Outside:

[ Line ] +

Phone Number

Inside—Ringing:

[ Intercom ] +

Extension Number

Inside—voice-signaling:

[ Intercom ] + [ * ] +

Extension Number

[ Intercom ] + [ * ] [ 7 ]

Making a Call

To call an outside party:

1.Press an idle (not lit) line button.

2.Lift the handset.

3.Dial the telephone number.

To call an inside party (another extension):

1.Press an idle (not lit)[ Intercom ] button.

2.Lift the handset.

3.To ring the extension, dial the two-digit extension number, (or to voice signal an MLS-model phone’s speaker, dial [ * ] plus the extension number).

NOTE: If you lift the handset without pressing a button, you get the first available line or the intercom, depending on your phone’s automatic line selection.

To page all extensions with MLS-model phones:

1.Press an idle (not lit) [ Intercom ] button.

2.Dial [ * ] [ 7 ] . When you hear a beep, speak into the handset.

Your voice is heard on all MLS phone speakers. If a user picks up, the page becomes an intercom call to that user.

Telephone or Extension Number + [ Conf ] + Telephone or Extension Number + [ Conf ]

To Drop:

[ Drop ] (MLS-18D, MLS-

12D, and MLS-12) or

[ Feature ] [ 0 ] [ 6 ](MLS-6 and MLC-6)

Making a Conference Call

To add parties to a call (max. 2 parties plus you):

1.Call the first party (can use Speed Dial or Auto Dial buttons).

2.After the first party answers, press [ Conf ] .

3.Press an idle line button and call the second party (or press

[ Intercom ] and dial an extension number to add an inside party).

4. After the second party answers, press [ Conf ] again.

You are connected with both parties. The lights at all extensions in the conference flash red and green.

To drop the last party added to the call:

On MLS-18D, MLS-12D, and MLS-12 phones: Press [ Drop ] .

On MLS-6 and MLC-6 phones: Press [ Feature ] [ 0 ] [ 6 ] .

NOTE: You cannot add more than 2 other parties, transfer a conference call, or join a conference call.

Putting a Call on Hold

To Hold:

To put an outside or intercom call on hold:

1. Press [ Hold ] .

[ Hold ]

To pick up a held call:

To Pick Up:

1. Press the held line button.

[ Line ]

2. Lift the handset.

 

 

 

[ Transfer ] +

Extension Number

Transferring a Call

To pass a call to another extension:

1.While active on the call, press [ Transfer ] .

The call is put on hold and you hear intercom dial tone.

2.Dial the extension to which you want the call transferred.

3.When someone answers, announce the call, then hang up.

If no one answers or the call is refused, to reconnect to the caller, press the line button next to the winking green light.

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AT&T MLS-18D, MLS-12D manual Making a Call, Making a Conference Call, Putting a Call on Hold, Transferring a Call

MLS-18D, MLS-12D specifications

The AT&T MLS-12 and MLS-12D are advanced mobile communication solutions designed to meet the demands of modern businesses and organizations. These systems are known for their robust performance and reliability, making them ideal for various sectors including public safety, transportation, and industrial applications.

One of the main features of the MLS-12 is its strong emphasis on voice clarity and audio quality. The system is integrated with cutting-edge noise reduction technologies that ensure clear communication even in noisy environments. This is particularly important for users operating in the field, where ambient noise can significantly impact radio communications.

The MLS-12D, on the other hand, enhances the capabilities of the standard MLS-12 by incorporating digital technologies that allow for advanced data services alongside voice communications. This dual functionality is critical in today's fast-paced environment, where instant access to information can streamline workflows and enhance decision-making processes. Users can send and receive text messages, access applications, and share data in real time, all while maintaining high-quality voice communications.

Both models feature an intuitive user interface designed for ease of operation, enabling quick access to essential functions. They are equipped with durable hardware built to withstand harsh conditions, ensuring operational reliability in environments where traditional communication systems may falter.

In terms of connectivity, the MLS series supports various frequency bands and communication protocols, making it versatile and compatible with multiple networks. This flexibility allows organizations to tailor their communication systems to fit unique operational requirements, further enhancing productivity.

Security is a significant concern in any communication system, and the AT&T MLS-12 and MLS-12D address this with advanced encryption technologies that safeguard voice and data transmissions. This feature is crucial for sectors that handle sensitive information, as it helps protect against unauthorized access and data breaches.

In conclusion, the AT&T MLS-12 and MLS-12D stand out as formidable choices for organizations looking to enhance their communication capabilities. With their emphasis on audio quality, advanced data services, user-friendly interfaces, robustness, and security, these devices are well-equipped to meet the evolving demands of modern communication in various industries.