Yosin Auto-Attendant System

Questions and Answers

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Jennifer CurryAug 16, 2025
Why is immediate conversation inaccessible on Yosin Auto-Attendant System?
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  Robert WareAug 16, 2025
  If immediate conversation is inaccessible on your Yosin Telephone System after the called party answers, this is normal while the EVM is waiting. To allow calls to go through Un-supervise Transfer, use the Pickup Code or ID Code. Alternatively, the EVM may not have finished Auto-configuration yet. In this case, dial three times for 'a busy extension' and 'an available extension (do not answer)'.
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David RiggsAug 19, 2025
How to fix Yosin Auto-Attendant System Telephone System EVM announcing faulty number when line is busy?
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  Cynthia BrownAug 19, 2025
  If the Yosin Telephone System EVM consistently announces that a dialed number is faulty when the line is busy, and vice versa, exchange the parameters for the Error tone with the Busy tone.
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desireesmithAug 23, 2025
Why does Yosin Auto-Attendant System EVM repeat 'Hold on, please' when call is on hold?
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  Betty PhamAug 23, 2025
  If your Yosin Telephone System EVM repeats "Hold on, please" every 4 seconds while the call is on hold, it could be due to: * The PABX Dial Tone frequency being outside the detection range (300 ~ 640 Hz). Set the system not to detect the frequency. This can also occur occasionally due to an insufficient DTMF Receiver for PABX.
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Jennifer CarlsonAug 27, 2025
How to stop Yosin Auto-Attendant System Telephone System from playing Leaving Message intermittently?
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  Veronica WilliamsAug 27, 2025
  If your Yosin Telephone System intermittently plays the Leaving Message of Mailbox, it indicates noise interference. If this issue persists, you can set “non-silent compression” to improve the situation. Be aware that doing so will decrease the voice capacity by 20%.
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Richard RobinsonAug 30, 2025
Why does Yosin Telephone System EVM repeat 'Hold on, please' when call is not on hold?
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  angela77Aug 30, 2025
  If the Yosin Telephone System EVM repeats the announcement "Hold on, please" every 4 seconds, even when the call is not actually on hold, the Hook-Flash time might be too short. This issue can also occur occasionally due to an insufficient DTMF Receiver for PABX.
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Carlos ClarkSep 3, 2025
Why does Yosin Auto-Attendant System disconnect after 'Hold on, please' announcement?
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  Julie SteeleSep 3, 2025
  If your Yosin Telephone System call gets disconnected after the "Hold on, please" announcement, the Hook-Flash time set under EVM is too long. If the Hook-Flash time is less than 0.13 seconds, EVM does not Auto-configuration, it must be entered manually.
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Dave Hudson MDSep 7, 2025
What to do if Yosin Auto-Attendant System EVM does not pick up calls?
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  harperlauraSep 7, 2025
  If the Yosin Telephone System EVM is not picking up calls, check the following: * If the POW lamp is not flashing, verify the power supply. * Check the wiring to ensure the incoming ringing is correct. * The PABX might have locked the extension port. If so, set the Port Auto-detection.
K
Katherine BrewerNov 11, 2025
Why is my Yosin Telephone System EVM not announcing busy or no answer?
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  Hannah RoblesNov 11, 2025
  If your Yosin Telephone System's EVM isn't announcing when a called line is busy or not answering, there could be several reasons: * The Call Progress Tone (CPT) might be delayed, or there's a reminder tone before the CPT. In this case, delay the detection of CPT. * The CPT frequency might be outside the detection range (300 ~ 640Hz). If so, select not to detect the CPT frequency. * The CPT may be irregular, so set a larger tolerance for CPT detection. * The CPT might be too weak, so set the detection sensitivity of internal CPT. Other potential causes include the Key Telephone system being set to Voice Call (change it to ringing), a required function code to retrieve the external line, or an incorrect retrieval procedure. Also, the Hook-Flash time may be either too short or too ...

Summary

System Layout

Multiple System Connection

Details on connecting multiple EVM units for expanded functionality.

Installation Procedure

Planning

Initial planning phase, including PABX schemes and user information forms.

