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CPaaS Services and Solutions Glossary of Terms

CPaaS stands for Communications Platform as a Service and it’s leading the way in the next evolution of VoIP services and solutions. This popular way of communicating is consistently being talked about by industry insiders as the way of the future. Here Call 48 provides a glossary of CPaaS terms so you can join the conversation with us.


10 Digit Long Code also known as commercial long codes, support the high-volume messaging throughput that businesses need to send out bulk messages. Most of the companies opt for 10DLC because of its capability of sending 100,000 text messages/month with a send rate of 15 messages/second. 10 DLC can be considered as an upgraded version of the A2P messaging.


Application Program Interfaces are a software intermediary that enables two software apps to interact with each other. At Call 48 APIs are integrated into our CPaaS enabled customer platform VoIP Portal, enabling data transmissions between two software applications.


Application-to-Person Messaging refers to text or multimedia messages that are sent by businesses to end-users. Unlike Person-to-Person messaging, A2P Messaging allows businesses to automate text messages for various purposes, such as sending promotional messages, appointment reminders, OTPs, or alerts.


Automatic Number Identification is a feature used by telephone service providers to track the number of a caller. This feature is also offered to businesses to help them identify who is calling them. The line type and the phone number of a calling party are recorded, even if the caller ID blocking is on.


Automatic Location Identification is an intelligent electronic location system that automatically displays a caller’s number and addresses when they call an emergency responder service such as fire departments or police departments. ALI makes it easier for emergency responders to locate the caller’s address quickly, regardless of landline or mobile origination.

Alphanumeric Sender ID

The alphanumeric sender ID technology enables a sender to set their business name as the Sender ID when sending one-way text messages to supported countries. Usually, the alphanumeric Sender IDs can be as long as 11 characters, and the accepted characters are a-z, A-Z, and 0-9. Alphanumeric Sender ID can significantly increase your SMS open rates.

Bulk SMS

Often enterprises trigger SMS to a large volume of customers in one go.

Call Masking

Call Masking refers to the technique of masking a telephone number to keep your personal number private. The same technique can also allow the parties to send SMS to each other without revealing their personal phone numbers.


Click-to-call refers to a type of digital communication in which a person clicks a button or text in order to be connected with another individual in real-time. These click-to-call links are commonly found as buttons on websites or mobile applications.


Click-to-Dial is a browser-based plugin that allows users to auto-dial any number with one click.


Communication Platform as a Service is provided by Call 48 through our backend customer platform called VoIP Portal.

Contact-Center-as-a-Service (CSaaS)

Contact Center as a Service is a customer experience solution that allows businesses to access all the separate components that make up a traditional contact center via any channel.

Concatenated SMS

Concatenated SMS enables you to send longer text messages without the content being split in a way that may confuse the recipient. Businesses use this method to overcome the limitation of the number of characters sent in a single SMS.


Contact center infrastructure consists of both software and hardware components that are required to run a contact center. This includes IVR units, automatic call distributors, cloud-telephony integration, and universal queue management.

Call Detail Record or CDR

Call detail records are used to capture details on calls made on telephone systems, including the name and the number of the caller, the name and number of the receiver, the date and time when the call was made, and the call duration. Call 48 CDRs help our customers generate bills and offer a detailed description of calls made.

Conversational AI

Conversational AI refers to technologies such as virtual assistants or chatbots, which end-users can interact with.

Delivery Report 

A delivery report or DLR is the notification you receive when the SMS sent from your number has been delivered successfully.

Flow Builder

Flow builders can create communications workflow for Voice, SMS, and Webhooks without a single line of code. It can be used for automating, prototyping, and connecting communications flows with your customers within minutes.

Global System for Mobile Communications 

GSM is a system of standardized protocols applicable for mobile devices using a 2G digital cellular network.

Home Location Registry 

Home Location Register is a database that contains various information related to mobile subscribers of a mobile network such as their mobile numbers, the services they have opted for, their number porting history, or any other similar information.

Interactive Voice Response 

IVR is a technology that allows a computer to interact with humans through the use of voice and DTMF tones input via a keypad.


