Sony Ericsson T226 manual Network-dependent features, SMS and EMS messaging

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Network-dependent features

SMS and EMS messaging

The T226 is capable of sending and receiving SMS and EMS messages, and linked messages.

•With the Short Messaging Service, a user can send text messages containing up to 160 char- acters to and from GSM mobile stations

•With the linked SMS, the user can link up to 10 SMS messages together to create a longer mes- sage (network-dependent service)

A Service Center (SC) acts as a a storage and forwarding center. SMS consists of two basic services:

•Mobile Originated SMS

•Mobile Terminated SMS

For Mobile Originated SMS, an SMS message is sent from a Mobile Station to the SMS-C where it is forwarded to its destination. This can be another Mobile Station, or a terminal in the fixed network.

A Mobile Terminated SMS is delivered when an SMS message is forwarded from the SMS-C to a Mobile Station. When the Mobile Station receives the message, it returns a delivery report saying the transfer was successful.

Fixed dialing and Restricted calls

For a company or an organization, it can be useful to restrict phone calls. Fixed dialing allows the user to preset a number of digits, for example area codes. This restricts the user to making calls only to numbers which use the preset digits as leading digits. Fixed dialing makes use of the PIN2, and requires fixed dial fields on the SIM card.

The Restrict calls service allows the user to block outgoing or incoming calls in certain situations, for example international calls.

TTY

TTY (Text Telephony) refers to the capability for hearing impaired people to trasmit and receive text messages using teletype devices (TTY devices). These devices are composed of a keyboard, display, and modem that transforms typed characters into TTY signals to be transferred over the phone network. The standard TTY signal in the U.S. is a 45.45 bit/s FSK signal called Baudot. Traditionally, TTY users have communicated over the analog PSTN network. In the U.S., however, the FCC mandated that as of June 30, 2002 digital mobile systems should also support TTY for emergency 911 calls. Unfortunately, the integrity of Baudot decreases in poor radio conditions, due to

T226 White Paper

July 2003 (Rev C)

signal compression. To get around this problem, the GSM standards body adopted a more robust modem signal called CTM (cellular text modem), as described in 3 GPP TS 26.226 “Cellular Text Modem; General Description”. According to the standard, the Baudot signal gets converted to CTM, and it is the CTM signal that gets transmitted over the air. In the infrastructure side, a CTM node converts CTM back to Baudot (or vice versa).

CTM/Baudot conversion on the T226 side takes place in an accessory that interfaces between the T226 (with TTY enabled) and the user’s TTY device.

EOTD

EOTD is part of the GSM R99 location services. The T226 supports EOTD to satisfy the FCC E911 positioning requirements. Although EOTD is supported, it may not be enabled.

EOTD determines position of the mobile phone by measuring the signal propagation delay between the phone and multiple base stations. The mobile phone knows which BTS’s to measure against based on assistance data contained in the Measure Position Request received from the network. Some BTS’s may even be below the reference sensitivity of the mobile phone (-110 dBm). Since neither the phone nor BTS has knowledge of absolute time, the mobile phone measures time delay by looking at the burst arrival time differences between each BTS and a reference BTS. This time difference is known as the observed time difference value (OTD). The BTS’s are not synchronized in a typical network, and suffer from clock drift. A special device in the network, known as an LMU, is used to measure the Real Time Difference (RTD) between each BTS and the reference BTS. The network takes the OTD values from the mobile phone, interpolates the RTD from the LMU at the measurement time (the LMU typically only measures each BTS once per minute), and uses the known location and height of each BTS to calculate the phone position. Because the network calculates the position of the mobile phone, the term “MS-assisted” positioning is used.

The T226 supports Network Induced Location Request (NI-LR) which means that the T226 will calculate OTD values when it receives a Measure Position Request from the network during emergency calls.

AMR

The T226 supports the Adapative Multi-Rate (AMR) speech codec, which is a GSM speech service specified in Release 98/99. AMR is significantly different from the existing GSM speech codecs (FR,

