Samsung A727 - SGH Cell Phone 28 MB User Manual download pdf (Page 133)

GLOSSARY AND TROUBLESHOOTING GUIDE

CellDEK® User Manual 133

The storage capacity depends on the handset and SIM. The date and time of received messages is

generated by the network, all other date and time stamps are generated from the handset time.

The maximum character length is 160 per SMS. Some handsets allow longer messages to be

compiled and therefore are split into relevant parts when sent, these messages are known as

concatenated.

Deleted SMS (Short Message Service) - These are text messages that have been deleted from

the SIM card by the cellphone user. However, most mobile phones do not remove the message,

but mark the message to be overwritten by incoming messages from the network.

MMS (Multimedia Messaging Service) – A service which allows Multimedia messages to be sent

from one mobile to another via one or more call centres or network providers. A Multimedia

message is stored on the handset and can contain a combination of text, video clips, images and

sound clips.

ICCID (Integrated Circuit Card Identifier) - The serial number of the SIM card stored electronically

within the SIM. A similar number or shortened version is often found printed on the SIM card.

IMEI (International Mobile Equipment Identifier) - This is a unique number given to each

handset. This is usually printed somewhere on the handset, (typically in the battery compartment)

and stored electronically in the phone handset memory. It can be viewed typing *#06# on the

keypad.

PIN (Personal Identification Number) - The SIM card has been locked against unauthorized

access using the PIN number. When PIN security is activated, the correct PIN number must be

entered in order to use any of the features of the handset (make calls, access ADN etc.) The only

calls that can be made without a PIN are calls to the emergency services.

PUK (Personnel Unblocking Key) - If the PIN is unknown the PUK is used to unblock the SIM

card and enable a new PIN code to be entered.

MSISDN (Mobile Station ISDN Number) - This number is the standard international number used

to identify a given subscriber. However, the number stored in the MSISDN location on a SIM Card

can be changed without affecting the actual telephone number. Therefore, the MSISDN number

downloaded from the SIM card can only be used as an indicator.

IMSI (International Mobile Subscriber Identity) – This is a unique number allocated to each

mobile phone subscriber, stored electronically within the SIM Card. It is used by the network to look

up the telephone number associated to the SIM Card.

GSM (Global System for Mobile Communications) - a digital mobile telephone system that is

widely used in Europe and other parts of the world. GSM uses a variation of time division multiple

access (TDMA) and is the most widely used of the three digital wireless telephone technologies

(TDMA, GSM, and CDMA).

CDMA (Code Division Multiple Access) - refers to any of several protocols used in so-called

second-generation (2G) and third-generation (3G) wireless communications. As the term implies,

CDMA is a form of multiplexing, which allows numerous signals to occupy a single transmission

channel, optimizing the use of available bandwidth. The technology is used in ultra-high-frequency

(UHF) cellular telephone systems in the 800-MHz and 1.9-GHz bands.

TDMA (Time Division Multiple Access) - is a technology used in digital cellular telephone

communication that divides each cellular channel into three time slots in order to increase the

amount of data that can be carried.

Cluster The smallest block of memory in a drive that can be written to individually by the file

system.

Allocation table Table that keeps track of the contents of each cluster on the drive. The allocation

table is used to combine clusters in the correct order to construct the files in the file system.

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Samsung A727 - SGH Cell Phone 28 MB User Manual Page 133

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