An International Mobile Subscriber Identity is a unique number that identifies every user in a GSM and UMTS network.

Information and Communications Technology 

ICT can utilize internet, computer-based, or mobile-based technology to make communication services available to a wide range of users.


Multi-Factor Authentication is a security system that verifies a user’s identity by requiring multiple credentials. It is a vital component of identity and access management.


Mobile Virtual Network Operators are those organizations that offer mobile services but do not necessarily have the infrastructure that is required to provide mobile phone services.


Mobile Number Portability is a facility that allows mobile users to retain their phone numbers when they switch from one network operator to another, irrespective of the geographical location.


The Mobile Subscription Identification Number refers to the ten-digit unique number used by mobile network operators to Identify a mobile phone.

Mobile Terminated 

The term Mobile Terminated refers to an SMS message sent from a client application and delivered to the recipient’s mobile device, with the word terminated conveying that the messages are delivered to a specific mobile device.

Natural Language Processing

Natural language processing is a subfield of artificial intelligence that assists AI chatbots in understanding and processing human language.


Omnichannel selling offers a unified brand experience to customers irrespective of the channel they are on.

One Time Password 

An OTP is used to validate the authenticity of the user utilizing a one-time-password and expires after each session. The OTP can be purely numeric or alphanumeric.

Person to Application Messaging

Person-to-Application messaging is the process of sending messages from a mobile user to an application. The process requires the end-user to start the interaction with a business or company by sending an SMS to an application.

Person to Person Messaging 

Person-to-person messaging is defined as a two-way messaging conversation between two users via mobile phones or similar devices.

Premium SMS 

Sent to a short 3-7 digit number, Premium SMS is a relatively more expensive SMS service the end user pays to receive. Examples of Premium SMS include voting for a contestant, donating for charity, downloading games or ringtones, or subcribing to paid services like daily horoscope, news updates, etc.

Rich Communication Services

RCS is an upgrade of the text-focused SMS protocol. With RCS, businesses can also track conversions, click-through rates, and read receipts of the messages sent. It allows businesses to send multimedia files, locations, documents to make conversations more engaging.

Representational State Transfer API 

A REST API is a standardized and straightforward way for two applications to communicate via HTTP, similar to web browsers & servers. Businesses usually prefer this technology because of the flexibility it gives.

Sender ID

Businesses often subscribe to a unique number or name while sending text communication. This Sender ID is displayed in the “from” section of the customers’ inbox. It helps businesses create brand awareness and recall.

Session Initiation Protocol 

SIP is a signalling protocol that initiates, maintains and terminates multimedia sessions over the internet. Call 48 offers SIP services and solutions to wholesale and reseller customers with a private label option.

Short Message Peer-to-Peer Protocol 

Short Message Peer to Peer protocol or SMPP is a general standard laid down for SMS processes, regarding how large volumes of SMS can be sent in a very fast and reliable manner.


An SMS API is a well-defined software interface that enables code to send short messages via an SMS Gateway. SMS APIs are often used to bridge the gap between telecommunications carrier networks and the wider web.

Software-as-a-Service (SaaS)

SaaS is a software distribution model in which a third-party provider hosts applications and makes them available to customers over the Internet.

Short Message Service Center 

A short message service center is an element of a wireless network that manages messaging operations such as routing, storing, forwarding, converting, and delivering SMS messages.

Short Code

A Short Code is a 4-6 digit virtual number that enables the receiving and sending text or multimedia messages. They are usually used by businesses to let consumers opt-in to their marketing campaigns, notification services, or to enter SMS contests.


A Text-to-Speech (TTS) software converts written text into an audio format. It allows businesses to have a consistent voice across all platforms.

Two Factor Authentication 

Two-Factor Authentication, (also known as 2FA), is an extra layer of protection used to ensure the security of online accounts beyond just a username and password.

Universal Mobile Telecommunication Service 

The UMTS (Universal Mobile Telecommunication Service) is a 3G mobile cellular network system based on GSM (Global System for Mobile). It can transmit text, voice, video, and multimedia at data rates up to 2 Mbps.

