QXISDN4+ IP PBX

QXISDN4 Gateway

Product Overview

The QXIDN4+ IP PBX is a full-featured IP PBX and is designed for offices with as many as 48 users. The QXIDN4+ can support up to 48 IP devices and 16 concurrent calls. SIP trunking allows for the QXIDN4+ to connect directly to an ITSP with no additional equipment. The QXIDN4+ includes a firewall and SIP Intrusion Detection for optimal security.

The QXISDN4+ activation license key is available to purchase for the QXISDN4. Once the activation license key has been installed and activated, the Gateway will function as an IP PBX and cannot be changed back. The QXISDN4+ doesn’t support Audio In, Audio Out and an SD card.

QXISDN4+Datasheet

Key Facts

Interconnection with  QX Gateways
IP phones 16
Additional IP phones with keys 32
Total phones 48
Concurrent calls 16
ISDN BRI ports 4
Ethernet LAN port (10/100/1000) 1
Ethernet WAN port (10/100/1000) 1
GATEWAYS Recommended Number (max)
QXFXO4 4
QXISDN4 2
QXE1T1 1
QXFXS24 2

All products are guaranteed a One Year Warranty and a Two Year Warranty for European Union customers. An additional Three Year Warranty is available for purchase. Click here for more information about our product support and warranties.

NOTE: Customers can still purchase licenses for older Quadro products that are no longer available for sale.

Features Included with Your QX IP PBX

The following is the list for group of features available for free on your QX IP PBX product.

Automatic Backup/Download of QX Configuration
This feature automates scheduled backups of QX configurations, saving them to designated locations or sending them via email.
 Automatic Firmware Updates for Installed IP Phones
This feature allows your QX to identify the firmware on each installed IP phone and automatically load the proper firmware updates.
 Automatic QX Firmware Update
This feature provides automatic notification or firmware update when the QX IP PBX new SW becomes available on the Epygi Support Portal.
 Daylight Savings Time Adjustment
This feature allows your QX IP PBX to adjust for daylight saving time automatically.
 Custom Language Pack Support
Your system’s voice prompts, the QX, and the supported phones’ GUI pages can be configured to fit a variety of different downloaded languages.
 Customizing the System Voice Messages
You have the flexibility to customize system voice messages either for specific extensions (user and auto-attendant extensions) or for all user extensions on QX simultaneously. There are several methods available for customizing these messages: you can upload a previously recorded file in the designated WEB configuration page, record a new voice message directly on the phone using the Voice Mail Service (VMS), or create a new message on the IP phone using the Record from Extension service, which is accessible for extensions.
IP Phone Plug-and-Play
Plug-and-Play allows the list of supported IP phones to automatically acquire an extension and an IP line on the system and auto-configure without you having to intervene.
QXFXO4, QXE1T1, and QXFXS24 Gateways Auto Configuration
The Auto Configuration allows your QX IP PBX to detect and automatically configure ports added via the QXFXO4, QXE1T1 and QXFXS24 Gateways. The new ports appear in the IP PBX’s Graphical User Interface (GUI).
 Enhanced System Logging Support
The QX IP PBX’s Graphical User Interface (GUI) has extensive logging utilities to assist in gathering information for problem resolution.
 Remote IP Phone Support
You can access all features of the QX IP PBX remotely, just as if you were physically present in the office.
 User Right Management
This is a valuable tool for QX administrators, enabling them to define specific restrictions for certain PBX users when managing the QX configuration. This service empowers administrators to control GUI access, granting or denying permissions to various Web GUI configuration pages for different users.
 Voicemail Setup via Phone
This feature allows the voice-enabled wizard to guide you through setting up your personal recorded username, password, and voicemail greeting per extension.

