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The Concept Of DID (Direct Inward Dialing)

Telecom Consultant — Sun, 30 Jan 2011 22:06:24 +0000

Since the time of analog telephony, there has been an economic and technological need to have a means serve multiple customers with limited infrastructure. The DID (Direct Inward Dialing) addresses this requirement very well. It is no surprise that even today this idea is relevant despite all the technological advancements.

The original telephony concept associated dedicated resource to each customer. This meant that every telephone number had a dedicated line from the central office to the customer premise. Thus, any organisation looking to get telephone connection for a set of its employees had to purchase equivalent number of individual lines.

With the advent of the Direct Inward Dialing concept, the need for such individual lines was eliminated. Multiple numbers could not be serviced over a single trunk connecting the enterprise PBX to the central office. In the analog telephony system, there used to be operators that would complete the connections. DID concept eliminated the need for such operators too.

This concept was an economically viable alternative for the customer as well as the service provider. For the customer, this service cost a lot less as compared to getting individual lines. For the service provider this meant that the same infrastructure could be used for multiple telephone numbers.

This concept was so effective that even after the inception of digital telephony, DIDs were in demand. Instead of analog trunks, the numbers were now serviced over ISDN links between the PBX and the central office. In fact, till date many enterprise customers subscribe to PRI services to get DID numbers.

The latest innovation in voice telephony is the VoIP. Even here this concept is relevant and is implemented over the trunk between the central office switch and the communication gateway. The dedicated numbers to the gateway are assigned to individual VoIP phones within the organisation.

The Advantages of Metro Ethernet

stesprint2009 — Tue, 08 Jun 2010 22:24:53 +0000

One of the most unique things about the Metro Ethernet system is that you can get all the features at a very less price. It is economical and affordable and thus with a very low investment you can get a huge amount of return

See more here:
The Advantages of Metro Ethernet

Finding a GigE Provider is Currently Difficult

Tue, 08 Jun 2010 01:19:27 +0000

First off before we get started, some people may not even know what GigE is. To make it simple it is probably the fastest speed anyone is going to experience on the Internet. For a long time GigE has just been an enterprise for only those who worked with the most sophisticated of systems.

Originally posted here:
Finding a GigE Provider is Currently Difficult

#3: Garmin Astro 220 + 2 DC30 Dog Tracking Collars Bundle

4enzic — Mon, 10 May 2010 10:06:11 +0000

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#3: Garmin Astro 220 + 2 DC30 Dog Tracking Collars Bundle

#3: Vosonic GV6330 Vehicle Safeguard LCD Car Video Camera Recorder – Green

Mon, 10 May 2010 10:06:11 +0000

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#3: Vosonic GV6330 Vehicle Safeguard LCD Car Video Camera Recorder – Green

#2: VideoSecu DIRB4 4 pack fake security cameras outdoor indoor CCTV bullet style dummy camera home security surveillance imitation cameras

cyberbiker — Mon, 10 May 2010 10:06:11 +0000

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#6: Apple MacBook Pro MC024LL/A 17-Inch Laptop

ct_elmore — Mon, 10 May 2010 10:06:10 +0000

Apple MacBook Pro MC024LL/A 17-Inch Laptop by Apple (3) Date first available at Amazon.com: April 13, 2010 Buy new: $2,299.00 Click to see price 6 used & new from $1,999.99 (Ranking is updated hourly. Visit the Hot New Releases in Laptops list for authoritative information on this product’s current rank.)

#5: HP Pavilion Elite HPE-250F Desktop PC (Black)

Mon, 10 May 2010 10:06:09 +0000

HP Pavilion Elite HPE-250F Desktop PC (Black) by Hewlett-Packard Date first available at Amazon.com: April 25, 2010 Buy new: $1,517.00 $1,207.97 3 used & new from $1,187.99 (Ranking is updated hourly. Visit the Hot New Releases in Desktops list for authoritative information on this product’s current rank.)

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#5: HP Pavilion Elite HPE-250F Desktop PC (Black)

#1: HP Pavilion Elite HPE-210F Desktop PC (Black)

GarrettZ — Mon, 10 May 2010 10:06:09 +0000

HP Pavilion Elite HPE-210F Desktop PC (Black) by Hewlett-Packard Date first available at Amazon.com: April 11, 2010 Buy new: $1,124.00 $898.59 2 used & new from $880.99 (Ranking is updated hourly. Visit the Hot New Releases in Desktops list for authoritative information on this product’s current rank.)

#1: AmazonBasics Universal Travel Case for Small Electronics and Accessories (cameras, mobile phones, GPS units) (Black) [Amazon Frustration-Free…

Spudman — Mon, 10 May 2010 10:06:08 +0000

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#1: AmazonBasics Universal Travel Case for Small Electronics and Accessories (cameras, mobile phones, GPS units) (Black) [Amazon Frustration-Free…