Follow the steps below to setup a PEER based IP authenticated trunk: Open the UCX Web-based Configuration Utility. Additionally, we will be expanding the media port range from 10000-20000, to 10000-60000. The price to make a call may vary based on the destination of the call. Each section defines configuration for a configuration object within res_pjsip or an associated module. SIP trunking allows any organization to upgrade its offline PBX to an internet-powered business phone system. Virtual Number; SIP Trunk;. Open your favourite web browser and enter the IP address of your Acepeak FreePBX server. In the telecommunication language, “trunking” is when physical, electrical lines connect switching hardware to each other. The DIDWW SIP trunking solution enables companies of any size to leverage fully compliant voice services with virtually unlimited call capacity, flexible SIP trunk settings, truly local dialing. 00/user per month. If you don't configure SIP trunk security profiles, by default, Cisco Unified Communications Manager applies a nonsecure sip trunk security profile. Note. Although both Telnyx and Twilio offer some of the same functionalities, there are some important differences to consider. To connect a SIP trunk to a PBX, you will need to configure the PBX with the hostname or IP address of the SIP provider’s server, as well as the username and password provided by the SIP provider. com for SIP trunking, both in and out, along with a Fonality PBXtra onsite PBX. Customers using this Avaya SIP-enabled enterprise solution with BT SIP Trunk can. Take advantage of fast ROI and minimal trunking costs by moving to an IP voice system. ca Password: Your. Select Add SIP Trunk. 0035 per minute. For the configuration guide, I used "TwilioBLOG". SIP trunks are responsible for creating the actual connection between individual participants. We are making this change to provide flexibility. To configure on a call-by-call basis, refer to the Route Group Configuration in the Cisco CallManager Administration Guide. 045. 3. The PSTN is made up of a network of copper phone lines on a circuit-switched network, which requires a physical connection between two points to make a call. In addition to a Configuration Note, each interoperability test yields unique templates for our SBC Configuration Wizard. The Best SIP Trunking Providers for 2023. If adding 2 different accounts on a single 3CX. Phone numbers, or DIDs, are cheaper when purchased with a SIP trunk. g729 annexb-all. Up to 10 routes can be added to a single Origination. destination-pattern 1. Permintaan SIP diproses oleh proxy SIP , yang memastikan pesan diterima dalam format aslinya, seperti panggilan suara, pesan instan, dan panggilan video. The table below contains all Elastic SIP Trunking pricing for the locale. Trunk Outgoing settings – PEER details. Click the ‘add SIP Connection’ button and choose a name for your connection. Make Calls. Press the Apply Config bar at the top. – Lower startup costs, especially because little to no new hardware/equipment is required. SIP trunking is one of the most cost-effective modern business communication solutions available. By utilizing SIP trunking, businesses can maximize the efficiency of their trunk channels, ensuring that each channel is actively utilized to handle. For more information, please visit the SIP trunk features are not supported in a Unified SRST and Unified Border Element co-location deployment. type=peer. CONNECT YOUR NETWORK TO THE FUTURE. Luke has 6 jobs listed on their profile. sinch. More on this topic 👉 out our blog. Alongside tools for Microsoft Teams and existing UC platforms, Sinch offers a range of APIs for verification, video, voice, and SMS messaging in the CPaaS space. SIP Protocol Session initiation protocol is an application layer protocol that initiates and terminates voice communication sessions over the internet, allowing users to talk in real time using phone calls. AI Cloud Contact Center; DID Number; Bulk SMS; Wholesale Voip; Remote Contact Center; Menu Item. Click Add an SBC and enter the following information: For SBC name, enter the name of the SBC. Each Mediation Server has an internal network interface and an external network interface. Home - NUWAVE Communications. However, on the Outbound call there are a few 200 OK messages sent from CUCM to CUBE before the BYE messages start. Trunk Resource. Masergy is the global cloud collaboration expert at the intersection of Microsoft Teams®, Cisco Webex®, SIP trunking, and network connectivity. You retain control of your PBX software and communications services, and can customize your. Scroll down to Elastic SIP Trunking and click it. When transferring the call from the PolyCom Phone/Handset, the FROM address in the SIP header is party B. Alltel offers metered and unlimited SIP channel plans, and there is no minimum contract required. Dedicated Internet. VoIP comes with the advantage of call quality that’s as good or even better than the one that comes with traditional phone lines. Set your Authentication ID/username and password (as you configured in your user credentials on your Twilio Trunk) DID’s and Inbound Call Identification: Enter your Twilio numbers under the "DID" tab. Learn more about iPILOT. This will open a window where you can choose the Type of SIP Connection you want to set up. . In 2H 2023 Twilio will be updating the media IPs and port ranges for SIP and Voice SDK calls in all regions. . Fill in the following fields: Account Name - enter a descriptive name, e. Set the SIP server hostname to: example. 