Auto Attendant with Standard and Customizable Scenarios
This Interactive Voice Response (IVR) system replaces a human operator and directs calls to the appropriate extensions or voice mailboxes. It engages callers through pre-recorded or synthesized audio prompts.
 Call History for the Auto Attendant Custom Scenario
Input choices configured within auto attendant custom scenarios, selected by external callers as they navigate these scenarios, are recorded and stored as historical data. This information can be retrieved, processed, exported as XML files, and analyzed. This analysis helps evaluate the effectiveness of the pre-configured custom scenarios, allowing for informed decisions and improvements if needed.
 Call Hunting
This ensures that incoming calls are directed to multiple extensions in sequence, enabling the call to be answered promptly by the first available person.
 Simultaneous Ring
This feature allows incoming calls to ring simultaneously with several extensions so that the first available person can answer the call.
 Call Pickup
This allows you to define pickup groups by grouping extensions. Any phone in the building can answer a call ringing on another extension within the designated pickup group.
 Call Queue
This feature enables incoming callers to be placed in a queue where they can listen to a personalized recorded message. If unanswered within the specified timeframe, the caller can be directed to voicemail or redirected to another extension, ensuring efficient call management.
 Extension Status
This allows a receptionist’s phone to monitor multiple managers’ phones and provide information on the extension’s status – off-hook, on-hook, or ringing.
 Hot Desking
Hot Desking is perfect for offices with multiple employees who use a shared physical phone at different times. It allows them to log in to the handset and use it as their personalized extension, enhancing flexibility and workspace efficiency.
 Multi-Company Receptionist
Enables one receptionist to handle calls from designated numbers, each associated with a specific company. This efficient setup not only saves time but also optimizes your budget effectively.
 Emergency Interrupt
Emergency Interrupt enables the immediate interruption of active calls, establishing a direct connection to the called extension in emergency situations.

Call Hold
Call Hold keeps one line “off hook” and connected while you make or receive a call on another line. You also have the ability to take the original call off hold and resume the conversation.
Call Park
Call Park allows putting the call on hold at a specific Call Park extension number to be resumed by someone on another phone. That person can pick up the call by keying the Call Park extension number. If no one is available to take the call at the other location, it will “ring back” to the original extension alerting the person who originally parked the call.
Call Park on the Auto Attendant
Call Park on the Auto Attendant supporting both Park and Page. To automatically answer the call from an external caller, park it on a free Call Park extension within the specified group of Call Park extensions, and page a paging group announcing there is a call to pick up. Ideal for retail stores.
Call Transfer
Call Transfer enables you to forward the active calls to another destination.
Call Waiting
Call Waiting alerts you that you have an incoming call on an engaged line, allows you to hold your current call, take the second call and gives you the ability to switch back to the original caller.
Three-Way Conferencing
Three-Way Conferencing allows the caller and two other parties to speak together on one connection.
Emergency Interrupt
Emergency Interrupt allows to interrupt the active calls and connect directly to called extension in case of emergency.
Scheduling
Scheduling feature allows controlling the call routing rules and auto attendant scenarios automatically based on the preconfigured weekly schedules of working and non-working hours.

Call Blocking
This prevents calls from specific numbers from getting through, enabling you to avoid unwanted callers.
Direct Transfer to a Voice Mailbox
This enables callers to be directly transferred to another extension’s voicemail.
 Distinctive Ringing
This lets you customize ring tones for identified callers and categorize calls to specific lines (service, sales, or billing).
 Do Not Disturb
Redirects all incoming calls to your voicemail through the PBX, ensuring your phone won’t ring during the specified timeout.
 Hiding Caller ID
Blocks your phone number from being identified by the call’s recipient.

