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Cellular / Mobile Standards History

Posted in Compliances (1300),Networking (340),Policies - Standards (600),Security (1500) by Guest on the November 17th, 2007

Cellular / Mobile Standards History

0G

MTS (1946 – US, Bell System)
IMTS (1969 – US, Bell System)
OLT (1966 – Norway)
AMTS (Japan)
ARP (1971 – Finland)
MTD (1971 – Sweden)

1G

1G cell phone technology encompassed analog standards introduced in the 1980s and continued until replaced by 2G digital cell phones.
NMT (1981- Nordic PTT’s)
AMPS / TACS / ETACS / JTAC (1983 – Bell Labs)
ARDIS / DataTAC (1983 – Motorola & IBM)
Mobitex (1986 – Ericsson)

2G

TDMA (Time Division Multiple Access)
GSM (1990 – ETSI)
D-AMPS (1990 – IS-54, IS-136 – TIA)
PDC (1993 – ARIB)
PHS (1995 – NTT Labs)
IS-95/cdmaone (1995- Qualcomm/ANSI/TIA)
GPRS/EDGE (1997/2003 – ETSI/3GPP)
CDMA2000 (2000 – Qualcomm/3GPP2)

3G

Carrier 3G EVDO network currently averages 400 to 700 Kbps with peak rates up to 2 Mbps.
W-CDMA/ UMTS/FOMA (1991 NTT/3GPP)
EV-DO/IS-856 (2003 –Qualcomm/3GPP2)
UMTS-TDD (2007 – 3GPP)
UMA (2006 – 3GPP)
HSPA (2007 – 3GPP)

4G

4G communication at 100 Mbps while moving, and 1 Gbps while stationary
WiMAX (2006 – IEEE / WiMAX Forum)
LTE (~2009 – 3GPP)
UMB (~2009 – 3GPP2)

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UNIX sed Commands

Posted in O S (375),Security (1500) by Guest on the November 17th, 2007

Unix sed Commands 

sed ‘s/wizard/guru/g’ file1                   replaces every occurrence of the string wizard with the string guru
sed -n ‘s/wizard/guru/gp’ file1              replaces and prints only those lines where the substitution was
                                                             made  -n print only when command p is given
sed ‘/Comment:/d’ file1                          deletes all the lines that contain Comment: from the file. sed
                                                               writes to standard output so the original file is not changed

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Database Mirroring Best Practices

Posted in Compliances (1300),Security (1500) by Guest on the November 2nd, 2007
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ITIL Request Management Benefits

Goals:

Increase productivity
Enforce business rules
Provide automation where possible
Provide audit trail
De-provisioning and re-provisioning appropriate assets
Change Order Management
Workflow Tasks
Individual assignment and notification
Track cost & time

Often used by:

IT
HR
Facilities

Request / Incident / Problem Management Overview / benefits:

Request for Change or Service
Profile information Activities Related requests Attachments Properties
Announcements
Submit requests / Self-Service
Search
Knowledge base
Check status
Track assets through the operational life-cycle

Relate assets to:

Requests or Change Orders
Contacts, end-users
Organizations
Out-of-the-box integration with Asset Management tools (inventory discovery tool)

Root Cause – Knowledge retention / re-use:

Key word search
Web-based
Analysts/End user enabled
Often used for:
Storing “Internal Memory”
Initial troubleshooting steps
Defining processes
Compress Ramp-Up Time
Leverage Known solutions

Business Benefits:

Operational Efficiency and Cost Containment
Streamlines user management
Automates provisioning & de-provisioning
Reduces help desk and other user administration costs
Increases user productivity
Business Facilitation with Risk Mitigation
Supports new services, applications and data bases
Improves customer service
Supports regulatory compliance
Prevents “ghost-user accounts” 

 http://www.bestitdocuments.com/Change_management.html

 

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