Invention Grant
- Patent Title: Systems and methods for encapsulation based session initiation protocol through network address translation
- Patent Title (中): 通过网络地址转换封装基于会话发起协议的系统和方法
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Application No.: US10898726Application Date: 2004-07-23
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Publication No.: US08090858B2Publication Date: 2012-01-03
- Inventor: Petteri Pöyhönen , Ritva Siren
- Applicant: Petteri Pöyhönen , Ritva Siren
- Applicant Address: FI Espoo
- Assignee: Nokia Siemens Networks OY
- Current Assignee: Nokia Siemens Networks OY
- Current Assignee Address: FI Espoo
- Agency: Alston & Bird LLP
- Main IPC: G06F15/16
- IPC: G06F15/16
Abstract:
Provided are improved SIP communication systems and methods for traversing firewalls, NATs, and ALGs. An encapsulation protocol is used to preserve the original SIP message by encapsulating the original SIP message in visible encapsulation protocol of layers 4+. An encapsulated SIP message is decapsulated after transparently traversing a firewall, NAT, and/or ALG.
Public/Granted literature
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