The update also fixes problems that millions of users had with iMessage, where it failed to send messages over the data channel.
There is a backup data channel on board, but it had not been used in the 18 years that Hubble has been aloft.
"Google has lost access to a very, very important data channel in the North American market," commented Ben Wood, mobile analyst for CCS Insight, a research company based in London.
The iMessage service sends messages via the data channel, meaning that they can be any length, unlike the text messages which they effectively replace and which are limited to 160 characters.
The Tyzx vision system is based on stereo vision -- two closely spaced inexpensive video cameras linked by a high-speed data channel to a custom processing card in a standard personal computer.
Last week, the telescope's managers succeeded in turning the router back on, using a backup electrical and data channel that had not been used in the 18-year life of the telescope.
"Eventually, everything migrates to a data channel," said Brian Higgins, an executive at Verizon Wireless who is developing products and services for the company's high-speed 4G network.
G.991.1 systems require the use of a "splitter" at the customer's premises to filter and separate the analog voice channel from the high-speed data channel.
Figure 3 Training data channel response.
