Taxi Driver Online
http://www.taxi-driver.co.uk/phpBB2/

Cordic
http://www.taxi-driver.co.uk/phpBB2/viewtopic.php?f=6&t=339		 Page 1 of 3
Author:  Tony Blah [ Wed Feb 11, 2004 3:59 pm ]
Post subject:  Cordic
Can some one tell me honestly what the system is like when the GSM network gets busy, like when it snowed the other week, I could not place a GSM voice call and these take priority over GPRS data traffic and what are we to expect on New Years eve? :?:
Author:  jason cole [ Wed Feb 11, 2004 7:38 pm ]
Post subject: 
I was told by Extended Systems that there is no intention to expand the GPRS network.

PS : Before anyone asks, "Tony Blah" is not me :roll:
Author:  Rob McCulloch [ Wed Feb 11, 2004 7:43 pm ]
Post subject:  Re: Cordic
Tony Blah wrote:
Can some one tell me honestly what the system is like when the GSM network gets busy, like when it snowed the other week, I could not place a GSM voice call and these take priority over GPRS data traffic and what are we to expect on New Years eve? :?:


Tony - Cordic uses Orange and or O2 because they provide a dedicated GPRS timeslot for data traffic. This means that irrespective of the load on the voice network, GPRS packets always get through and at about 1p a job makes great value for national, reliable and secure coverage.

Hope this helps

Rob McCulloch
Cordic Ltd
Author:  George Brush [ Wed Feb 11, 2004 7:44 pm ]
Post subject: 
Tony Mate,

can you get on the scrambler so we can discuss this?

we cannot have anyone saying there is satelite problems as we have at the moment got control of the world and the sites of all weapons and vehicles with GPS we know where the lot are.

Soon we are launching the one for your country and things will improve and the big bonus will be we will know where every taxi and private hire car is along with the rest, the claw back on tax alone will be a mini fortune.

please please lets talk about this.

your friend forever

George Brush
Author:  Tony Blah [ Wed Feb 11, 2004 7:54 pm ]
Post subject:  Re: Cordic
Rob McCulloch wrote:
Tony Blah wrote:
Can some one tell me honestly what the system is like when the GSM network gets busy, like when it snowed the other week, I could not place a GSM voice call and these take priority over GPRS data traffic and what are we to expect on New Years eve? :?:


Tony - Cordic uses Orange and or O2 because they provide a dedicated GPRS timeslot for data traffic. This means that irrespective of the load on the voice network, GPRS packets always get through and at about 1p a job makes great value for national, reliable and secure coverage.

Hope this helps

Rob McCulloch
Cordic Ltd




Ok, spoke to 02, they say they reserve one slot per segment in any cell for GPRS data, so thats wonderful...... I think, then I asked about about who keeps an eye out for incresed data users...he could not answer, so if i buy cordic and so do my competitors who looks after me and guarantees me service availability since it takes O2 and others many many months to add base sites and improve service due to planning regs?
Author:  PooleTaxis [ Wed Feb 11, 2004 8:32 pm ]
Post subject:  Re: Cordic
Tony Blah wrote:
Rob McCulloch wrote:
Tony Blah wrote:
Can some one tell me honestly what the system is like when the GSM network gets busy, like when it snowed the other week, I could not place a GSM voice call and these take priority over GPRS data traffic and what are we to expect on New Years eve? :?:


Tony - Cordic uses Orange and or O2 because they provide a dedicated GPRS timeslot for data traffic. This means that irrespective of the load on the voice network, GPRS packets always get through and at about 1p a job makes great value for national, reliable and secure coverage.

Hope this helps

Rob McCulloch
Cordic Ltd




Ok, spoke to 02, they say they reserve one slot per segment in any cell for GPRS data, so thats wonderful...... I think, then I asked about about who keeps an eye out for incresed data users...he could not answer, so if i buy cordic and so do my competitors who looks after me and guarantees me service availability since it takes O2 and others many many months to add base sites and improve service due to planning regs?


