BT110 Features and FUnctionality

Alexa built-in

Overview of BT110 Features 

Convenient Call Control via voice commands, a built-in touch panel, an external tablet controller, the smartphone app, or a standard telephone

Multiple Voice Interfaces with hands-free speakerphone, and smartphone or POTS-based private voice mode 

Smartspeaker with a broad suite of Amazon AlexaTM Voice Service (AVS) features such as standard Alexa questions & commands, timers, alarms, reminders, and voice-enabled control of AVS-supported IoT devices

Amazon Alexa Communication (ACM) with Native Calling for inbound and outbound calls:
  • BuddyTalk-Native Calling configured to allow a VoIP subscription for incoming and outgoing calls
  • Alexa-to-Alexa, Skype, Messaging, Drop-ins, and Announcements
BT110 ACM with BuddyTalk Calling

Superior Voice Quality with high-quality wideband codec (e.g., Opus, G.722, AMR WB) and network impairment handling (adaptive jitter buffer & NetEQTM, Packet Loss Concealment, etc.)

Flexible Network Deployment with Ethernet and WiFi for network redundancy, dual-homed mode for disjointed voice and data networks, VLAN tagging for traffic segregation, and VPN for enterprise network traversal  

VoIP Subscription Options. Enabling VoIP by either configuring the BT110 as an IP phone extension to an existing IPPBX or subscribing to an external VoIP service 

Secured Communications with HTTPS/HTTP2 secured connections for message exchanges, TLS for voice signaling, and SRTP with ZRTP/SDES key negotiation for secured media communication 

Digitmaps and Digit Replacement Rules delivering flexible numbering schemes to support diverse calling methods

Reliable Far-Field AVS Interactions and High-Quality Hands-Free Two-Way Audio with advanced audio processing and acoustic designs 

House Wiring Support. Equipped with intra-building lightning protection on its FXS port with support of up to 3 REN, the BT110 enables the use of house phones through the house wiring.

Convenient Call Control


Convenient Call Control using voice commands, a built-in touch panel, an external tablet controller, the smartphone app, or a standard telephone

Call Control using Voice Commands

Utilizing Amazon AlexaTM Voice Service (AVS) speech recognition & natural language understanding technology, plus the calling Skills offered by Alexa Communication (ACM), the BT110 provides an intelligent voice-dialogue based user interface for call control. Examples of call control commands are:

  • “Alexa, call [name in your contact list].” Calling by contacts. Examples:
    • “Alexa, call John Smith’s mobile.” 
    • “Alexa, call John Smith’s office.” 
  • “Alexa, call [number].Calling by phone number. Examples:
    • “Alexa, call 1-408-393-8892.”
    • “Alexa, call 3359.”
  • “Alexa, answer the call.” – Answering an incoming call.
  • “Alexa, hang up.” or “Alexa, end call.” to hang up a call.

When a contact name (e.g., John Smith) is used in a voice command, the AVS/ACM searches through the user’s contacts in the Alexa App and find the best match for the phone number information.  

During an active call, the user can use voice commands to change/set volume, dial DTMF digits, and to hand up the call: 

  • Alexa, increase the volume.” 
  • Alexa, lower the volume.” 
  • Alexa, set the volume to 5.”  
  • Alexa, press 3-7-4-9-pound.
  • Alexa, hang up.

If you ask for the Cloud Mute by asking “Alexa, mute.” Alexa will respond with “To mute while on a call, press the microphone button on the top of your device.

Call Control using Touch Panel

  • Call pickup/offhook
  • Phone mute (mute VoIP voice to remote party) 
  • Flash
  • Volume Control
  • Cloud Mute (mute voice to Alexa)

There are six buttons on the touch panel as shown in the diagram on the left. There are also LED displays associated with these buttons.  For details, please see BuddyTalk Device LED Definitions.

Note that in addition to the basic functions given in the diagram, some buttons are overloaded with other functions.  For example:

  • The device will announce its mater interface IP address when pressing the Flash button for 3 seconds.
  • Tapping the Flash button in the Private mode (the Flash button flashing green) will bring the device back to the Hands-Free mode. 
  • Depending on the call state and the device configuration settings, tapping the Flash button in the Hands-Free mode during an active call may have the device send out the Flash-Hook event to the VoIP server to trigger server-based call features. No signal will be sent to the Alexa server in this case.
  • The Alexa “Action” button can be triggered by pressing the Cloud Mute button for 3 seconds.

