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New members, (why even me in the beginning!) go nuts over technical jargon that they may not fully follow. I am posting this topic with a view to help them comprehend better and understand CDMA which I feel is not given due appreciation. Post the additional essential details here but lets spare the argument on GSM v/s CDMA Experienced members kindly view this as a venue to refresh and share updated info. CDMA operators in India CDMA (code division multiple access) is a digital mobile telephone standard which takes a different approach to the other, competing standards: GSM (Global System for Mobile Communications) and TDMA (Time Division Multiple Access). Where GSM and TDMA divide the available bandwidth into 'channels' using a combination of frequency bands and time-slices, CDMA spreads the signal over a wide bandwidth, identifying each channel using unique digital codes. This means it can provide greater bandwidth efficiency, and hence a greater potential number of channels. Traditional uses of spread spectrum are in military operations. Because of the wide bandwidth of a spread spectrum signal, it is very difficult to jam, difficult to interfere with, and difficult to identify. This is in contrast to technologies using a narrower bandwidth of frequencies. Since a wideband spread spectrum signal is very hard to detect, it appears as nothing more than a slight rise in the "noise floor" or interference level. With other technologies, the power of the signal is concentrated in a narrower band, which makes it easier to detect. The narrow band is also more prone to interference than the spread-spectrum of CDMA. Increased privacy is inherent in CDMA technology. CDMA phone calls will be secure from the casual eavesdropper since, unlike an analog conversation, a simple radio receiver will not be able to pick individual digital conversations out of the overall RF radiation in a frequency band. TDMA (time division multiple access) and GSM systems have to add an extra stage of encryption to the signal to ensure privacy, whereas encryption is inherent to the CDMA system. The 1× Evolution-Data Optimised, which is abbreviated as EV-DO or 1× EV-DO, is a wireless radio broadband data standard. It has been adopted by a number of CDMA mobile telecommunications service providers across the world, particularly in the USA, South Korea, Japan, eastern European countries, Australia, Canada, New Zealand and spreading in our very own India The technology was first standardised by 3GPP2 in 2000 as part of the CDMA2000 standards. Qualcomm started to develop EV-DO in 1999 in a bid to produce a 2Mbit/s downlink for stationary communications, according to the requirements of IMT-2000. Originally the DO of the standards acronym stood for 'data only'. However, after being ratified by the International Telecommunications Union (ITU), the 'O' was changed to 'optimised' since 'only' had negative connotations for marketing the technology. EV-DO technology is a direct evolution of the 1× (1×RTT) air interface standard, with its channels carrying data traffic only. HOW DOES IT MATCH UP? In comparison to GPRS and EDGE standards, which have been widely adopted by GSM networks, the 1× EV-DO capability of enabled CDMA2000 networks is much faster. It provides mobile devices (handsets and wireless modem air cards) with air interface speeds of up to 2.4576Mb/s with EV-DO Rev. 0 and even faster speeds of 3.1Mb/s with Rev. A (data only rev A, affectionately known as DORA). Only devices fitted with 1xEV-DO capable chipsets can take advantage of the higher speeds. High speed downlink packet access (HSDPA) is a rival technology for wide band code division multiple access (W-CDMA) networks. HSDPA has the advantage over EV-DO of being able to maintain voice and data channels simultaneously over a single pair of frequencies. The system has some real advantages over WiFi, including the fact that it is always on with seamless roaming. Additionally, the signal can travel on the same cell sites as mobile phones, can download and run video clips in real time, there is no 300ft range from the cell tower or 'hot spot' and there are not so many security issues. DEPLOYMENT AND TECHNOLOGY When deployed alongside a voice network, 1× EV-DO requires a separate radio channel of 1.25MHz. The first revision of the standard was 1x EV-DO Rev. 0 and this is now being superseded by 1× EV-DO Rev. A In addition to the increase in the maximum downlink rate from 2.4576Mb/s in Rev. 0 to 3.1Mb/s, EVDO Rev.A also has a 12-times improvement in the maximum uplink data rate, from .15Mb/s to 1.8Mb/s. EV-DO REVISION B Even Rev. A is now due to be superseded, with the wireless communications market constantly striving for better and faster services. 