Installation

Physical setup of the EVM unit, including power and line connections.

Go to the Program

Connecting a telephone to the PROG jack or dialing remotely to access the system.

Program Setting

Configuring system parameters like messages and data via menus.

Exit the Program

Procedure to exit the programming menu and return to the greeting.

Testing

Verifying system functionality by simulating call scenarios.

Copy To

Transferring recorded voice and data to other EVM units.

Final Step

Handing over system operation to the administrator.

System Program

Edit Extension Group and Backup

Setting up extension number groups and backup extensions.

Revise Waiting Time

Adjusting waiting and ring times for various functions.

Set Ring Times and Operator Code

Configuring ring parameters and operator access codes.

Set User Functions and Maintenance

Customizing user-specific functions and system maintenance.

Set PBX Operating Way

Defining how PBX functions operate, such as dialing methods.

Set Remote Control Password and Function Code

Managing remote access security and function codes.

Set PBX Timing

Configuring various timing parameters for PBX operations.

Access Administrator Program

Navigating to the administrator program menu.

Administrator Program

Convert Working and Closing Hours

Setting up operational hours, including breaks and holidays.

Edit Announcement

Recording and managing language prompts and system announcements.

Set Working Hours and System Clock

Synchronizing system clock and defining daily working hours.

Define Operator Number

Assigning specific extension numbers to operators.

Set Call Forward

Configuring rules for forwarding incoming calls.

Define Receptionist

Assigning specific menus to receptionist extensions.

Preset Holiday

Programming dates for national holidays for automatic system changes.

Setup Mailbox

Configuring mailbox capacity and initial access parameters.

Define List Number

Creating and managing lists of extensions for specific functions.

Mailbox Owner Program

Listen to Message

Accessing and listening to stored voice messages.

Outgoing Greeting Message

Recording personalized greeting messages for callers.

Revise Dont Disturb

Managing the 'Do Not Disturb' status for mailboxes.

Change Password

Updating the password for mailbox access.

Define Pager Number

Setting up pager notification for new messages.

Define External Telephone Number

Linking external phone numbers for specific functions.

Set Wakeup Time and Notification Interval

Configuring timed alerts and message notification periods.

Set Follow Me

Enabling the 'Follow Me' feature to redirect calls.

Identification Code

Setting ID Code

Configuring identification codes for routing calls based on PABX signals.

Message Notification

Message Lamp(ML) Notification

Setting up message indicator lights and internal ringing for notifications.

Internal Notification

Configuring retry times and intervals for internal message alerts.

Information Menus

Extension Number Inquiry

Example of setting up a menu for callers to inquire about extension numbers.

Reference Data for PBXs

User Information Form 1;2

A form for recording PBX and EVM configuration details.

This document outlines the installation and programming of the EVM2010A and EVM2006A Auto Attendant Systems. These systems are designed to manage incoming calls, providing automated responses, routing, and message handling capabilities.

Function Description

The EVM Auto Attendant System acts as a virtual receptionist, answering incoming calls and guiding callers through various options. Its core functions include:

Call Processing: The system answers calls and, based on various identifiers (No-answer ID, Line busy ID, or no ID code recognized), presents a greeting. Callers can then dial specific codes for different services.
Extension Dialing: Callers can dial an extension number directly. If the extension is busy or unanswered, the system can offer options like holding, transferring to a backup extension, or connecting to an operator.
Mailbox Access: Callers can leave messages in mailboxes. Mailbox owners can access their messages, manage outgoing greetings, set "Do Not Disturb" functions, change passwords, define pager and external telephone numbers for notification, set wake-up times, and configure "follow me" forwarding.
Information Menus: The system supports multi-level information menus, allowing callers to navigate through various departments or services by dialing specific numbers. Each menu can have a designated receptionist.
Operator Services: Callers can be directed to an operator at various points in the call flow, including during greetings, busy/no-answer prompts, or from information menus. The system supports different operator numbers for working hours, break hours, closing hours, and holidays.
Message Recording: The system allows for recording and customizing various voice messages, including greetings for different times of the day (working hours, break hours, closing hours, holidays), operator busy prompts, no-answer prompts, wrong number prompts, and temporary announcements.
Call Forwarding: Extensions can be configured to forward calls to other numbers.
Message Notification: The system can notify mailbox owners of new messages via Message Lamp (ML) notification, internal ringing, or external telephone numbers/pagers.
System Configuration: Administrators can configure system-wide parameters, including working hours, system date and time, operator numbers, call forwarding rules, receptionist numbers for information menus, holiday schedules, mailbox capacities, and internal dialing lists.
Multi-System Connection: Multiple EVM units can be connected using an "8 wires cable" for data transmission and power source multi-connection, allowing for system expansion and data synchronization.

