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VMware VM – ‘I moved it’ vs ‘I copied it’

If you’ve worked with VMware products before, you may have (at at some point likely will), encounter a pop-up similar to this one.

What is it asking? What prompted this question? Why does VMware want the default to be, ‘I copied it’? The short answer is that VMware ‘thinks’ that it is possible that this VM was cloned from a pre-existing VM (i.e. ‘I copied it’). If that is the case, VMware needs to change the unique identifiers within the cloned machine, so that potential hardware & software conflicts are avoided. Choosing ‘I copied it’, therefore, is preferred over ‘I […]

By |June 5th, 2015|Blog, VMware|1 Comment
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A basic Asterisk v1.8 extensions.conf configuration

This is a basic extensions.conf (the Asterisk dialplan) configuration for Asterisk v1.8. As you can see, only two lines are actually necessary in extensions.conf for the SIP user agents defined in sip.conf to be able to call one another.

If you’re confused, than examine this dialplan in conjunction with my previous blog post on configuring a basic sip.conf in Asterisk 1.8. It may also enhance your understanding of Asterisk to examine the script I posted that complies any version of Asterisk in Ubutnu.

The default location for extension.conf on an Ubuntu 10.04 and 12.04 system is:
/etc/asterisk/extensions.conf
The configuration file is commented for maximum clarity. The active code […]

By |June 19th, 2013|Blog|0 Comments
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    Asterisk 1.8 – dial CLI command – No such extension ‘401’ in context ‘default’

Asterisk 1.8 – dial CLI command – No such extension ‘401’ in context ‘default’

This post is regarding Asterisk 1.8.11.0

When logged into the Asterisk CLI, you can send ‘test’ calls via the following command:

console dial <extension>@<context>

The following example would place a test call to extension ‘555’, found in the context ‘zorkfan’:

console dial 555@zorkfan

Failure to use the ‘@<context>’ portion of the command will result in Asterisk looking for the extension in the context ‘default’. If you don’t use the context ‘default’, then you’ll see the following error displayed:

No such extension ‘<extension>’ in context ‘default’

Finally, failure to use the ‘console’ portion of the command will result in the Asterisk CLI displaying the following error:

No such command “dial […]

By |July 13th, 2012|Blog|1 Comment
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Watch out Cisco, here comes Avaya!

Today, while taking a break from playing with some gear in the Alta3 Research labs, I found an interesting article while running a search on ‘SIP’ in GoogleNews. Not-so-surprisingly, Avaya’s name popped up in several headlines. As I just finished helping write Alta3 Research’s course on Avaya SIP Trunking, I thought this might be an opportune time to comment on why Avaya and SIP are becoming so intimately entwined.

Avaya recently made a press statement at the U.S./Gov Sales Leadership and Partner Conference, reminding the public that they have released 60+ products in less than two years- more than Avaya had […]

By |November 18th, 2011|Blog|0 Comments
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