1 to support Clearcom SIP. Price. It provides a fast, reliable and scalable Platform used to provision, manage, and support your preferred Cloud Platform Provider network infrastructure. Location: USA. The WAN is connected to the internal network that provides SIP calling with portable phones, deskphones, and other third party devices. It enables you to extend voice over IP (VoIP) telephony beyond your organization's firewall without the need for an IP-PSTN gateway. For supported SIP Trunks we do this for you and we provide a template. 013. 5. Global, High-performing Enterprise Voice Services. 95 per month, and then pay as you go for phone numbers and usage (calling). We breakdown key factors of SIP solutions such as. 21, 2023 (GLOBE NEWSWIRE) -- DIDWW, a global telecom operator specializing in premium quality VoIP communications, two-way SIP trunking, and SMS services, has become a strategic voice partner with VitalPBX, a leading provider of unified communications PBX systems based on Asterisk. And of course if anything goes wrong you need to know how to fix it. #2. Telnyx uses a private network, which provides better call quality, security, and. However, adding SIP trunk channels does not require adding more physical wiring. Instead of settling for Microsoft’s limited, pricey and rigid Calling Plans, you can keep your existing phone system, carrier and phone numbers while taking advantage of. The 3CX team makes sure that all templates from listed SIP Trunk Providers are updated and tested with every release ensuring no issues arise for our users. One access for voice and data, resulting in cost efficiencySIP trunking is a voice over Internet Protocol (VoIP) technology and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and unified communications. A decent alternative pick is Sipgate, who'll charge you £8. Each call requires 2 RTP ports, one to control the call and one for the call. SIP trunking providers give you the best of both worlds: the improved functionality and cost-efficiency of VoIP phone plans and the ability to keep your current phone system. Discover reliable, scalable, and seamless solutions today. SIP Domains: To select one of your already-configured Termination SIP Domains, click the “SIP Domains” Pull-Down Menu here and choose the one you want to use. Enter the IP address of the PBX that connects to your VoipNow server. Key Differences between WebRTC and SIP. The Microsoft Teams SIP Trunk goes a step further, connecting Teams to your business phone system so all of the enterprise voice features are added onto Microsoft Teams. Solutions In this blog, we dive deep into the world of SIP trunks and get into what they are, what are the benefits, the business use cases – and more! public switched telephone network(PSTN) Primary Rate Interfaces (PRIs) Multiprotocol Label Switching (MPLS) These are some of the most common benefits for businesses:The term trunk in SIP trunking refers to virtual phone lines that you can use to make phone calls over the internet to anyone with a phone number. Lumen® Voice Complete® is a comprehensive, global solution that enables you to use cloud-ready SIP services and APIs to maximize performance, enhance reliability and simplify management without having to replace TDM technology. In regards to the SIP Settings, I have been told not to do any IP Address binding under General/TCP/NAT as we have two different SIP sources. As your needs increase, you can easily modify or add more users and bandwidth. Learn more. In this webinar, learn how SIP trunking can provide savings phone system and and flexibility for your business communications. SIP trunking is a phone-system setup that enables your IP PBX phone system to make VoIP calls via the internet or PSTN, while VoIP is voice calling over the internet. Cost Savings with SIP Trunking. A Trunk can have associated Credential Lists, IP Access Control Lists, Origination URLs, and Phone Numbers. 