This will start MySQL without asking you for any password. Once started and you’re on MySQL CLI, you can update the root password:

Now you can start MySQL as normal.

Try to login with your new password

The following document will guide you thru the installation of the newly released opensips vesion 1.5 in Red Hat Enterprise Linux 5.3 along with mysql. I will divide this process in 2 phases 1.- Installation of Red Hat Enterprise Linux 5.3 2.- Installation and configuration of Opensips, webmin and mysql

The following components and paramenters will be used for the purpose of this installation guide, securing your opensips environment is beyond this installation guide,

-Red Hat Enterprise Linux Server release 5.3 (Tikanga), 2.6.18-128.1.6.el5 -mysql-server-5.0.45-7.el5.i386 -An HP DL380 3.20 2gb of RAM -Fully Qualified Domain Name of the server will be simulacro.sipcorner.com -IP address of the server 10.10.10.101

1.-Installation of Red Hat Enterprise Linux 5 (Phase 1)

Let’s Proceed to install Red Hat Enterprise Linux 5 -Proceed to Insert the RHEL 5 DVD in your server At the RHEL boot screen “press enter” The system will ask you to either test the media or skip the media test, I personally choose to skip the media since I know the integrity of the DVD is good, but if you have doubts about the integrity of your media I will suggest you to continue with the media test. -At the RED HAT ENTERPRISE LINUX 5 initial Install screen select NEXT -Proceed to select the language, I selected English(English) -Proceed to select the appropriate keyboard for the System, I selected U.S. English -Proceed to enter the Red Hat installation number and select OK -Select to Install Red Hat Enterprise Linux Server, then select OK -Because I have RHEL 5 currently installed in my Hard Drive, and I want to install a new copy of RHEL 5, the system will now asked me if I want to remove all linux partitions on the selected drives and create a default layot, since I want to do this, I will simply select the NEXT button -As a precaution, the system will asked me if I really want to remove all the existing Linux partitions in the Hard Drive, Since i want to do this I select the Yes button. -The system will now asked to configure the ethernet0 interface, since I want the system to have an static IP address, I select the eth0 interface and I select EDIT. -The EDIT Interface screen will open, and I will now proceed to enter my network information manually, then select OK, next I proceed to enter the FQDN for this server, for example simulacro.sipcorner.com, next I will proceed to continue entering my network information, such as my gateway, primary DNS and Secondar DNS servers, then I will proceed to select the NEXT button -Proceed to select your timezone accordinally -Proceed to enter a Password for the Root Account -Red Hat Enterprise Linux 5 default installation includes a set of software applicable for general internet usage, although you can choose to install additional components, such as servers and others, for the purposes of this document, I will proceed to check the Web Server option and also I will proceed to check the Customize now option, then I will select NEXT. -Because I checked the customize option, I am now being presented with [...]]]> How to install opensips in a Red Hat Enterprise Linux 5 server with mysql

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Anyways, now the reminder service is there, up and running. If you have a facebook account, all you need to do is search for ‘reminders’, and it’ll show you a reminders app with a telephone icon as follows:

Just click it, and it’ll ask you that the app wants your basic info and your email address. Accept it, and you are all setup to use the reminder app.

Or even simpler, just click the app screenshot above and it’ll take you to facebook and install the app for you, if you gave it permission to do so.

The interface is simple to use, made in JavaScript, very user friendly.

All the items are self explanatory, along with a help icons which tell you how to use the associated fields.

As a new user, $10 are added to your account. You have to register your phone numbers where you would like to receive the reminder calls.

Give it a try and I am sure you’ll find it a very useful app. Just a note, that the phone reminder part is good only for North America. Rest of the world can use only email reminders. Based on demand, I’ll see if I can open the International routes to certain countries.

Anyways, if you need to access your CentOS server via telnet and as root user, here is what you do:

Next, edit /etc/pam.d/remote file and comment out the first line, i.e.

On a server running Proxmox VE with a few instances of CentOS 5.2, each with asterisk and other related stuff, and network interface 192.168.91.1/24, a colleague of mine wanted to hook up two extensions. The problem was that he was at 10.18.0.10/16, though on the same switch as the Proxmox server. There were no routers involved.

Those of you who know Proxmox, know that its network interface is a bridged interface and ifconfig shows it as vmbr0. The Asterisk server instance itself was at 192.168.91.13.

So what I did was as follows:

Assigned a new virtual IP address to vmbr0 to match my colleague’s network:

Next, created the following iptables rule, to direct all the traffic on this new interface, coming from 10.1 network to the asterisk server at 192.168.91.13

And that was it. Now he could point his extensions to 10.1.18.1 to get to the asterisk server. SIP registrations and media all worked well with these settings. At this time I also learned something new, that in Windows XP Pro, you could have multiple IP addresses assigned to the same NIC. So I assigned my workstation a 10.1 address, and was able to reach the same asterisk server using both the IP addresses, without a need to disconnect any of my ssh sessions, and praise the age of amazing technologies we live in.

