RAC0218: The maximum number of user sessions is reached

racadm racreset

Sonus SBC 1000 SNMP traps and SNMP GET

To setup SNMP for Sonus, please use the follwing reference:

https://support.sonus.net/display/UXDOC50/Sonus+SBC+1000-2000+Download+Center

Note also that community string should be low case, check firewall settings for UDP 162 and 161.

Use MIB browser to crack OID code for specific interface you want to monitor.

As example:

QLogic BCM57xx and 57xxx drivers:

http://www.dell.com/support/home/ch/fr/chbsdt1/Drivers/DriversDetails?driverId=RD1G0

Explanation of different types of PBX cabling with photos

http://www.cityinfrastructure.com/Voice/Voice.html

Lync SBA egde firewall port requirements

Normally we need only to open port 5062 on the egde for SBA. Ref: http://www.microsoft.com/en-us/download/confirmation.aspx?id=39968   - check the right bottom picture

If there are no directors in the topology, then also 5061 two ways.

Note that port 5062 is needed on Edge servrs assigned to SBA/FrontEnd pool. However, I recommend to open it in all other edges pools as well. This way you have a flexibility to change edge pool in needed.

DVD drive is not recognized in Windows 8

Suddenly I realised that my CDROM/DVDROM is missing in Windows 8. BIOS does detect it as usual.

The issues is inside Windows. The registry trick helped to solve it:

reg.exe add "HKLM\System\CurrentControlSet\Services\atapi\Controller0" /f /v EnumDevice1 /t REG_DWORD /d 0x00000001

reboot.

Little bit annoying, I do not understand why I should use registry for a very standard feature on my PC.

Intel chipset Z77 vs X79

As anyone who is trying to get more than 32GB on a home lab PC, I asked the same question: What motherboard do I need to obtain more than 32 GB RAM. The answer is not so simple, as the popular Z77 and H77 are not supporting RAM over 32GB. At this moment the only choice is X79.  The drawback is that you need LGA 2011 socket processor and that fact is that Z77 is more recent than X79. So, no 3rd generation  I7 support for this one. Waiting for Intel to tic-tac further and hopefully further price drops...

So from timing and price point of view, anyone should be happy with Z77 (or H77 locked) and quite affordable CPU I7-3770K (or I7-3700 locked) = limited to 32GB RAM and 4/8 cores.

If you are ready to wait until June 2013, then you may save some money on current lineup since a new one is getting ready: 4th generation of Intel CPU and Z87, H87, etc. chipsets - refer to http://cdn.wccftech.com/wp-content/uploads/2013/03/Intel-Desktop-Roadmap.jpg

Why you want to buy Samsung or Intel SSD disks?

One of the reasons is the fact that these companies produce NAND chips themselves ( http://www.dramexchange.com/WEEKLYRESEARCH/Post/2/3030.html)

and they have a theoretical right to select the best quality batches to be used in their own final products.

TRIM on SSD disk in Windows 7

Verify that TRIM is enabled on W7 by runing as admin command:

fsutil behavior query DisableDeleteNotify

it should return 0

TRIM is a way to collect garbage on SSD otherwise it will be slowing down with time.

CPU comparison

Compare CPU performance - notebooks and desktops
http://www.notebookcheck.net/index.php?id=2436