323 and SIP telephones at the enterprise. . SIP trunking enables connectivity to the public switched telephony network (PSTN) directly over SIP. SIP is the technology that can create real-time connections between two phones. Some of the free for low-volume emails are really good. In this example, the PC user will not be able to reach the server on the left-hand side as the traffic. Pros of SIP Trunking. SIP trunking is a network service that allows businesses to connect VoIP phone systems to the traditional phone network. Some companies may have a separate Internet connection for the SIP traffic or even a direct private link between the premise and the ITSP. Your SIP trunk provider should be able to give you a table like the one below for use in calculating the bandwidth requirements when using its service. conf is a flat text file composed of sections like most configuration files used with Asterisk. Secure, fast, and cost-efficient connectivity built for mid-sized to enterprise organizations. sip. It integrates with the existing PBX system and connects it directly to the cloud. Robust. Verizon VoIP for Operator Connect couples Microsoft Teams Phone System to Verizon's IP trunking (Verizon VoIP) solution, making it quicker and easier to place Microsoft Teams voice calls to and from phone numbers outside of your company’s network. Similarly to PRI, SIP allows you to have multiple voice lines within an organization. And so, SIP gives voice over internet protocol (VoIP) capabilities to your regular PBX. secret=** qualify=yes. Fonality says open the following ports: UDP 5060 (SIP) UDP 10000 - 20000 (SIP. When you need to migrate to MLS, your PBX needs to support SIP terminations and would need to create a sip trunk. On the Connectivity -> Trunks page, select Add SIP (chan_pjsip) Trunk. CID Options: Force Trunk CID. Less than 150 ms one-way latency, less than 1% packet loss, and less than 150 ms end-to-end between phone and Edge when phone is on WAN/Internet. Trunks transport digital data packets through the network, from the Private Branch Exchange (PBX) to their final destination. 3CX SIP Trunk Providers - Canada. Navigate to the PBX -> IP Trunk Assistant page. 8 billion dollar industry by the end of the forecast. Book a face-to-face appointment by contacting us here. SIP Trunks, Toll-Free & Local Phone Numbers in any City. description TO LAGOS. In other words, you will stay with you from the time we initiate your project, through the installation and implementation phases, and beyond. 0. This allows for companies using a SIP-enabled PBX to send and receive calls over the internet. Unlimited Flexibility & Routing “Being able to send calls over. Managers can use the technology to leverage VoIP’s power to consolidate business communication systems, improve. Outbound CallerID:SV8100 9. Cisco Unified Communications deployments offer a rich set of supplementary services. SIP Trunking. SIP Trunking Between IP Office and the UCx Server. 1. 2. Elevate your business communication with Shaw SIP Trunking offered by Ace Peak Investment. DIDForSale offer SIP trunking in Canada. SIP trunks. Elastic SIP trunking gives you all the benefits of SIP trunking at a higher degree of flexibility and with the robust feature set you need to stay ahead of the competition. SIP-telephony works in tandem with VoIP telephony. SIP. You can configure your SIP infrastructure to use any of the following Sinch geographical locations: Europe: euc1. Much cheaper; cost savings vary but can be as much as 30-40% cheaper than PRI phones. The deployment model covered in this application note is CPE (Avaya Aura Communication Manager 7. In this video, we cover the differences between SIP Trunking and VoIP. 51. Hosted (Cloud - Dedicated) Self-managed (Private cloud - On-premise) BUILT FOR REMOTE WORKING. Vonage: Best SIP trunking provider offering location-based routing. with the capability to create, update and/or delete SIP/IAX trunks as well as the capability to enable/disable them. Business Internet 20. Call Us. connectivity to Verizon SIP trunking service. All inbound calls from the PSTN were routed from the service provider across the SIP trunk to the enterprise. Lumen ® SIP Trunking enables you to use SIP-based services to improve performance, enhance reliability and simplify management with no TDM technology replacement. Canada ACA Consultation Process. MS Teams. Trunks existed with regular landline telephones; SIP trunking is just the Internet version of trunking. com. Navigate to Device > Trunk, select Add New. This increased power in an SIP trunking system is used for advanced telephony services, such as voice mail, directory. So if your workforce is too familiar with their existing phone system, you can still take advantage of cheaper running costs and telephony upgrades without upsetting their workflow. This route will send traffic to IP address 198. If you need more capacity, you can simply activate more channels without having to install more lines. Prices can be retrieved at a country level via the Pricing Trunking Countries resource or for a specific phone number via the Pricing Trunking Numbers resource. SIP trunking provides many valuable benefits: Cost – Often SIP is much cheaper than PRI and comes with easy-to-use administration portals for easy management. It takes the