Communication method and gateway device based on SIP phone

摘要

The present invention relates to the communication field and discloses a communication method and gateway device based on Session Initiation Protocol, SIP, phones. To enable a SIP phone to communicate over the Circuit Switched, CS, domain of a High Speed Packet Access, HSPA, network, the technical solution of the present invention includes: when receiving SIP signaling from a SIP phone, sending an HSPA call command associated with the SIP signaling to an HSPA network device; when receiving an HSPA call command from the HSPA network device, sending SIP signaling associated with the HSPA call command to the SIP phone; when receiving a Real-Time Transport, RTP, packet from the SIP phone, sending Pulse Code Modulation, PCM, data associated with the RTP packet to the HSPA network device; and when receiving PCM data from the HSPA network device, sending an RTP packet associated with the PCM data to the SIP phone. The present invention is applicable to SIP communications.