Call Control using Mobile App

The BuddyTalk Mobile App offers the following call control mechanisms:

  • Calling using Mobile App dial pad
  • Call History based calling
  • Contacts based calling
  • Incoming call pickup or rejection
  • Phone Mute during action call

In addition to these call control mechanisms, the Mobile App also offers the Private mode voice interface as well as other device controls.  Please see BuddyTalk Mobile App Features and Functionality

Note that when using Mobile App Contacts-based calling, the BT110 uses the Contacts in the Mobile App which may not be the same as the Contacts in the Alexa App used in the Voice Commands based calling.  Please also see Features and Functionality of BuddyTalk Tablet Controller and Mobile App for how the Contacts can be synchronized and imported.

Call Control using Tablet Controller

The BuddyTalk Tablet Controller offers the following call control mechanisms:

  • Calling using the dial pad
  • Call History based calling
  • Contacts based calling
  • Incoming call pickup or rejection
  • Phone Mute during action call
  • Call hand-up on active call

In addition to these call control mechanisms, the Tablet Controller also offers other device controls.  Please see BuddyTalk Tablet Controller Features and Functionality

Note that when using Tablet Controller Contacts-based calling, the BT110 uses the Contacts in the Tablet Controller which may not be the same as the Contacts in the Alexa App used in the Voice Commands based calling.  Please also see Features and Functionality of BuddyTalk Tablet Controller and Mobile App for how the Contacts can be synchronized and imported.

POTS-based Calling

The BT devices also offers the familiar RJ-11 POTS-based calling through the POTS phone connected to the device’s RJ11 port.  The user can also switch the call among FXS, BT110 Speakerphone, and the Mobile phone using the Mobile App. See Multiple Voice Interfaces below.

Multiple Voice Interfaces

 

The BT110 delivers Multiple Voice Interfaces with hands-free speakerphone, and smartphone or POTS-based private mode. 

Hands-Free Speakerphone Mode

Using advanced audio processing technologies and a hardware designed for far-field voice-initiated speech recognition, the BT110 offers high-quality hands-free speakerphone mode for convenient voice interface during a call. The high-quality speakerphone mode coupled with the Voice Commands based call control delivers true hands-free calling experience for the BT110 users.  

With Call Control Using Voice Commands, users can conveniently use voice commands to initiate and answer a call.  During an active call with the BT110 device in the Hands-free speakerphone mode, the BT110 Ring LED will flash green slowly, and the Phone LED on the device touch panel will display solid green.

Private Voice Mode through a Smartphone or a POTS Phone

The BT110  offers two private voice modes through user’s mobile phones and the POTS phones connected to the BT110 RJ-11 port.

The mobile phone based private voice mode is delivered through the Mobile App on the user’s mobile phone. Such a private voice mode can be activated by tapping the Private Mode icon on the Mobile App. During the mobile phone private voice mode, the user’s mobile phone mic and speaker becomes the audio input and output devices for the voice communication. Upon the user tapping the Private Mode icon on the Mobile App, the device announces “Private Mode On.” and the Flash LED on the BT110 touch panel will be blinking blue slowly.  During an active call, the BT110 Ring LED will display slow blinking green, and the Phone LED on the device touch panel will display solid green. 

Active call on Mobile App Private mode

The POTS-based private voice mode can be activated simply by picking up the POTS phone connected to the device’s RJ-11 port. During an active call, in addition to the Flash LED display (blinking blue slowly if the Mobile App Private mode is on), tthe BT110 Ring LED will display slow blinking green, and the Phone LED on the device touch panel will be solid green.

Active call on POTS phone, Mobile App Private Mode on

Active call on POTS phone, Mobile App Private Mode off

Switch the call among RJ11 POTS phone, Speakerphone, and the Mobile App Private mode.

  1. Switching from Speakerphone mode to POTS phone: When the call is conducted in the hands-free speakerphone mode, the user can switch it to the POTS phone simply by picking up the phone to conduct the phone conversation via the POTS phone. The Phone LED on the BT110 device will be solid green and the Ring LED will be flashing green slowly, indicating that the device is in an active call state.

Speakerphone Mode

Pick up POTS phone

POTS Mode

  1. Switching from POTS phone to Speakerphone mode: The user can switch the call back to the speakerphone mode by simply tapping the Phone button, and then hang up the POTS phone.  The Phone LED be solid green and the Ring LED will be flashing green slowly, indicating that the device is in an active call state.