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Contents T226 Contents T226 White Paper July 2003 Rev. C Purpose of this document PrefaceMultimedia Messaging Digital greetings Key functions and featuresPolyphonic ring signals Product overviewMore in-phone functions Mobile chat Sleep ModePredictive Text Input Software Memory managementMultimedia in the T226 Templates MMS Multimedia Messaging ServiceMMS objects TextPIM communication with MMS BenefitsPictures and themes Smil presentationsArchitecture MMS technical featuresOTA configuration Message conversionEMS Enhanced Messaging Service EMS more than just wordsNew possibilities with messaging Compatible with SMS standards Examples of EMS contents and applicationsUsing Web, WAP and SMS for download Using WAP in the T226 WAP servicesGprs access Bearer type characteristicsGateway characteristics Security using WAPCertificates Configuration of WAP settingsPush services Over-the-air provisioning of WAP settingsData connections Service Indication SIService Loading SL Mobile InternetGeneral Packet Radio Services Using Gprs with the T226 has several advantages, for example Using Gprs in the T226T226 White Paper July 2003 Rev C AMR In-phone functions and featuresCSS XL, CF, PB SMS TBDAMR Network-dependent features SMS and EMS messagingFixed dialing and Restricted calls T226 White Paper July 2003 Rev C SIM AT services supported by the T226 Service Mode Support T226SIM application toolkit Service Mode Support T226 Send Short Message ‘Key’ responses‘ User interaction with SIM AT‘Key’ responses MMI Maximum Response lengthsFeature Support in the T226 for m-commerce Security and M-commerce technical dataTerminology and abbreviations Micro browser GatewayGSM system ImageVCard Service providerWAP service SIM cardWMLScript Trademarks and acknowledgements Related informationDocuments LinksTechnical specifications General technical dataExterior description Embedded games Ambient temperaturesSupported Man-Machine Interface MMI languages Current consumption, talk and standby timesTechnical platform information Feature Support in the T226Downloadable games Speech codingCell broadcast service Short Messaging ServiceFull rate AFS Half rate AHS Feature Support in the T226 Feature Support in the T226 Enhanced Messaging Service Multimedia Messaging Service AMR, AAC Performance and technical characteristicsGmsk WAP browser technical dataFeature Support in the T226 WAP browser TdmaHtml WAP operator technical dataFeature Support in the T226 for WAP WAP Browser WAPTechnologies Feature Support in the T226 for WAPSecurity mechanism Additional provisioningUser agent profile Content typesMan Machine Interface SecurityWAP solutions FeaturesObject formats Gprs technical data NOM I, IINC0 SIM Email client technical dataFeature Support in the T226 email client GEA1Ussd technical data Image format technical dataImages downloading to phone JPG Commerce technical dataMMS GIF WBMP, JPGFeature Support in the T226 for m-commerce T226 White Paper July 2003 Rev C Eotd IndexNumerics EMST226 White Paper July 2003 Rev C

T226 specifications

The Sony Ericsson T226 was a compact and stylish mobile phone introduced in the early 2000s, showcasing the innovative spirit of the collaboration between Sony and Ericsson. Renowned for its user-friendly design and functional capabilities, the T226 made a lasting impression in the market, appealing to a wide audience seeking an efficient communication tool.

One of the defining features of the Sony Ericsson T226 was its sleek and lightweight form factor. Weighing just 80 grams and measuring 100 x 44 x 19 mm, this phone was incredibly portable, making it easy to carry and navigate. Its vibrant, 256-color display offered a resolution of 128 x 160 pixels, allowing for clear visibility of text and graphics, which was quite impressive for its time.

The T226 was equipped with essential features such as SMS and MMS messaging, enabling users to send text and multimedia messages. This was a key aspect of mobile communication during the early 2000s, and the T226 catered to this demand. Additionally, it supported polyphonic ringtones, offering users the ability to personalize their mobile experience with customized sounds.

For connectivity, the Sony Ericsson T226 featured GPRS support, facilitating data transfer for web browsing and email access. While web capabilities were limited compared to modern standards, the inclusion of GPRS was a significant advancement for mobile technology of that era. The phone also provided a basic suite of entertainment options, including a selection of pre-installed games, which added to its appeal for younger users.

In terms of battery life, the T226 was powered by a standard lithium-ion battery, providing up to 400 hours of standby time and around 9 hours of talk time. This longevity made it a reliable choice for those who needed consistent communication throughout the day.

The design of the T226 was enhanced by its colorful exterior options, which included vibrant hues appealing to a youthful market. This device not only fulfilled the need for communication but also served as a fashion accessory, reflecting the user's personality.

In conclusion, the Sony Ericsson T226 was a noteworthy mobile phone that combined style, functionality, and user-friendly features. Its compact design, messaging capabilities, and battery efficiency made it a popular choice during the era of early mobile communications. As one of the many successful products from the Sony Ericsson partnership, the T226 remains a nostalgic representation of early mobile technology.
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