a recipient MMSC; c) the recipient MMSC returning a routing forward response message to the originator MMSC after receiving the routing forward request message; d) the recipient MMSC delivering the MM according to the MM related information contained in the routing forward request message; and e) the recipient MMSC generating a delivery report according to the current delivery status and sending it to the originator MMSC.

Abstract: Disclosed is a method for implementing prepaid MMS under the condition that the SCP in which the prepaid subscribers register can provide both prepaid service and prepaid MMS. The method comprises the following steps: a calling subscriber submitting a multimedia message to a MMSC; the MMSC judging the addresses of the calling subscriber and the called subscriber who will receive the multimedia message to determine user types of the calling subscriber and the called subscriber; and the originator MMSC or the recipient MMSC implementing charge processing and distribution of the multimedia message through sending a charge request message to SCP based on the user types.

Abstract: A method for delivering multimedia messages includes: submitting a multimedia message containing address information of a receiving party to an MMSC by an initiating party; sending a PUSH notification by the MMSC to a short message system with an interface protocol supported by the short message system; obtaining routing information of the receiving party from HLR of the receiving party by the short message system, and sending the PUSH notification to the receiving party according to the routing information; and retrieving the multimedia message from the MMSC according to addressing information of the multimedia message containing in the PUSH notification by the receiving party. The method improves the efficiency and success rate of multimedia message delivery and lowers the cost of multimedia message delivery.

Abstract: Disclosed is a method for implementing prepaid MMS under the condition that the SCP in which the prepaid subscribers register can provide both prepaid service and prepaid MMS. The method comprises the following steps: a calling subscriber submitting a multimedia message to a MMSC; the MMSC judging the address types of the calling subscriber and the called subscriber who will receive the multimedia message to determine user types of the calling subscriber and the called subscriber; and the originator MMSC or the recipient MMSC implementing charge processing and distribution of the multimedia message through sending a charge request message to SCP based on the user types.

Abstract: The invention discloses a method for forwarding multimedia messages (MMs) between different multimedia messaging service centers (MMSCs), comprising: a) an originator MMSC receiving a MM submitted by an originator terminal, then editing and generating a routing forward request message; b) the originator MMSC sending the routing forward request message generated in step a) to a recipient MMSC; c) the recipient MMSC returning a routing forward response message to the originator MMSC after receiving the routing forward request message; d) the recipient MMSC delivering the MM according to the MM related information contained in the routing forward request message; and e) the recipient MMSC generating a delivery report according to the current delivery status and sending it to the originator MMSC.

Abstract: The invention discloses a method for forwarding multimedia messages (MMs) between different multimedia messaging service centers (MMSCs), comprising: a) an originator MMSC receiving a MM submitted by an originator terminal, then editing and generating a routing forward request message for identifying MM information and information relating to the Value Added Service Provider (VASP) service application; b) the originator MMSC sending the routing forward request message generated in step a) to a recipient MMSC; c) the recipient MMSC returning a routing forward response message to the originator MMSC after receiving the routing forward request message; and d) the recipient MMSC delivering the MM according to the MM information and the information relating to the VASP service application contained in the routing forward request message. With this invention, the problem that corresponding charging cannot be implemented when the MMs are forwarded between different MMSCs can be resolved.