form of channels established between its internal telephone system and the Internet network. , An Even Better SIP Trunking Solution. This configuration is typical for a single target, unencrypted SIP trunk. If you’re looking for the cheapest SIP pricing for local or toll free numbers, UniTel Voice’s SIP trunking service has you covered on affordability, features, call quality, ease of use, and customer. What is SIP-Trunking (or a SIP-Trunk)? SIP-Trunks are used in VoIP-telephony and serve to connect telephone systems to the Internet or to cloud services, if necessary. ADVANTAGE VOICE FOR SEAMLESS RETAIL CUSTOMER SERVICE. netSIP Trunk numbers—virtual phone lines facilitating seamless, internet-based phone calls—are driving this communication revolution. Not having it could threaten the quality of the call and your security. SIP-phone-to-SIP-trunk support requires Refer and 302/300 Redirection to be supported by the SIP trunk (Version 3. 86. During my time at Telexperts as a DevOps developer, I worked on developing a Telecom SIP trunking system that could handle over 200,000 calls monthly and was fully scalable. CS1000-Node. From the PBX tab, select PBX Configuration. Resellers come to the wholesaler for advice and expertise; therefore, introducing them to SIP trunks is a great way to save costs and strengthen customer relations. When you make an outbound call through your SIP trunk, your device initiates a session that occupies one. By 2027, the SIP trunking market could be worth $30. Please try again or contact application support if the issue persists. The BT SIP Trunking service referenced within these Application Notes is designed for business customers. 0/18. We give you the reliability that far surpasses what’s available through the free SIP trunk for Asterisk services you’ll find on the market. They can connect to the PSTN via their own SIP trunking provider by choosing the bring your own carrier (BYOC) option offered by most major cloud-based unified communications and contact center. Setting up a SIP trunk between Rogers SIP Trunking Service and an E-MetroTel UCx Server. 8% between 2020 and. Feb 3, 2021. The solution is turnkey, offering a robust VoIP Platform, Billing System, PSTN connectivity, and 24x7 Support in a fully branded environment. With Plivo, businesses pay a minuscule monthly fee and less than a penny a minute (in the US; pricing varies by country) for outgoing voice calls, which is less than the cost of a call on a number leased from a phone company. Cisco Unified SRST provides Cisco Unified CM with fallback support for SCCP-based Cisco IP phones that are attached to a Cisco router on your local network. 16) UniTel Voice SIP. Or Shaw's SMTP relay (only thing you'll be able to connect to using 25) Outgoing TCP 25 is the only port that Shaw blocks. An SIP trunk is simply an access link between a service provider’s network and the enterprise communication system. Configure Multiple Trunks Using Tenants . Add Auto Attendant to your plan 24 and bring professional reception to your customer experience. SIP is the technology that’s used for establishing, modifying, and terminating a voice communication session over the internet. The difference between WebRTC and SIP is that WebRTC is a collection of APIs that handles the entire multimedia communication process between devices, while SIP is a signaling protocol that focuses on establishing, negotiating, and terminating the data exchange. When you research IP trunking, keep an eye out for SIP trunking. Have voicemail deliverd to your email. In this case, the server returns the SIP code “484 Address Incomplete” because the DID doesn’t come in the invite. You will also need to specify the extension or context to use for the SIP trunk. 05. In the section Connectivity -> Trunks add SIP(chan_pjsip) trunk. If you do not have any Domains already. Implementing SIP trunking empowers businesses with a range of advantages, including optimized trunk channel utilization, seamless configuration of trunk channels, and enhanced call quality. dtmf-relay rtp-nte! dial-peer voice 2 voip. Reliable. In order to run the test cases in section “Inbound Calls With Multiple SIP Trunks”, an additional account will be required with a new set of at least 2 DIDs. A SIP provider provides SIP trunking over monthly, annually, or pay-as-you-go contracts. The Trunk resource represents a SIP Trunk in your Twilio account. It does this using the header fields previously mentioned. Click Create. Location: USA. This virtual connection uses a packet switched model to connect voice to voice, from phone to data connection to your regional phone lines. SIP trunks from Shaw. 1. UniTel Voice SIP. Write DID number to DDI/DID Table for extension that will use it (inbound) You can connect your Panasonic PBX to E-MetroTel PSTN SIP Trunks. 