POTS Mode

Tap Phone button

Speakerphone Mode

  1. Switching from Speakerphone mode to Mobile App Private mode: The user can switch the call to the Mobile App Private mode by tapping the Private Mode icon on the Mobile App.  The BT110 device will announce “Private Mode On.”, and the Flash LED will be blinking Blue entering the Mobile App Private mode. 

Speakerphone Mode

Tap Private Mode icon

Mobile App Private Mode 

  1. Switching from Mobile App Private mode back to Speakerphone mode: The user can switch the call back to the Speakerphone mode by tapping the green Private Mode icon on the Mobile App or tapping the Flash button (whose LED is blinking blue) on the BT110 Touch Panel. The BT110 device will announce “Private Mode Off” and the Flash LED goes off.

Mobile App Private Mode 

Tap Private Mode icon or Flash button

Speakerphone Mode

  1. Switching from Mobile App Private mode to POTS phone.  During an active call, the user can simply picks up the RJ-11 POTS phone to switch from the Mobile App Private mode to the POTS phone mode. The Flash LED will continue to be blinking blue, indicating that the BT110 was in the Mobile App Private mode, and when POTS phone mode ends, the device will return to the Mobile App Private mode.

Mobile App Private Mode 

Pick up POTS phone

POTS Mode

  1. Switching from POTS phone to Mobile App Private mode. To switch from the POTS phone mode to the Mobile App Private mode during an active call, the user will tap the Phone button if the device is already in the Mobile App Private mode (with the Touch Panel Flash LED blinking blue), or tap the Phone button on the Touch Panel followed by tapping the Mobile App Private Mode icon if the device was not in the Mobile App Private mode prior to the switch.

The device is already in the Mobile App Private mode

The device was not in the Mobile App Private mode prior to the switch

Device already in the Mobile App Private mode 

Device not in the Mobile App Private mode before switching

POTS w/ Mobile App in Private Mode

Tap Phone button

Mobile App Private Mode

POTS w/ Mobile App Not in Private Mode

Tap Phone button

Speakerphone Mode

Tap Private Mode icon

Mobile App Private Mode

Alexa Voice Service Qualified Smartspeaker

 

Utilizing advanced audio processing techniques, the BT110 is qualified by Amazon Alexa Voice Service as a far-field voice-initiated smartspeaker device supporting reliable 360o voice pickup for up to 9 feet away from the BT110 device. 

The BT110 supports a broad range of AVS smartspeaker features such as standard Alexa questions & commands, timers, alarms, reminders, and voice-enabled control of AVS-supported IoT devices.

Alexa Communication with BuddyTalk Native Calling

 

BuddyTalk Native Calling

Combining Alexa Voice Service, Alexa Communication, and BuddyTalk Native Calling, BT110 permits the configuration of a VoIP service provider, and utilizes the BuddyTalk Calling frameworks to allow all incoming and outgoing calls within the service provider’s coverage area. When using voice commands, the interaction among the user, the BT110, and the Alexa Communication are outlined below:
  1. User issues dialing request.
  2. Alexa responds to user dialing request.
  3. Alexa ACM provides callee dialing information to BT110.
  4. BT110 initiates call through the VoIP service provider network using the InnoMedia SIP Stack.
  5. BT110 and Alexa synchronize call states.  
Note that since Alexa Communication does not support call features, set-based call features are disabled on BT110 in order not to have state inconsistency between the BT110 device and the Alexa Communication server. Also note that Alexa Communication relies on the Contacts in the Alexa App to provide the callee information for the call. 
BT110 ACM with BuddyTalk Calling

Additional Alexa Communication Supported Call Types

Alexa Communication supports calls such as Alexa-to-Alexa, Skype, Messaging, Drop-ins, and Announcements.  Examples are given below.  For details, please see Alexa Communication and Skype Calling on Alexa.  

    • Alexa to Skype calling.
      • “Alexa, Skype Mom”
      • “Alexa, pick up”
      • “Alexa, call 206-555-0155 on Skype”
    • .Alexa to Alexa calling (will set up a call from one device to another in the same Alexa account.)
      • “Alexa call <Other Device Name>.”
    • Messaging.
      • “Alexa, message David.” “Sure. What’s the message?” 
      • “Alexa, play my messages.”
    • Drop-ins (will immediately connect the two devices in a two-way communication.)
      • “Alexa. drop in on my Kitchen Echo.” 
    • Announcements (will play the announcement on all active devices on the user’s Alexa account.)
      • “Alexa, announce that dinner is ready.”