Important Technical Specifications

While specific numerical values for all technical specifications are not explicitly detailed, the manual provides insights into various configurable parameters:

Recording Time: Maximum recording time for a message is configurable (e.g., 60 seconds).
Ring Duration: Operator and extension ring durations are configurable for both working and closing hours (e.g., 20 seconds).
Retry Times: Retry times for external notification, pager notification, and internal notification are configurable (e.g., 2 times).
Tone Detection: Parameters for Call Progress Tone (CPT) detection (RingBack Tone, Busy Tone, Hook-Flash time, Error Tone) are configurable, including sensitivity and delay. The system supports auto-configuration for these tones.
Dialing Way: Supports touch tone (with configurable output and pause durations) and dial pulse.
Hook Flash: Configurable hook flash duration (e.g., 0.13 seconds for auto-configuration).
Message Lamp (ML) Notification: Supports various operating routes for ML-ON and ML-OFF, including hook-flash, extension number, and function codes.
Information Menu Levels: EVM2010A supports 4 levels and 256 sections of menus (EVM2004 supports 9 menus).
Mailbox Capacity: Recommended mailbox capacity is 32, with configurable language type.
Waiting Time for ID Code: Configurable waiting time for PABX ID Code transmission (e.g., 1 second, 1.5 seconds, 2 seconds).
Power Supply: Requires a 13VDC adapter. A 0.5A power adapter can supply up to two units, and a backup battery (12V/7AH) can supply up to six units in a multi-connection setup.

Usage Features

On-site Programming: A standard telephone set can be connected to the PROG jack for on-site programming.
Remote Programming: The system can be programmed remotely by dialing in from an external or PABX internal line and entering a system password.
User-Friendly Interface: The programming interface is menu-driven, guiding users through options with voice prompts.
Password Protection: System, Administrator, and Mailbox Owner programs are password-protected.
Data Transmission: Recorded voice messages and data can be transmitted to other EVM units in a multi-connection setup.
Holiday Presets: Up to 64 national holidays can be preset.
Language Support: Supports multiple languages for greetings and information menus.
Auto-Switching: The system can automatically switch between working hours, break hours, closing hours, and holiday announcements.
Statistical Report: Provides a statistical report of calls, including incoming calls, information menu usage, extension busy, extension no-answer, and operator busy.

Maintenance Features

Troubleshooting Guide: The manual includes a comprehensive troubleshooting section to address common issues such as intermittent "Leaving Message" playback, EVM not picking up calls, incorrect ID code recognition, repeated announcements, and tone detection problems.
System Reset: Specific program settings (e.g., SYS_1_00_0) allow for resetting the entire program to default, deleting operator numbers, pre-set holidays, recorded prompts, information menu messages, forwarding numbers, and receptionists.
Call Progress Tone (CPT) Auto-configuration Recovery: The system can recover CPT parameters to auto-configuration settings.
DTMF Receiver Optimization: Suggestions for improving DTMF Receiver performance in PABX systems are provided, including increasing DTMF Receiver installation, setting program for Dial Pulse (DP) Transmission, and dispersing EVM extension lines across multiple interface cards.
PABX Reference Data: A table provides reference data for various PABX systems, outlining recommended operating ways and function codes for integration.
User Information Form: A form is provided to record system settings, including company details, PABX information, main data (dial tone detection, frequency detection, call transfer codes, retrieving call codes, ID codes, ML-ON/OFF codes, suffix codes, pickup operating way, function codes for intercom), information menu details, working hours, extension number groups, and forwarding numbers.