The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
This article describes a Mobile PC Desktop dock that has a passthrough for a desktop VOIP Phone that is connected to the LAN connection in the office or room.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
55% of the total text.
Page 1 of 2
VOIP Phone connection to a mobile computer dock
In the future desktop and mobile products will have built-in VOIP capability. One way to do this is add a software application to run the phone. Customers may not like this idea since the operation of the phone would be dependent upon the operating system to be running. A new open standard for VOIP phones is emerging called SIP. This allows for low cost VOIP phones that plug directly into an RJ45 powered ethernet port. Most people only have one of these ports in their offices. Desktop PCs can add a second "pass-through" RJ45 port but this is impractical on a mobile pc because there is usually no room for it, but there is room on the mobile docking station. This product description solves the problem of how to use a voip phone with a mobile pc while it is docked by imitating the desktop pc .
Figure 1 is a view of a desktop PC with a second rj45 port added to it..
D esktop P C R ear V iew
R J 45 in
R J 45 out
Figure 2 is a schematic representation of the modified ethernet controller on the PC motherboard.
Ethernet Chip Mac/Phy
RJ 45 out
This figure shows that the ethernet IC has two ports. The IC has a built in switch to guarantee quality of service to the second port (out) that has the voip sip phone attached. The motherboard passes the powered ethernet power to the "out" port from the "in" port. (out from wall, in from phone). With this configuration a user can have one powered ethernet...