Superior Voice Quality and Reliable VoIP Communication

 
The BT110 offers a set of voice codecs ranging from advanced Opus codec to simple G.711 codec for service providers or users to choose from based on the given network condition and bandwidth constraints for best VoIP calls. These codecs include both high-quality wideband codecs as well as simple narrow-band codecs: 
  • Narrow-band: G.711 (mu-law and A-law), G.729, iLBC, Narrowband Opus. 
  • Wideband: G.722, Wideband Opus, and AMR-WB (G.722.2).  
Additionally, the BT110 employs techniques such as adaptive jitter buffer, NetEQTM,, and packet concealment to minimize the voice quality degradation due to various network impairments such as network jitter, delay, and packet loss.  In addition to voice processing, the BT110 supports in-band or RFC2833 for sending DTMF digits, and T.38 or G.711 fallback for reliable Fax transmission. 

Google MUSHRA Voice Quality Testing: 

  • NB Opus @11Kbps ≈ Uncoded 3.5KHz Low-pass filtered speech
  • WB Opus @20KHz ≈ Uncoded 7KHz Low-pass filtered speech  

Flexible Network Deployment

 

The BT110 may be deployed in a wide variety of office environments with different network configurations. To accommodate these varying network configurations, the BT110 offers the following network interfaces for easy deployment: 

  1. Redundant mode  
  2. Dual-Homed mode  
  3. VPN 
  4. VLAN tagging   

Note: 

  • VPN and VLAN are not available in the Dual-Homed mode.
  • VLAN tagging is application to the Ethernet interface only.
  1. Redundant mode.  When both Ethernet is connected and WiFi is enabled, the Ethernet is the active interface and the WiFi is the standby interface. The Redundant mode increases the connection reliability and can be used when voice and data services can be reached via the same network interface. This is the default mode and can be used in home and many office environments. Note: 
    • When the Ethernet interface loses connection, the WiFi becomes the active/main interface.  When the Ethernet interface recovers, the active/main interface returns back to the Ethernet interface. 
    • The Ethernet and WiFi interfaces can be configured to be in the same subnet for physical interface redundancy or in different subnets to increase network redundancy.  However, when the two interfaces are in different subnets, the Tablet Controller and the Mobile App’s network connections will have to be changed accordingly to be in the same subnet as BuddyTalk device in order for the Tablet Controller and the Mobile app to work with the BuddyTalk device. 
  1. Dual-Homed mode with both Ethernet and WiFi being active, connecting to two disjointed/separated networks. This configuration can be used when the voice network, where the internal IP-PBX and VoIP traffics reside, and the data network, through which the Alexa and BuddyTalk servers can be reached, are separate. Note:
    • The master interface through which the GUI console can be accessed when the device is configured in the Dual-Homed mode is the data network interface.  It is also the data network within which the optional Tablet Controller and the Mobile App communicate with the BT110 device. Therefore, in the initial setup before the Dual-Homed mode is configured, the user should have the BT110 device connect to the data network.
    • In the Dual-Homed mode, in addition to normal SIP signaling and RTP media, packets for VoIP server DNS queries and SIP registration are bound to the voice network. The Provisioning server network location is configurable.
    • The VoIP proxy server and the BuddyTalk device can be in the same voice network subnet, as the case of the BuddyTalk device being an IP-phone extension to the enterprise IP-PBX, or in different subnets as some VoIP service providers have their VoIP network isolated from the Internet. See VoIP Enabling Options below.  
  1. VPN – The BuddyTalk device has a built-in OpenVPN based VPN client that can be used for enterprise network traversal or for remote/work-from-home workers to connect to office IP-based phone systems. For enterprise network configurations where both voice and data services are reachable via the same network interface, but the enterprise firewall does not allow VoIP packets, either SIP signaling, or RTP media, to go through, then, the built-in VPN client can be used to connect to an external OpenVPN based VPN server for enterprise network traversla. For remote/work-from-home workers, the VPN client can connect to the enterprise voice network VPN server, allowing the BuddyTalk device to access the office IP-based phone system. Note that:
    • The routing in the VPN mode can be set to have either only the VoIP packets go through the VPN tunnel or all traffic go through the VPN tunnel.
    • The BuddyTalk VPN client is based on the OpenVPN protocol. It can be connected to OpenVPN based VPN servers.

