SIM application toolkit

•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 when an SMS mes- sage is forwarded from the SMS-C to a Mobile Sta- tion. When the Mobile Station receives the message, it returns a delivery report saying the transfer was successful.

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Fixed dialling and Restricted calls

For a company or an organization, it can be useful to restrict phone calls. Fixed Dialling 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 Dialling makes use of the PIN2, and it 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.

The SIM Application Toolkit (SIM AT) is a smart card-centric method of deploying programs that apply only to GSM and to SMS and USSD trans- ports. Programs must be distributed on smart cards. For an operator, a company or service pro- vider, SIM AT offers a powerful way to deploy pro- grams and services to users, without the need for new or upgraded equipment. All necessary setup and programming is distributed to users over the air, directly to their phones. In the Z600, a separate menu is available for functions residing on the SIM card. These can include submenus for controlling functions, and also functions which allow the phone to initiate calls, send data, and display infor- mation to the user.

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Z600 specifications

The Tannoy Z600 is a remarkable loudspeaker that embodies the company’s commitment to high-performance audio, blending classic craftsmanship with innovative technologies. Designed for both professional and home listening environments, the Z600 serves as an exemplary model in Tannoy’s extensive range of audio solutions.

One of the standout features of the Z600 is its dual-concentric driver design. This technology has been a hallmark of Tannoy's engineering for decades, ensuring that sound is emitted from a single point source. This results in an incredibly coherent soundstage with exceptional imaging, allowing listeners to experience audio with a sense of depth and clarity that is often absent in traditional speaker designs.

The Z600 further enhances its audio reproduction capabilities through the use of high-quality drivers. It houses a 6.5-inch bass driver paired with a 1-inch high-frequency driver. The combination enables the speaker to handle a wide frequency range, delivering rich bass tones while maintaining crystal clear highs. The speaker's crossover design is meticulously crafted to ensure seamless integration between the bass and treble drivers, which contributes to a balanced and natural sound signature.

Equipped with a robust MDF cabinet, the Z600 is designed to minimize unwanted resonances and provide a solid base for sound reproduction. The cabinet's architecture is complemented by a stylish finish, available in various veneers, allowing it to blend well with any modern or classic décor.

Installation options are versatile, featuring bi-wiring capabilities that enhance the speaker's performance. This feature allows for separate connections to the bass and treble drivers, optimizing audio quality and enabling advanced customization based on user preference.

Another notable characteristic of the Tannoy Z600 is its wide dispersion pattern. This attribute ensures that sound remains consistent and clear even when listening from different positions in the room. This makes the Z600 an excellent choice for both casual listening and critical monitoring in professional setups.

With its combination of innovative technologies, premium materials, and expert craftsmanship, the Tannoy Z600 stands out as a top-tier choice for audio enthusiasts. Whether for home entertainment or studio monitoring, it offers a listening experience that is both engaging and immersive, making it a worthy addition to any audio system.