1× EV-DO Rev B (DORB) specifications have now been developed. EVDO Rev. B is the evolution of Rev. A and in addition to all that is provided in Rev A, provides additional enhancements such as: higher rates per carrier (up to 4.9Mbps on the downlink); higher rates by bundling multiple channels together (this can enhance user experience and enables new services such as high definition video streaming); reducing latency for services such as gaming and video telephony, due to statistical mutiplexing across channels and hybrid frequency re-use which reduces the interference from the adjacent sectors and improves the rates that can be offered especially to the users at the edge of the cell. Where EVDO isn't available, 2G/1xRTT data capability will be present and your EVDO modem or phone will automatically connect to it. While considerably slower than EVDO, 1x is a huge boon - if you find yourself in a remote location with no EVDO connectivity, you will still be able to remain connected! Commonly Used Abbreviations MIN - Mobile Identification Number ESN - Electronic Serial Number PRL - Preferred Roaming List SID - System Identification Number SCM - Station Class Mark CAI - Common Air Interface A Key - Authentication Key NAM - Numeric Assignment Module SPC - Service Programming Code Glossary BREW - is Qualcomm's open source application development platform for wireless devices equipped for CDMA technology. RUIM or R-UIM - is a transferable identification card for mobile phones that belong to the CDMA network. RUIM cards store personal information, including the name and account number, the cell phone number, as well as the contacts' names and numbers. The RUIM cards also store text messages and any other important phone settings. MEID - An ID number that is unique for each new CDMA mobile in the world. It identifies the phone to the network. MEID is a replacement for ESN. It began replacing ESN in 2005 since the pool of ESN numbers has been virtually exhausted due to the number of devices in use. It is equivalent to IMEI in GSM phones. ESN - An ESN is a numeric identifier that uniquely identifies a CDMA phone. The ESN is what a CDMA network uses to identify a phone and determine which subscriber's account, if any, it is linked to. Because of this, when switching from one phone to another, subscribers will have to provide the ESN of the new phone to the network carrier before it can be activated. The ESN is being phased out in favour of the MEID. This is happening because phone manufacturers are literally running out of ESN identifiers. OTA (Over-The-Air) - Any kind of event or transfer that takes place wirelessly using the cellular network as opposed to using a cable or other local connection. PRL - is a database residing in a wireless (primarily CDMA) device, such as a cellphone, that contains information used during the system selection and acquisition process. In the case of RUIM-based CDMA devices, the PRL resides on the RUIM. The PRL indicates which bands, sub bands and service provider identifiers will be scanned and in what priority order. Without a PRL, the device may not be able to roam, i.e. obtain service outside of the home area. Frequently Asked Questions : 1.How can I locate the ESN or MEID number on my phone? All mobile devices are identified by an Electronic Serial Number (ESN) or a Mobile Equipment Indentifier (MEID). Some devices may display the ESN or MEID under the battery, below the battery or on the back of the phone. Behind the Battery: Below the Battery: Back of the Phone: Below are examples of labels that can be found on devices supporting ESN numbers. As ESN Is an 11-digit Electronic Serial Number. An ESN in hexadecimal, or HEX, is represented by 8 characters that are numbers and letters. Below are examples of labels that can be found on devices that support MEID numbers. MEID is always hexadecimal, represented by 14 characters that are numbers and letters. The first digit is always A - F. NOTE: Don't confuse the letter O with the number 0 (zero). It is always a zero. Only letters A-F are in an ESN/MEID. Sourced info from the net and all recognition to them. Found this good report on the technical side of CDMA which you may find interesting. Some of the details provided may be obsolete as it was written a while ago, please verify the same. cdma.pdf Edit - Frequently Asked Questions