Auto Redial
Callers who get a busy signal will be alerted if the line they are calling becomes available during a specified period of time. You only need to pick up the phone to be connected to the number you were trying to reach.
Call Paging
Call paging allows you to dial into the overhead or external speakers of telephones in order to make voice announcements. We can do multicast paging groups and store and forward paging.
Park and Page
Park and Page to automatically receive a call, park it on a free group park extension and page a paging group. Ideal for retail stores.
Parent/Child Extension configuration
Parent/Child Extension configuration allows the creation of child extensions tied to a parent. Regarding the inbound/outbound calls the groups of parent/child extensions work as one extension on multiple devices. Child extensions do not use an IP line on the PBX. Ideal to use with eQall softphone.
Phone Book
Phone Book provides users with the ability to scroll through a company’s Global Contact Directory on the phone and dial the desired extension easily.
Intercom
Intercom allows for room-to-room communication via telephone sets with auto-answer on the called telephone.
Speed Dial
Speed Dial gives you the ability to “save” frequently called numbers so that they can be easily dialed on your extension with an assigned shortcut of digits.
Global Speed Dial Directory
Global Speed Dial Directory in addition to personal speed dialing codes for individual extensions, supports speed dialing codes shared between all extensions on the PBX.
Alarm
This feature allows setting an alarm call one time only or repeatedly for the desired days in a week. The alarm call will be activated automatically by the pre-configured date/time with a precision of up to seconds. You can use your own alarm message, by uploading it as a file or record it from the phone.
Dial & Announce
Dial & Announce supports calls simultaneously to the predefined list of destinations. When answering the call, the uploaded as a file or recorded from the phone audio message will be played to the receiver. The Dial & Announce calls can be activated automatically by schedule or triggered by a call to the extension which is configured with Dial & Announce service.
Emergency Interrupt
Emergency Interrupt is used to interrupt the active calls and connect directly to called party in case of an emergency.
Authorized Phones
The Authorized Phones service is used to define the list of trusted external users, allows accessing the auto-attendant Call Relay menu automatically by recognizing the originators’ Caller ID. When adding an authorized phone number to the list, select a QX extension for login. Calling the auto attendant, the trusted users’ Caller ID will be recognized and the caller will automatically be logged in to the Call Relay menu. The Caller ID will be associated with the extension in the Login Extension field and as such the caller will bypass the usual prompt to enter the extension and extension password.
Callback on Auto Attendant
Authorized callers can initiate Callback by dialing the Auto Attendant and hanging up the call during the specified time out, without waiting for the Auto Attendant prompt. QX will call back to the authorized phone number and play the Auto Attendant prompts when answered. At this point, all Auto Attendant services, like connection menu, Remote Access Menu, Call Relay Menu are available to the authorized caller. This allows authorized callers to save calling charges when using the Call Relay or other Auto Attendant services on the QX.
Click To Call Chrome extension
Epygi’s Click To Call Chrome extension is used for making one-click calls via QX to phone numbers shown on the web pages. The Chrome extension detects the phone numbers on the web page and as soon as the user hovers over one of them, a callout pops up with the detected phone number and the “Call” icon.
WebRTC Click2Call
WebRTC Click2Call feature is available on the QX3000, QX5000 and ecQX. Is used to make WebRTC calls from a web browser having WebRTC support to QX extensions or to destinations, which are external to QX.
Customizing the System Voice Messages
The system voice messages can be customized either for the selected extensions (user and auto-attendant extensions) or for all user extensions on QX at once. The following methods are available for customizing the system voice messages on QX: upload an earlier recorded file in the appropriate WEB configuration page, record a new voice message on the phone by using the appropriate option in the Voice Mail Service (VMS), or record a new voice message on the IP phone by using the Record from Extension service available for extensions.
Receptionist Phone Configuration Wizard
The Receptionist Phone Configuration Wizard allows configuring a new receptionist. Applicable to most of the Epygi supported IP phones.
Scheduling
Scheduling feature allows controlling the call routing rules and auto attendant scenarios automatically based on the preconfigured weekly schedules of working/non-working hours.
Hot Desking
Hot Desking is ideal for an office with multiple workers using a single physical phone at different time frames to log in to the handset and use it as their own extension.
Hold Music
Hold Music (“.WAV” and “.MP3” Files Upload) allows callers to hear music or a recorded message while on hold or waiting for other participants to arrive on a conference call.
IP Phones Logo
IP Phones Logo is used to upload a custom logo for the IP phones. The uploaded custom logo will be visible on the display of the IP phone.