We use 02 GPRS and had a problem in 1 area where the signal was inconsistant I contacted 02 and reported the problem. The next day their engineer contacted us and took details and location etc., that afternoon he checked the area and called to tell us a minor fault was found and had been rectified, he was very helpful and gave us his cellphone number for us to use if we had any problems. After the week-end the O2 help desk called and asked if everything had been fixed to our satisfaction.
They seem very keen to look after their customers, if they continue to respond as they did on this occasion I do not forsee any problems using GPRS based systems. Are you still using gas lamps, I hear that electricity power cuts are a problem when they happen. You have to leave the cave sometime or you will become extinct.
T.
PS. I am an O2 shareholder, does that mean I am biased.
Author:  Mr Hilter [ Wed Feb 11, 2004 9:44 pm ]
Post subject: 
What is the limitation of GPRS?

It should already be clear that GPRS is an important new enabling mobile data service which offers a major improvement in spectrum efficiency, capability and functionality compared with today's nonvoice mobile services. However, it is important to note that there are some limitations with GPRS, which can be summarized as:

LIMITED CELL CAPACITY FOR ALL USERS

GPRS does impact a network's existing cell capacity. There are only limited radio resources that can be deployed for different uses- use for one purpose precludes simultaneous use for another. For example, voice and GPRS calls both use the same network resources. The extent of the impact depends upon the number of timeslots, if any, that are reserved for exclusive use of GPRS. However, GPRS does dynamically manage channel allocation and allow a reduction in peak time signalling channel loading by sending short messages over GPRS channels instead.

RESULT: NEED FOR SMS as a complementary bearer that uses a different type of radio resource.



SPEEDS MUCH LOWER IN REALITY

Achieving the theoretical maximum GPRS data transmission speed of 172.2 kbps would require a single user taking over all eight timeslots without any error protection. Clearly, it is unlikely that a network operator will allow all timeslots to be used by a single GPRS user. Additionally, the initial GPRS terminals are expected be severely limited- supporting only one, two or three timeslots. The bandwidth available to a GPRS user will therefore be severely limited. As such, the theoretical maximum GPRS speeds should be checked against the reality of constraints in the networks and terminals. The reality is that mobile networks are always likely to have lower data transmission speeds than fixed networks.
Author:  Rob McCulloch [ Thu Feb 12, 2004 4:14 pm ]
Post subject: 
Mr Hilter and others, a fair question about GPRS if you're thinking in terms of PMR radio or GSM phones. In response let's clear up a few things:

1. We don't use SMS - it's slow, unreliable and outrageously expense.
2. We don't use GSM phone dial-up - it's also slow and even more laughably expensive.
3. GPRS has oodles of available bandwidth, all over the country. It's designed for internet access & picture messaging after all.
4. Each GPRS user gets an equal slice of the bandwidth until the bandwidth gets used up, then big users get degraded.
5. The slice that Cordic requires is absolutely minute because we use short compressed data messages (less than 200 bytes).
6. GPRS beats PMR on speed, performance, price and range every way you look at it.
7. Our customers worked fine over Xmas, New Year and during the recent cold snap
8. Cordic are not network specific, so if you want to split your fleet 50/50 between O2 and Orange be our guest.

Hope this clears things up.

R.
Author:  Mr Hilter [ Thu Feb 12, 2004 8:43 pm ]
Post subject: 
3. GPRS has oodles of available bandwidth, all over the country. It's designed for internet access & picture messaging after all.

Oodles.. I guess we have nothing to worry about then. :oops:
Author:  Guest [ Tue Aug 24, 2004 1:35 pm ]
Post subject: 
Is not global positioning, using the satilite system, which is free for unlimited use?