Unified Communications as a Service (UCaaS)

Unified Communications as a Service refers to a cloud-based service offering that enables enterprise communications and instant collaboration across business locations. UCaaS solutions help enterprises stay connected with their stakeholders via text, instant message platforms, voice, or video conferencing channels.

Verified SMS 

Verified SMS is a feature of Google Messages that adds sender verification and branding to a business’ SMS program to make them safer and more trustworthy. This is a step taken by google to strengthen user privacy and security, and prevent spam.

Video API

A Video API makes it easy to build a custom video experience within any mobile, web, or desktop application, and is built on the WebRTC industry standard that is available on billions of devices.

Virtual Long Number

A Virtual Long Number (VLN) is a 12-digit mobile number that businesses use to send and receive SMS or voice calls from the public. It is often used for promotional and marketing activities.

Virtual Private Network 

Virtual Private Network (VPN) faciliates privacy for users by masking their IP addresses. It makes online activities untraceable and provides anonymity to the users. VPN is especially helpful when working from a public network.

Voice API

A voice API, or application programming interface, is a software connection that enables companies to embed the ability to make and receive voice calls into their applications and networks.

Voice over Long Term Evolution (VoLTE)

VoLTE is one of the most advanced technologies that the leading mobile network operators use to deliver high-quality voice calls. Voice conversations that happen via VoLTE will sound extremely clear with reduced background noise. Apart from voice quality, users can also enjoy certain benefits such as faster connection times and longer battery life.

Virtualized Network Function (VNF)

VNFs are virtualized tasks that were formerly managed by dedicated hardware. VNFs transports individual network functions from the hardware devices to software and operates on commodity hardware. VNF includes domain name systems, firewalls, or Network Address Translation, and most of the tasks can be operated via virtual machines.


WebRTC stands for Web Real-Time Communication. It enables real-time media communications like video, voice, and data transfer natively between browsers and devices, allowing users to communicate from within their primary web browser without the need for complicated plug-ins or additional hardware.

How Call 48 Meets Post Pandemic Communication Demands

When the 2020 pandemic hit, it forced us home. To learn from home, to teach from home, to exercise at home, love our friends and family from home. When it came to work, it meant building and innovating from home, and that’s what Call 48 did, with CPaaS enabled tools and platforms that make the new work/life reality today possible.

What the global pandemic made other see for the first time was something that Call 48 already saw, that communications needed to be brought into the 21st century with a presence with cloud-based VoIP services. Communications are no longer merely a service measured by minutes and messages, but rather solutions provided as part of a dynamic real-time platform, allowing for integration with adjacent applications, exponential scale and unfettered creativity and flexibility.

While it is no small task to break free of antiquated premise-based analog telecom infrastructure, Call 48 was there to help them meet the real-time requirements they sought. With our wholesale, reseller and private label customers, Call 48 is a partner, helping them tackle the myriad of technical and regulatory challenges that come with migrating their communications to VoIP services. And while some companies were already en route to shift communications services to the cloud, it accelerated or even started the plans of others.

VoIP Portal, our CPaaS enabled customer platform now in its fourth generation, is rich with APIs, real time capabilities, UCaaS and automation. It gives Call 48 customers access to complete coverage of the United States for DIDs and origination from more than 13,000 rate centers and over 180 LATAs.

We believe the hybrid work environment will be commonly accepted moving forward and Call 48 customers of all types and sizes will be able to continue business as usual utilizing the capabilities we provide. Contact us today to learn more about how Call 48 can help you take your business into the new normal.

Call 48 Conference Bridge for Resellers

Call 48 offers conference bridges through hosted PBX enabling the addition of multiple callers to one dial virtual meeting room. One of the most requested services since the COVID pandemic hit, Call 48 resellers report their end users are loving this feature. For businesses with remote workers, offices with multiple locations, or simple ones with a large staff, Call 48 conference bridges are a must. 

The Call 48 conference bridge allows multiple people to participate in phone call. The most common form of bridge allows participants to dial into a virtual meeting room from their own phone. Meeting rooms can hold dozens or even hundreds of participants.