Call Alert
Call Alert is used to notify the designated personnel about the emergency calls, as well as calls through certain call routing rules. The following information will be included in the notification: the routing pattern, the extension who placed the call, the dialed number and the call Date/Time. The notifications can be generated and displayed in the System Events, sent via E-mail, via SMS, or left as voice mail on the defined extension(s) with a voice message.
Call History
Call History gives you the ability to track and report call details (caller, call recipient, length of call, call cost, call quality etc.) on incoming and outgoing calls per extension.
Dial Plans
Dial Plans (Call Routing) allows calls to travel through a network along a pre-determined path to the end-user. This feature helps determine the least expensive way and/or least congested path to route a call. Incoming calls can also be grouped according to area code and routed to specific customer service reps who manage different geographic regions.
Class of Service
Class of Service can be used to define the permissions that PBX extensions will have when using certain call routing rules to make calls. An extension will only be allowed to use the call routing rules that have a matching Class of Service designation.
Date/Time Settings
Date/Time Settings in the call routing table allowing to secure Call Routing rules by limiting their availability for a certain time frame. When the caller attempts to use the specific Call Routing rule outside of the configured time frame, he/she will be denied access.
Time of Day Dialing
Time of Day Dialing makes it possible for calls to be routed according to the time of day. This enables you to pre-select where a call will be directed in regards to time.
PIN Barring
PIN Barring feature allows to assign and manage credits on the PIN codes configured in the QX Local AAA table. The assigned credits will be spent if the authentication by PIN option is used when making calls through call routing rules with Call Rate Settings enabled. PIN codes, which have no credits assigned cannot use the routing rules with Call Rate Settings enabled. Similar to the case where the calling credits are assigned to the QX extensions, the PIN barring feature calculates the call cost per minute and per second. Once the available credits assigned to the PIN are completely spent, placing new calls through the toll routing rules will not be possible until the available credit balance is updated, either manually or automatically. For user convenience the automatic credit balance update for PIN codes can be scheduled daily, weekly or monthly.
Overall Call Duration Limit
You may also secure Call Routing rules by putting a limit on the overall call duration for selected Call Routing rules. The duration limit can be set to limit the total duration for all calls for a specified time, such as daily.
Hot Desking
Allows an office with multiple workers using a single physical phone at different time frames to log in to the handset and use it as their own extension.

This feature allows on-hold party to listen to music streamed by the Epygi Media Streamer, which has the ability to play MP3 files instead of the pre-recorded voice stored on your QX. This feature gives you the ability to play different streams for each extension, to play very long audio files and allows the playlist selection to be easily changed.

Hold Music (“.WAV” and “.MP3” Files Upload)
The Hold Music feature allows callers to hear music or a recorded message while on hold or waiting for other participants to arrive on a conference call.
T.38 Fax, Fax Relay and Clear Channel Fax
The T.38 fax relay standard permits faxes to be transported across IP networks between existing fax terminals. A clear channel gives full use of the bandwidth for this purpose.

The HotCall Add-In application works with Microsoft Outlook allowing incoming and outgoing calls to be made within the native Outlook interface.

HotKeyCall is a Microsoft Windows software application, which allows PC users to dial telephone numbers directly from their desktop on any application window (e.g. web-browsers, e-mail client, text documents, etc.). This can be done by simply highlighting the number you wish to dial and pressing a predefined hotkey sequence (e.g. Ctrl-Y).