VPN for Enterprise Network Traversal

Remote access VPN for remote worker or work from home

  1. VLAN tagging for voice data traffic segregation.  This is used in many office environments which use VLAN to segregate voice and data traffic and provide Quality of Service (QoS) for VoIP traffic. Note: There are two typical VLAN configurations as given below, and that the Tablet Controller and Mobile App will communicate with the BT device through the data subnet.
    • SIP signaling, voice media (RTP), and data traffic are separated into three different VLANs , with three different IP addresses belonging to three separate subnets. 
    • SIP signaling and voice media are configured with the same VLAN ID and IP address, which are different from the data VLAN ID and data IP address.   
Please see Configuring Network Interfaces for details. 

VoIP Subscription Options

 

The BT110 permits the configuration of a VoIP service provider, and utilizes the BuddyTalk Calling frameworks to allow all incoming and outgoing calls within the service provider’s coverage area. The BT110 may be configured as an IP phone extension to the office IP-PBX, or configured to subscribe to an external VoIP service. As an IP phone extension, the BT110’s Telephony Proxy Server setting will be configured with the enterprise IP-PBX IP address (may include its port number). When subscribing to an external VoIP service, the BT110’s Telephony Proxy Server setting will be configured with the VoIP service’s Proxy Server FQDN or IP address (may include its port number). In either case, an extension number or a PSTN number will be assigned to the BT110 device to allow both inbound and outbound calls. The configuration of such a SIP account can be done either through the BT110 device web console or through the BuddyTalk Setup App

Note that when configuring the BT110 device as an IP-Phone extension to an office IP-PBX, it is typical that some network configurations may be required to fit to the office networking requirements or constraints.  Additionally, Digitmaps and Digit Replacement Rules can be applied based on the IP-PBX dialing rule to offer users convenient and natural dialing in such an office environment.

SIP Telephony Account Configuration via BT110 Web Console  

SIP Telephony Account Configuration via Setup App  

Secured Communications

 
The BuddyTalk products have taken the various security steps to ensure security of the products, and have obtained the 3rd party security validation during the process of the AVS and ACM qualification.  The security ensuring mechanisms put in place include the following:. 
  1. Secured Connections: 
    • TLS1.2 with certificate validation
    • HTTPS connections to all external web servers
    • Certificate validation includes
      • SAN
      • Date/timestamp check for expiration
      • Certificate revocation check using OCSP
    • Secure websocket-based connections between the BuddyTalk device and the Tablet Controller, and between the BuddTalk device and the Mobile App 
  1. Over-the-Air (OTA) Provisioning 
    • HTTPS secured provisioning for configuration file and image download 
    • Encrypted configuration file
    • Encrypted and signed executable image
  1. VoIP Security 
    • TLS for signaling 
    • SRTP with ZRTP/SDES key management for media
  1. Device hardening with device-dependent password

Digitmaps and Digit Replacement Rules

 

Digitmaps are templates that are constructed based on the dialing plan to match different sequences of digits that users dial so that the device can send out the dialed digits to the respective SIP proxy/server in a timely manner. For the BuddyTalk product Digitmap rules and syntax, please see BuddyTalk Dialing Plan and Digitmaps.  Below is a Digitmap constructed for a typical U.S. dialing plan:

[2-9]xxxxxx|1[2-9]xxxxxxxxx|011x.T|[0-9*].#|*xx

When dialing from within an enterprise IP-PBX encvronment, it is typical that one or multiple prefix numbers are added to the callee numbers for external calls, and numbers with a smaller number of digits are used for internal extensions.  For example, a system reserves 4-digit numbers with the leading digit between 2 and 7 as internal extension numbers, the digit 9 is used as a prefix for external calls, and dialing 0 is to call the local operator/receptionist. The Digitmap for such a dialing plan is given below

0|[2-7]xxx|9[2-9]xxxxxx|91[2-9]xxxxxxxxx|9011x.T|[0-9*].#|*xx

The BuddyTalk products offer multiple convenient call control mechanisms, some are natural to dial with the prefix (e.g., POTS calling), and some are more natural not to have a prefix (e.g., voice commands based calling). To take into account these different dialing patterns, the above Digitmap can be augmented to handle dialings with or without prefix:

0.T|[2-7]xxx|9[2-9]xxxxxx|[2-9]xxxxxx.T|91[2-9]xxxxxxxxx|1[2-9]xxxxxxxxx|9011x.T|011x.T|+x.T|[0-9*].#|*xx