By default Asterisk stores call activity log in folder /var/log/asterisk either in file named messages or file named full. As the name suggests, the full file has more detailed record, and this is what we shall consider for the purpose of this blog.

This file can be hundred of mega byte in size based on how busy your system is. In order to analyze the contents of this file for a particular call, first of all what you need to do is to find the session id for that call. If you carefully note on the What you need to do for troubleshooting purposes is to extract a single call from it in a separate file and and then analyze it.

Consider the following example. Today a client of mine called regarding some issue calling a particular number. We shall assume the number was 7055623000. Now for my particular dial plan, which is very complex, but because I have personally hand coded it all from scratch, I know every line of it. So I would know where a particular call starts and how the dial plan flows. But even if I won’t, I would ask the client for:

When you have the number, i.e. 7055623000 in this case and you know the time of problem was around 11:40, open the log file in a text editor or viewer and search for this number. In my dialplan it would look something like following:

It was the first time that I dealt with this type of situation, and thought mention the fixing procedure here for those facing similar issue.

Basically any corrupted MySQL table can be fixed using this procedure.

One cause of this error is the disk hitting 100%, so use df and du -sk / to try and figure out where your clogs are.

Now using the mysql> prompt and run the following:

This will show you the error message.

Now go back to the Linux command prompt and issue the following command:

This will, in most cases, will fix the corrupted table, and you’ll be back on the track.

A phone reminder is a reminder which is sent to you over the phone. It amazingly makes various things in your life more manageable which otherwise would stay mismanaged because you simply forget about them. Life is busy for everyone in this age, and with so much going on, it is very easy to forget many important tasks and chores.

VisionVoIP is one of the very few providers of this wonderful service, through a very simple, easy to use and user friendly interface. I use it on daily bases, and am kind of addicted to it. I have setup various monthly, daily and weekly reminders on it which I receive via phone, email and text messages. Anything which I consider important, I immediately make a reminder of it at VisionVoIP. It is kind of my personal assistant which keeps track of my schedule.

This service from VisionVoIP is not very well known yet, and it’ll take time until it gets recognized, unless Angelia Jolie or Megan Fox start using it, and make it famous more quickly.

Here I shall describe how their wonderful service works.

First of all you sign up, as you would for any service. It is pretty simple, quick and painless process. You click on the ‘Register’ link on top right corner of the page, it’d pop up a dialog box and ask for your email address and timezone. Time zone is important, otherwise your reminders will not be sync with your real time.

For security purposes, by default this service doesn’t allow to receive reminders on any number. Otherwise a spammer can type in your number and spam you with unwanted messages. There can be other misleading calls generated to people not sign up to receive these calls. So it is important that you register the numbers where you want to receive your reminder calls.

Its a simple two step process which you do in your ‘Profile’, by clicking on the Profile link on top right of the screen. This will pop-up your profile information. Here click on the link [Add a new number]. Now the screen will look like following:

As you can see here, at the very bottom it gives you a field to enter your phone number and click on the ‘Get Validation Code’ button. How it works is that you enter a valid 10 digit North American number in this field, and click on this button. In a few seconds you receive a call on this number, and it tells you a 4 digit validation code, something like 1348. In the meanwhile on this screen, your number is appeared in front on the Phone Numbers title, with a field to enter your validation code, and click Register. See the screen shot below:

Once registration is successful, the number will be added to the registered phone numbers list.

If for any reason [...]]]>

A phone reminder is a reminder which is sent to you over the phone. It amazingly makes various things in your life more manageable which otherwise would stay mismanaged because you simply forget about them. Life is busy for everyone in this age, and with so much going on, it is very easy to forget many important tasks and chores.

VisionVoIP is one of the very few providers of this wonderful service, through a very simple, easy to use and user friendly interface. I use it on daily bases, and am kind of addicted to it. I have setup various monthly, daily and weekly reminders on it which I receive via phone, email and text messages. Anything which I consider important, I immediately make a reminder of it at VisionVoIP. It is kind of my personal assistant which keeps track of my schedule.

This service from VisionVoIP is not very well known yet, and it’ll take time until it gets recognized, unless Angelia Jolie or Megan Fox start using it, and make it famous more quickly.

Here I shall describe how their wonderful service works.

Sign Up

First of all you sign up, as you would for any service. It is pretty simple, quick and painless process. You click on the ‘Register’ link on top right corner of the page, it’d pop up a dialog box and ask for your email address and timezone. Time zone is important, otherwise your reminders will not be sync with your real time.

Registering your phone numbers

For security purposes, by default this service doesn’t allow to receive reminders on any number. Otherwise a spammer can type in your number and spam you with unwanted messages. There can be other misleading calls generated to people not sign up to receive these calls. So it is important that you register the numbers where you want to receive your reminder calls.