<< This service is not active anymore, so requests will NOT be accepted now. Please check: >> Ok guys... Now we are available here on RIMweb.in to provide the EVDO activation to Aam Admi who are unable to get it through the Reliance Contact Centre and/or Reliance Outlets. Following are the rules and regulations:- 1. EVDO Activation Request will be processed only for RIMweb.in Registered members having more than 10 posts. 2. Members need to send an email from the email address registered with your RIMweb.in profile with the following details to: evdo@rimweb.com or evdo@rimweb.in (please send to either one only and not both!!) RIMweb.in member username (this is the forum registration member profile username so that we can check your post count and NOT your full name) MDN - 10 Digit Number RSN - RSN Number of the handset/OMH Sim Card Handset - with model # Alternate Contact Number - Any Alternate Mobile Number to which a confirmatory call shall come from Mumbai Reliance Headquarters for EVDO Confirmation. 3. After sending the email the member will receive a confirmation email within the next 7 days. Members cannot make any irate demands for the activation of EVDO. We shall pick up the numbers once in a week for activation and the member should understand that it may take upto 10 days; though we will be trying to activate in 2-3 working days normally. 4. This activation procedure is meant for members who have purchased an EVDO handset along with OMH Sim Card (like Samsumg Galaxy POP, Corby, SCH 369, SCH 239, LG 510 Cookie, LG 235 etc.) from Reliance for which the EVDO parameters are already registered in OMH Sim Card with Reliance. The number/connection of the member should be on either an OMH SIM Card or a Non Sim handset which is having EVDO Facility and whose EVDO Parameters are also registered with Reliance. 5. An SMS will arrive on the member's handset regarding a request being registered at a Reliance Outlet and asking for overall experience. Member needs to either reply with "YES" or leave it. Please DO NOT reply with "NO". If we get a "NO" SMS from any member, then this project for EVDO Activation shall be closed immediately. And after getting EVDO Activated, Memeber may confirm us by posting here in this thread. Regards Amit Jain -------------------------------------------------------------------------------------------------------------------------------- Please Read This: How is EVDO activated on Reliance CDMA? There are two steps for EVDO Activation First, the parameters of EVDO should be registered for the handset in Reliance Server. In case of OMH SIM Card and Official Reliance BlackBerry having EVDO (BlackBerry 9630, 9650, 9230, Style etc.) and Official Reliance Non SIM EVDO Handsets (Like - Samsung Atlas, Coolpad N900), the parameters are already registered with Reliance. And in case of Imported handsets, you need to check whether your EVDO parameters are registered with Reliance or not. We are NOT here for REGISTERING THE EVDO PARAMATERS of imported handsets. Second step is after your EVDO Paramters are available in Reliance Server, EVDO won't start automatically. We have to submit request for EVDO; WE ARE HERE DOING THIS WORK ONLY in this thread. We have seen many members asking for help to do this as Customer Care is clueless about it and that is why we are helping here. Additional Notes: * Making EVDO work on imported handset requires programming the handset with necessary HSD PRL's, HSD username and password in addition to the handset parameters being registered in Reliance Servers. That is outside the scope of this initiative. You may contact your handset seller for necessary assistance to register EVDO parameters at Reliance and configure in your handset if your handset's MEID/ESN is registered with Reliance. * We can activate EVDO on BlackBerry handsets only if you have active BIS Service (CDMA) on the handset. In Case of BlackBerry handsets, member will not get any Service Request SMS. We will get EVDO activated on BlackBerry handsets directly from AAA Phongen Team. * To configure handset like Samsung Galaxy POP CDMA: Go to Setting > Wireless > Mobile Network > APN > Add new APN > Username = MDN (10 digit number) Password = MDN (10 digit number) Homepage – www.google.com Save it and then select it as default. You can use now as per your NetConnect Traiff plan You can change NetConnect plans by calling: 180030005555 All data plans available for Reliance Mobile CDMA can be found in this topic plan details.doc plan details_smaller_file.pdf

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No idea. You can contact Sapido India Office for confirmation on support@sapido.in or Tel: + 91-120-406-9722.