System Security Software
The System Security Software feature protects your IP PBX against external hackers, who could have the ability to reconfigure your system through eavesdropping, Denial of Service (DoS) or Theft of Service (ToS). Not only does the software prevent the above through internal protections, but each line also has the ability to be password protected through the security system.
Firewall
Firewall is a security service configurable through various criteria. It has three levels of security policies: low, medium and high. The Firewall allows or blocks traffic based on the policies, services and/or IP addresses. Filtering rules will take effect only if the Firewall has been enabled and are independent of the selected firewall security level. Additional service-based rules can be added.
System Security Diagnostics
System Security Diagnostics allows running the security audit and getting the security reports. The Security Audit generates warnings regarding the system’s weaknesses. The warnings may vary depending on the selected global Security Level. The Security Audit will detect security-related configuration issues in the Firewall, IDS, IP Line passwords, Call Routing and extension settings.
SIP IDS
SIP IDS allowing to prevent the SIP attacks.
Securing Calls on Auto Attendant
The auto-attendant has a digit-parsing feature that can be enabled/disabled. This option can provide a lot of flexibility and dialing options for customers but it should be used with care. When the digit-parsing feature is enabled, all digits dialed by the caller while listening to the auto-attendant prompt will be sent directly to the Call Routing table to resolve the intended destination. With this option enabled the entries in the Call Routing table need to be properly secured.
User Rights Management
User rights management is useful to the QX administrator in order to set the restrictions for certain PBX users to manage the QX configuration. It allows to set restrictions on the GUI access for various PBX users, permits or denies access to certain Web GUI configuration pages.
Class of Service
Class of Service can be used to define the permissions that PBX extensions will have when using certain call routing rules to make calls. An extension will only be allowed to use the call routing rules that have a matching Class of Service designation.
Date/Time Settings
Date/Time Settings in the call routing table allowing to secure Call Routing rules by limiting their availability for a certain time frame. When the caller attempts to use the specific Call Routing rule outside of the configured time frame, he/she will be denied access.
Call Alert
The Call Alert feature is designed to inform specific personnel about emergency calls and calls routed through specific call routing rules. The notification includes essential details such as the routing pattern, the calling extension, the dialed number, and the call date/time. These notifications can be generated and viewed in the System Events, sent via email or SMS, or left as a voice message on predefined extension(s) along with a recorded message.
 Securing Call Routing
The Local AAA Table serves as the hub for configuring and managing the local authentication database. When the Local Authentication option is enabled on the routing pattern, the caller needs to pass authorization. This can occur automatically through trusted caller ID detection, manually by entering specific login details (username and password), or by using a handset PIN code. Additionally, you have the flexibility to set an expiration period for the authentication process. Once successfully authenticated, the caller gains access to utilize the designated call routing rule.
PIN Barring
The PIN barring feature enables the assignment and management of credits for PIN codes, which are used when the authentication by PIN option is used for calls made through call routing rules with enabled Call Rate Settings. PIN codes without assigned credits cannot use routing rules with Call Rate Settings enabled.
Similar to the method used for QX extensions, the PIN barring feature calculates call costs per minute and second. Once the assigned credits are exhausted, new calls through toll routing rules become impossible until the credit balance is updated manually or automatically. Users can opt for convenient automatic credit balance updates daily, weekly, or monthly.
 Overall Call Duration Limit
The Overall Call Duration Limit may secure the Call Routing rules by putting a limit on the overall call duration for selected Call Routing rules. The duration limit can be set to limit the total duration for all calls for a specified time, such as daily.

Call Relay
Call Relay allows an external call to be relayed through your IP PBX box to an external line or vice versa.
 Call Forwarding
This allows you to program your PBX extension to redirect incoming calls to another number automatically.
 Find Me Follow Me
This feature permits employees to have calls track them down wherever they are.
SMS
This allows you to receive notice of “events” (calls, voice mails, etc.) from the PBX to your mobile phone as a text message.
 Voicemail service
The Voice Mailbox and Voice Mail Settings are readily available to all user extensions on the IP PBX by default. This Voicemail service enables the reception and storage of voice messages directly in the extension’s mailbox. It includes features like new voicemail indications, notifications, and redirection options. Additionally, users can enable or disable the Voicemail service through their extension’s admin settings.
Surveillance
Our IP PBX seamlessly integrates with your voice, video, and surveillance products, offering a unified solution for your business needs. With this surveillance feature, you receive real-time security updates 24/7 via email, cell phones, and more, ensuring a safe environment for your employees and business visitors.
 Unified Messaging
Unified Messaging integrates different message types – voicemail, email, text messaging, fax – into a single mailbox that is accessible from a variety of devices, including your office phone, PC, and cell phone.

Licensable Features for Your QX IP PBX

The following is a list of advanced features that can be purchased as licensable items for your QX IP PBX product. By offering licensable features, Epygi gives you the ability to choose what you pay for instead of being locked into a one-size-fits-all solution. These enhanced features can be added at any time during or after your IP PBX purchase.