Its a simple two step process which you do in your ‘Profile’, by clicking on the Profile link on top right of the screen. This will pop-up your profile information. Here click on the link [Add a new number]. Now the screen will look like following:

As you can see here, at the very bottom it gives you a field to enter your phone number and click on the ‘Get Validation Code’ button. How it works is that you enter a valid 10 digit North American number in this field, and click on this button. In a few seconds you receive a call on this number, and it tells you a 4 digit validation code, something like 1348. In the meanwhile on this screen, your number is appeared in front on the Phone Numbers title, with a field to enter your validation code, and click Register. See the screen shot below:

Once registration is successful, the number will be added to the registered phone numbers list.

If for any reason you don’t receive the call to get the validation code, e.g. you are trying to receive call on a cell phone and the signal is not good, you can click on the Call button and a get the call once again.

Setting up reminders

Sample reminder screen shot:

Once you have at least one number registered, you can start setting up reminders. For this go to the Phone Reminders section by clicking on the Phone Reminders link top of the screen.

The Phone Reminders section has a few simple and straight forward fields to setup a reminder. Each field is accompanied by a help icon hovering on which will display you details about that particular field. Refer to the following screen shot.

1. As you can see, it has Date and Time field which when you click, a pop-up appears to select year, month, day, hour and minute.
2. Next is Reminder Type. There are different types of reminders you can setup here. Most commonly you’d use Text-to-voice, which is you type in a text message, and it’ll be played to you in a computerized voice. But if you prefer to have a reminder in your own voice, you can select Your own voice option. In you already have your recorded voices, you can pick one from Pre-recorded voice option. Although the service is called phone reminder, but it also gives you option to use Email and Text/SMS way of receiving the reminders if you prefer that.
3. So moving on, assuming that you decided to stay with Text-to-voice message, you go to the Reminder Message field and type in a message in plain English.
4. Now you have to pickup a number in Receive At field where you will receive the phone calls. On a new sign up, you won’t see any phone number listed here, except an extension 200. We shall discuss is a separate post what is this extension 200. You need to add your phone numbers in your Profile, which is described above.If you want to test your reminder message instantly, to hear how it’d sound, there is the ‘Test‘ button right in front of this field. Clicking on this button will generate a call to your phone, where you’ll listen to your message. Note that standard calling charges will still apply and deducted from your account.
5. Next, there is an optional field Connect to. This is a wonderful option. Lets say you want to remind yourself of calling somebody, e.g. calling your real estate agent at 10 AM in the morning. So first you setup a reminder message for 10 AM, something like ‘call mike’, and then in the Connect to field type in his phone number. Now the reminder call will play you text ‘call mike’ and then give option to connect to his number. This simply makes calling Mike much easier in one go.
6. Once the reminder is all set, you can also setup a Repeat on it. It is useful for the reminders which you need to be repeated to you. For example, taking a medicine every night at 10 PM for two weeks. So you setup a reminder for 10 PM, and setup the Repeat option to Daily and Frequency to 14. The Frequency option appears once you setup a Repeat option, which could be Hourly, Daily, Weekly or Monthly.
7. When you are done, simply click the ‘Add this reminder to the list’ button, and the reminder will be added to the list.

Modifying a reminder already in the list

Now that you have added a reminder, and want to modify it, .e.g change the date or time, or the message itself, etc. VisionVoIP has made it simpler than you can imagine. You can just click your mouse where you want to make a change, and change it right there. After making a change, click your mouse somewhere else on the screen, and your change will be updated. You’ll see the changed field flashing in blue, to tell you that the change you made is accepted.

Deleting a reminder message

Deleting a reminder is just a matter of clicking on the dustbin icon left of the reminder.

The reminders which are already executed, are marked with a strike through line, colored gray and are not modifiable. They are not deleted unless you actually delete them manually. This is so that you have a recent history of reminders in case you want to refer to them.

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The side effect of this bug is that some apps stop working. In my case the text messaging would stop working, i.e. i won’t be able to receive any text messages. Some HTC users have also noticed similar problem.

Official answer to solve this problem is very ridiculous and Microsoftic, i.e., as you might have already guessed, format your system. Apparently these answer providers have came from the Windows background and don’t know in the Linux world we don’t format our systems, we fix them. In fact in the Linux world very few people actually know at all how to format a system, because we simply never need to do this. And as a side note, we don’t even reboot our Linux systems. They are started once, and thats it. Rebooting is again a necessity introduced by Microsoft, due to their poorly designed Windows kernel.

Anyways, what I have found so far helpful, which worked for me, is to unmount the SD card and reboot the phone. in this case rebooting is required because there is no option in Android to mount the SD card again. Rebooting mounts it again and the error message is gone, and the text messaging starts to work.

To unmount it, go to Settings->SD card & phone storage->Unmount SD card.

Those who really want to, and can afford to format the system, go to Setttings->Privacy->Factory data reset.