Errata
The errata list is a list of errors and their corrections that were found after the product was released.
The following errata were submitted by our customers and have not yet been approved or disproved by the author or editor. They solely represent the opinion of the customer.
Color Key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update
Version | Location | Description | Submitted by | Date submitted |
---|---|---|---|---|
Printed | Page 2 Mesh Vs Switched (bottom of page) |
The number of links (L) in a mesh network is = (L * (L-1))/2. |
Anonymous | |
Printed | Page 16 Thirs para from bottom |
The explanation is slightly confusing. I suggest something along the lines of: |
Anonymous | |
Printed | Page 41 bottom of page |
Digium uses svn (subversion) now instead of CVS for its versioning system. In light of that, the commands on page 41 should read: |
Anonymous | |
Printed | Page 42 middle of the page |
Commands for compiling asterisk are incomplete. Here is what I found works (see the notes for lines that were added): |
Anonymous | |
Printed | Page 43 middle of the page |
It might be helpful to include some troubleshooting tips for the X100P. Apparently this card is very sensitive to IRQ conflicts. I couldn't get mine to work till I moved it to a different machine. Perhaps you could provide a link to the following document installation guide which includes troubleshooting instructions: |
Anonymous | |
Printed | Page 46 Top, first paragraph |
To kill the asterisk process you would type: |
Amrom Morgenstern | Jan 17, 2010 |
Printed | Page 48 full page |
Not sure what is wrong here, but I was unable to "secure" asterisk using these instructions. |
Anonymous | |
Printed | Page 48 full page |
Not sure what is wrong here, but I was unable to "secure" asterisk using these instructions. |
Anonymous | Jul 30, 2008 |
Printed | Page 50 2nd paragraph |
Book says, "you should get a 404 message on the phone's display". I did not, rather I got the automated attendant. |
Anonymous | |
Printed | Page 60 Top figure 4-1 |
The figure does very little to show the different state or federal agencies. It is simply a diagram of different carrier types. the reference to this figure on the bottom of page 59 is therefore unclear. |
Amrom Morgenstern | Jan 17, 2010 |
Printed | Page 62 Third para from top |
"At the edge of the PSTN are large, mainframe-like switches CALLED exchanges" |
Anonymous | |
Printed | Page 72 second to last paragraph |
/etc/asterisk/zapata.conf file does not exist initially. I had to create it using the following syntax (note the [channels]): |
Anonymous | |
Printed | Page 86 last paragraph |
/etc/extensions.conf should be /etc/asterisk/extensions.conf |
Anonymous | |
Printed | Page 112 6.2.1, 3rd para |
"DAC includes of quantizing or digital "sampling" of sounds," |
Anonymous | |
Printed | Page 117 First para |
"A 30ms sound frame takes a third longer to encode than a 20 ms one?" |
Anonymous | |
Printed | Page 119 Table at top |
The "Voice bits per packet" for G.729A and GSM may be incorrect. For G.729A it should be 80 bits, and for GSM 260 bits. |
Anonymous | |
Printed | Page 195 2nd para |
"Chances are, if the echo occurs less than 150 ms from the time you actually said the words, then you won't notice it". |
Anonymous |