015 per minute*. Have Questions? Contact Us. Built for your future. According to our research, the best SIP trunking providers are 8×8, FlowRoute, and Net2Phone. ctfassets. SIP stands for Session Initiation Protocol, which is a standard protocol used to initiate, maintain, and terminate real-time communication sessions, such as voice and video calls, over the. For a SIP trunking service that fully supports Asterisk’s open-source PBX solution, turn to thinQ. It’s based on SIP (Session Initiation Protocol) and allows business phone systems to operate with an internet connection rather than an analog one. 3. Locked; Solved DTMF not working after Ver. In contrast, SIP trunks can be purchased in any increment and,. You will select a Generic country and a Generic SIP Trunk provider. Broadvoice: Ideal choice for companies expanding worldwide and needing unlimited calling plans. SIP trunking is a type of communication technology that is used to run phone systems over an internet connection as opposed to through conventional phone lines. Details first - IPO 500v2 Release 11. Well, a SIP trunk is connected to the organization’s phone system. SIP trunking is the successor to T1 as the de facto trunking service for enterprise telephony. However, there’s a difference in the behind-the-scenes setup of hosted PBX and SIP trunking specific to call quality, and here’s what you need to know. Bandwidth. Display name is the username and should be numeric (e. Cost savings is one of the main. incoming called-number 17. Read providers terms and conditions before you purchase. SIP trunks are basically virtual lines used for connecting internet-based calls to any phone number. In regards to the SIP Settings, I have been told not to do any IP Address binding under General/TCP/NAT as we have two different SIP sources. SIP trunking services are provided by a communications service provider who uses the SIP protocol over an IP network to connect a PBX to the PSTN. With IP based authentication, you will need to obtain the IP address of the host from the trunk provider. 729 compressed. Call Flow Designer. A Session Initiation Protocol (SIP) trunk is the digital version of an analog trunk line that lets users make outgoing and receive incoming calls. Your ongoing costs will run around the same as hosted PBX, around $20-$50 per month, charged by user rather than by phone line. After a brief evaluation, they might conclude the services are commodities with little differentiation, especially given the fact SIP trunking has been available for more than a decade and adoption is widespread in most industrialized countries. I have trunks that register and can call in and out, but no inbound audio on either [. SIP SMS/MMS helps create a more personalized experience through texting. FirstComm is a leading technology solutions provider offering unparalleled cloud communications, data, voice, security, and managed services to over 35,000 businesses across the United States. Cloud. The open source PBX plan includes essential features such as call forwarding and SMS. Plus taxes, fees and equipment charges. SIP Trunk basically uses the SIP protocol technology to transform all or part of your broadband connection into communication trunk that functions like a virtual phone line (Of course if you have a large call volume you may want to get a dedicated broadband connection, just for your telephony needs). “Trunking” can be thought of as similar to. One of the main impacts of this difference is the fact that a VoIP. Business Internet 30. Benefits include speedy setup, free professional USA-based support, and management. We will be moving from a per-region IP range allocation to a single global range; 168. The first UK number is free, but you'll pay £9. In almost any case, SIP trunking will be your best choice. Global SIP trunking for UCaaS & CCaaS platforms, from one provider. Scalable. (MGC) port, whether the link is serial (12-in-1 port) or digital (E1/T1 trunk DS0), the assigned channel ID, and whether the link is stopped or. 100% Canadian service provider. SIP enables businesses to use your existing Ethernet/fiber connection as a voice solution. . x ml Note: You can look at the Twilio Freeswitch integration for more details. From the Elastic SIP Trunking Dashboard, click the "Get Started" button. This modern equivalent can, however, do much more. VirtualPBX. With SIP trunking from thinQ, your end point’s PBX can send and receive calls through your internet connection. The bottom line is this; SIP trunking replaces traditional telephone lines. In this post I will show you how to do just that using a $100 Raspberry Pi 4 computer connected to a Twilio Elastic SIP trunk. 6. You’ll want the correct firewall settings for the best quality voice calls. Step 2: Configure Common Device Configuration. 0315 / min. Your service will remain of high quality, with redundancies in place in the case of an emergency. 