God does that mean if if there is a world war I will have to close my taxi business because I will loose contact with my drivers and have to leave the wounded that have called me stranded?
Author:  sure I am being thick? [ Tue Aug 24, 2004 1:43 pm ]
Post subject:  oodles of noodles?
Band widths all over the country?

Had to look that word global up in the dictionary again, just in case I had got It wrong.

Maybe not Coric then Eh?
Author:  blobby [ Thu Sep 02, 2004 1:22 am ]
Post subject: 
Rob McCulloch wrote:

6. GPRS beats PMR on speed, performance, price and range every way you look at it.



Price? I dont think so !

Cordic

Five year period

100 vehicles * £7:50 per unit per week * 52 = £39000 * 3 = £195000
Internet connection + Quarterley Charges extra
Assuming software + computer hardware free not including voice calls but we will assume maybe free.
Total £195000


PMR Voice with Data

Three year period

100 vehicles * £500 (voice and data) £50000 one off payment.
Remote Base Stations £6000 one off payment.
Radio licence £1000 * 5 = £5000
Landline 5km £3000 *5 = £15000
Use of remote aerial site £2000 * 5 = £10000

Total £86000

Cordic advantages : Good Company - Sensible People - GPS - Navigation - National Coverage

Cordic Disadvantages : Network failure no backup - XDA battery goes flat you have to load software back on once charged - Very very desirable therefore stealable unit - easily dropped and damaged. Debatable use of Microsoft Mapppoint Software (read the EULA).

PMR + Data advantages : generally reliable - you are the master of your own system therefore can implement your own backup power systems etc. Data down fall back to voice. Voice down fall back to data. Both down use the wet piece of string hanging from the roof of your office with standby voice base transmitter.

PMR + Data disadvantages : Limited range (20 mile radius from reasonably high remote site) GPS expensive to implement.


Difference PMR £109000 less over 5 years + Cost savings keep rolling on the longer you use it. (work out the ten year figures for yourself)

XDA2 solutions look attractive because "it's only £7:50 per vehicle per week"
Author:  Guest [ Thu Sep 02, 2004 1:44 am ]
Post subject: 
yes Blobby that is right but I know one firm who will provide your programme free for base for 1 year but this 7.50 per car per week is still the price.

I guess its down to this, do you wish to move into the modern age or not if you do sign the dotted line if not then dont.

7.50 per week is a mere 0.0204918 per hour.
Author:  blobby [ Thu Sep 02, 2004 9:22 am ]
Post subject: 
Anonymous wrote:

7.50 per week is a mere 0.0204918 per hour.


Something I forgot to say is the unit still costs £7:50 per week if it sits on a shelf in your office. How many 100 car companies always have a full compliment of drivers.

My advice if you wish to embrace this technology is keep your existing voice radio infrastructure as backup. Charge drivers a returnable deposit to cover the cost of this equipment. Negotiate a no fee software deal for the office software with a sensible monthly maintainance fee. They will be making plenty of money out of the £7:50 per week to cover this freeby.
Author:  Yorkie [ Thu Sep 02, 2004 2:46 pm ]
Post subject: 
blobby wrote:
Anonymous wrote:

7.50 per week is a mere 0.0204918 per hour.


Something I forgot to say is the unit still costs £7:50 per week if it sits on a shelf in your office. How many 100 car companies always have a full compliment of drivers.

My advice if you wish to embrace this technology is keep your existing voice radio infrastructure as backup. Charge drivers a returnable deposit to cover the cost of this equipment. Negotiate a no fee software deal for the office software with a sensible monthly maintainance fee. They will be making plenty of money out of the £7:50 per week to cover this freeby.




Blobby mate
one of the benefits of the system is getting rid of radios that create so much inefficiency at the other end including stress related illnes

what joy to have a silent office automatic job up everytime you are clear instead of waiting for some dick using the radio.

get rid of the radio its backup you dont need,
Page 1 of 3 All times are UTC [ DST ]
Powered by phpBB® Forum Software © phpBB Group
http://www.phpbb.com/