While the augmented Digitmap takes care of gathering and sending out the user dialed digits in a timely mannter, the dialed numbers may still be missing with the required prefixes, thus, insufficient for IP-PBXs.  This is where the Digit Replacement Rules can be used.  A properly constructed Digit Replacement scheme replaces or adds to the numbers matched by the Digitmap with the desired numbers or digits to fit the dialing plan requirements.  The Digit Replacement Rules for the dialing plan and the augmented Digitmap is given below:

 /|/|/|/9|/|/9|/|/9|+/9011|/|/

Please check Dialing Plans, Digitmaps, and Digit Replacement Rules for detail.  Please note that 

  • The Digit Replacement Rules are applied to the Voice Commands dialing, the TC dialing, and the Mobile App dialing, but not used in the POTS phone dialing.  Therefore, when using POTS phone to make calls, prefixes is required for external calls. 
  • The Digitmaps are applied to the POTS phone dialing in a digit-by-digit matching manner as the user dials the number, and the first (shortest) match will trigger the digits to be sent out.  On the other end, the Digitmap process chooses the longest match when used to choose the corresponding Digit Replacement rules to be applied to the Voice Commands dialing, the TC dialing, and the Mobile App dialing.
  • The Contacts used in the voice commands may not be identical to the Contacts used when calling through the Tablet Controller or the Mobile App, as the Contacts used in the voice command calling are from the Alexa App, while the Contacts used in the Tablet Controller and Mobile App calling are from the devices’ Contacts respectively.

BT110 with Various forms of dialing, some with and some without prefix

Reliable Far-Field AVS Interactions and High-Quality Hands-Free Two-Way Audio

 

The BT110 is Alexa Voice Service qualified in the category of far-field voice-initiated devices.  As such, a user can comfortably interact with the the Alexa Cloud through the B110 device to receive quality Voice Service Service in noisy environments and at distances in a natural manner.  Additionally, the BT110 is Alexa Communication certified, supporting 360o voice pick-up and high-quality hands-free two-way voice communication.    

Such reliable far-field voice-initiated Automatic Speech Recognition based interactions and high-quality hands-free two-way voice communication are accomplished through optimized hardware and mechanical design, advanced audio processing techniques, and a thoroughly tuned production and assembly process. 

Such reliable far-field voice-initiated Automatic Speech Recognition based interactions and high-quality hands-free two-way voice communication are accomplished through optimized hardware and mechanical design, advanced audio processing techniques, and a well tuned production and assembly process. 

  • Hardware and Mechanical Design. The BT110 device uses a 3-mic triangular array to allow 360o voice pick-up and the use of advanced processing techniques such as beamforming to increase the gain to the local talker’s speech while suppressing sound and speech from other directions. The BT110 also selects a speaker driver which has low total harmonic distortion with large dynamic range and full 48KHz bandwidth. Special attention has been paid in the mechanical design to maximum echo return loss and minimize distortions due to resonances. 
  • Advanced Audio Processing Algorithms. The BT110 employs advanced audio processing algorithms including Linear and Nonlinear Acoustic Echo Cancellation, Beamforming, Transient Noise Rejection, Advanced Noise Reduction, Dereverberation, Companding, and Parametric Equalization, delivering reliable far-field AVS interaction and high-quality hands-free 2-way voice communication.
  • ThoroughlyTuned Production and Assembly Process. Special attention has been paid to the BT110 production component qualification and assembly process to minimize component incurred nonlinearity and nonlinearity due to rub and buzz noise. Note that the performance of hands-free two-way voice communication is heavily dependent upon the amount of (frequency independent and highly frequency selective) nonlinearity present in the system.   

House Wiring Support

 

The BT110 is equipped with intra-building lightning protection on its FXS port.to allow phones from different rooms to be connected to the BT110 device through house wiring, therefore, extends use of calling with the BT110 device to a phone in another room in the home. 

The FXS port can support up to 2 ringer equivalence numbers (RENs) of load with a ring voltage configurable to be either balanced;60Vrms sinusoidal or balanced 67Vrms trapezoidal.

To assist in diagnosing issues with existing home wiring to allow a smooth installation process, the BT110 provides GR-909 line diagnostics for the following line tests:

 

Test Description
FEMF/HAZ

Detects any foreign line voltage present in house wiring

ROH Tests

Detects if any receiver is off-hook

REN Test
Detects current REN, and if it has exceeded limits
Resistive Faults Test
Detects any short between Tip and Ring in house wiring