5. Session Initiation Protocol is a widely used telephony protocol that establishes a voice or audio media session over the telephone. Selecting a SIP trunking service provider may seem like a straight-forward decision to many IT managers. Save 45% on this Underscored-approved video doorbell that protects your most prized possession: your home. SIP (SIP Trunking) An enhanced communication platform, SIP offers cost-effective IP data connectivity to run your local, long distance and private voice traffic. SIP trunks are responsible for creating the actual connection between individual participants. A SIP trunking service pricing plan is easy to understand, and is usually billed on a per-user basis. SIP Trunking (Session Initiation Protocol) services for any PBX system, with coverage coast to coast across Canada. Elevate your business communication with Shaw SIP Trunking offered by Ace Peak Investment. Learn more about its benefits and how to. Sip Trunking and Firewall Settings. SIP-terminated calls are calls that are being routed from your SIP infrastructure to the Sinch platform through a SIP interconnection/trunk. BYOC Trunk SID: This is the unique identifier of this BYOC trunk, and is assigned automatically once you create a trunk. Basically, SIP Trunking is a service that provides VOIP or Voice over Internet Protocol. SIP is an acronym for Session Initiation Protocol. The SIP trunk service is subject to applicable local taxes and telecommunication regulatory recovery fees. including enterprise-grade SIP Trunking, Hosted PBX, Business Internet, Dedicated Access, Colocation and Cloud Contact Centre Services. Mengirimkan paket yang dapat menyertakan suara, data, atau video. Instantly deploy our solution anywhere in the world. To learn how to create and use SIP Trunks, check out. SIP trunking is a type of protocol used for VoIP, although the relationship between the two has often been confused. Voice solutions that work the way you do. 64. Call us at 1-877-813-1727 , send an email or chat online to talk to your local Eastlink Business team today. Today, it would take 15+ years and $500M+ to rebuild this network. The term trunk in SIP trunking refers to virtual phone lines that you can use to make phone calls over the internet to anyone with a phone number. Before understanding the importance of Session Border Controller in SIP Trunking,. SIP trunking makes it easy to provide local numbers around the world, even if you have a single location or PBX, providing a more comfortable experience for your customers than 800 numbers. Menu Item. From the left side column, select Trunks. We were unable to determine the correct login approach for this portal. I don't have redirect header on inbound calls ticked on the sip trunk config. SIP trunking uses an on-site PBX server to. Session Initiation Protocol (SIP) is a standardised set of communication formats used in VoIP, instrumental in the. The destination address configured is the address of the recording application server. SIP trunks are provided by internet telephony service providers (ITSP) instead of the traditional phone company. Nextiva SIP trunks convert traditional phone systems to VoIP solutions, making it easy to place multiple calls. Route. To configure the caller ID pattern in Acepeak FreePBX inbound routes, you first need to access the admin interface. Calling line and name restrictions configuration also occurs independently of each other. username=8766549749. . Global calling just got simpler. ITSP SIP Trunk using AudioCodes Mediant E-SBC product series. The “trunking” part refers to the virtual link between your private business telephone network or Private Branch Exchange (PBX) and traditional phone network, using an internet connection. Hence the SIP access link can be whatever size as required by the company. From 1 Rack Unit to Full Cabinets 10/100/1000 Megabit. North America Coverage. 164 phone number that you added to the trunk. Designed to replace traditional phone lines, a SIP trunk is a virtual link between your PBX and PSTN using a broadband internet connection. Originally built as a method (or “protocol”) for analog desk phones to connect to a PBX (Private Branch Exchange) system, it was simultaneously extended to connect the PBX. Under Settings or Advanced settings on the web utility, enter the provisioning server URL shown above. A SIP-Trunk is the virtual counterpart of an analog phone line. SIP trunking. Pricing is $9 for unlimited SIP Trunk and $1 per DID. g. Internet & Networks (Dedicated Internet, SD-WAN or VPSL/EVPL) Voice Solutions (Advantage Voice, Managed Voice, SIP Trunking or PRI) Managed Solutions (Managed WiFi, Managed Security or Managed Surveillance) Colocation & Cloud. UCaaS solutions provide all the features and advantages of hosted PBX (and SIP trunking), as well as benefits like: Support and accessibility for remote and hybrid work environments. 1 using SIP trunk to Cisco Unified Communications Manager Release 10. SIP is a core component of VoIP, the technology that allows you to make and receive calls over the internet.