  • IP Phone Expansion Key
    • This phone expansion key enables up to 1, 4, 8, 16 or 32 additional local IP phone extensions on the QXISDN4+. These additional key purchases can bring your unit to a maximum of 48 total IP extensions.
  • Epygi Hotel Console (EHC)
    • The EHC is a licensable hotel application complementary to the QX IP PBX line of products from Epygi. Provides telephone control and billing of telephone calls for hotel rooms, as well as supplementary functions such as room status, wake up calls, do not disturb and management of minibar items. Attention: EHC expires and will need to be renewed annually.
  • Barge-In
    • Three unique features are enabled when the Barge-In license is activated. Silent Monitoring, Agent Whisper and Supervisor Barge-In are made available as enhanced features for authorized users on the IP PBX.
      • Silent Monitoring: Supervisors are able to listen in on calls by dialing *91+extension number with no audible notification to the user or incoming caller.
      • Whisper Mode: Supervisors are able to listen in on calls and advise users on what to say to the external caller. Supervisor’s comments are only heard by the Agent. The Supervisor can activate Whisper Mode by dialing *92+extension number. The user dialed will hear an audible tone to notify them that their Supervisor has joined the call.
      • Supervisor Barge-In: ACD Supervisors are able to join established calls and have three-way calls by dialing *93+extension number. All call participants will hear an audible tone to notify that another party has joined the call.
  • Auto Dialer Activation
    • Automate outbound calls directly to clients. The messages played to the clients can be pre-recorded and updated regularly.
  • Auto Dialer Expansion Key
    • Increases the number of concurrent outbound calls by one on the Auto Dialer Activation.
  • Call Recording
    • Call Recording is used to record all types of calls on the QX and store the recordings either locally on the QX by using internal memory or on an external server. The QXISDN4+ can support up to 12 ports of simultaneously recorded calls. The recording will start automatically as soon as the call is established or it will be activated manually on the phone during the active call.
  • Audio Conference Bridge
    • Audio Conference Bridge is an integrated conferencing feature that allows your company to stay connected and current around the globe. The QXISDN4+ can have a maximum of 16 audio conferencing ports with purchasable feature keys. The number of available ports determines how many active users can be on the individual conference bridge at one time.
  • Video Conference Bridge
    • Audio conferencing has always been the method for group communication, especially for remote users. Today, video is more affordable and offers an additional return on investment when addressing remote communication needs. The ability to visually describe something, or determine moods and gestures, greatly increases the effectiveness of remote communication. This feature is available after activating the appropriate feature key, in addition to purchasing the Audio Conferencing license. On the QXISDN4+, two user licenses can be purchased for a total of 8 video conference participants in all active conferences. The maximum total number of video and audio participants in all active conferences is 16.
  • 3PCC Activation License
    • The QX PBX family has a full-featured Application Programming Interface (API). With this feature, applications can be designed to gain direct access to the IP phone system to enhance the feature offerings of this system.
  • eQall Softphone
    • The eQall is Epygi softphone available for Microsoft Windows and for mobile devices using Android. It is a full desk phone replacement and is intended to be used only with QX PBX appliances and Epygi ecQX. After activating the license key it registers as an extension to the QX/ecQX system and operates like a normal PBX extension without the need for a desk SIP phone.
  • eQall SMS Messaging
    • The feature allows an eQall, registered on the QX’s IP line, to send and receive messages via the mobile carriers’ Short Messaging Service. It uses two types of licenses. The first one, eQall SMS, allows to enable the feature on the selected QX extensions. The second license, SMS Account, allows to refill the SMS Account on the QX unit. The credits on the SMS Account can be used by any eQall extension with the enabled messaging feature.
  • CRM Integration
    • Customer Relationship Management (CRM) integration allows users to automatically view, create and update the information for CRM contacts upon receiving inbound calls from customers on the IP PBX. When activated on its QX and UC line of IP PBXs, the per-seat license will provide integration with Salesforce and Vtiger CRM.
  • Server System Redundancy Activation
    • The QXISDN4+ has the ability to be in a 1+1 redundancy design where a second unit is running as an active standby unit. The primary QXISDN4+ will need to have all of the required software licenses enabled. The secondary standby QXISDN4+ will also need all duplicate software licenses enabled, which will be included with the purchase of the System Redundancy Activation key.

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