Our conference bridge system allows the administrator to assign DID numbers to conference rooms.  In some cases as single DID number connects callers with an IVR application that prompts for a room number. Call 48 conference rooms can optionally be secured by a PIN number.  Some systems use a common PIN for all participants while others use custom PINs for each. With our advanced conference system technology, included is a graphical user interface that allows all participants to see who is currently speaking and optionally who has joined the conference.  Admnistrators and moderators generally have a more comprehensive view that includes advanced controls.

Call 48 Conference Bridge Features

Conferencing allows companies to save significantly on travel costs.  In-person meetings are costly and time consuming.  A conference bridge system can pay for itself in just one avoided “on-site” meeting. Conferencing is the core of collaboration and enables distributed or virtual teams. Conferencing makes it simple and affordable for a team to function across a diverse geography.

The Call 48 conference bridge is a high definition-capable component that makes it easy to build stand-alone conferencing services or to integrate conferencing into other solutions, including IP PBX systems.

Are your business clients asking for services like this? Make their meetings go smoother. Contact Call 48 today to be able to offer them conference bridge functionality.

Why Resellers Love Our Turnkey VoIP Cloud-Based Services

The pandemic changed the way everyone did business. But in terms of speed, the only thing it did was make everyone move faster. That’s why Call 48 provides resellers with turnkey cloud-based services for their customers. 

When high-tech VoIP services came down in price it leveled the playing field for businesses of all sizes. Those who needed the push to switch to VoIP services got a real shove when COVID made workforce’s go mobile. 

Cloud-based VoIP services will not only save customers money they will make resellers money. Call 48 offers cloud-based service plans as well as flat rate fees. And because information is stored in a virtual Cloud, again, business owners don’t have to be concerned about managing any hardware equipment, which is going to save them both time and money.

The ability to route and even redirect a phone call is now an option. Businesses keep their current phone numbers, so their office phone will ring regardless of where they are. And when it comes a mobile workforce, if a business moves from one location to another, a cloud based phone system is much easier when it comes to transferring a phone system to a new location.

Don’t miss out on turnkey cloud-based VoIP services and solutions for your customers. Contact Call 48 today to learn more about how you can make money with the cloud.

Call 48 Announces New VoIP Portal Launch

Call 48 introduces our upgraded VoIP Portal for both wholesale and reseller customers. The new state of the art, proprietary portal makes it even easier for our telecom customers to control their account settings with a cleaner interface.

The new Call 48 VoIP Portal offers more complete and easier control than ever before. With mobile workforce reaching an all time high, the VoIP Portal grants better access to individual employee accounts. With much better access to your employees accounts you can now segregate out what levels of access they have and change them when needed.

With changes to the different action features, we have simplified the way you handle account management. Now you can have call forwarding with preconfigured forwarding, have your call forwarding directed toward our enhanced PBX and also forward to local numbers.

With one of the largest footprints in North America, Call 48 continues to focus on our DID network and increased our DID provisioning features. Now telecom providers have access to our full on-net footprint for everywhere that we have on-net DIDs. This now gives our customers access to our inventory of almost 15,000,000 on net and off net DIDS for real-time purchasing.

If you’re an existing customer that has not yet had access or has not been migrated as of yet, please reach out to your sales executive so they can get the process expedited. For new customers, sign up now to take a free demo of VoIP Portal.

Glossary of Acronyms Terms and Hosted PBX VoIP Definitions

PBX is an abbreviation for Private Branch Exchange, a private telephone network used within an enterprise. Did you know what PBX actually stood for? At Call 48 we know that VoIP technology is always upgrading and evolving to meet the needs of customers and because of this, new usages, terms and definitions are always emerging. Here Call 48 helps you navigate all the latest cloud-hosted PBX terms and definitions that virtual companies will use.

ACD (Automatic Call Distribution): A system that allows representatives to speak to callers in the order that they call. If you’ve ever called somewhere and had an automated teller announce that “your call will be answered in the order in which it was received,” you have experienced ACD.
Asterisk: Free, open-source software that runs under Linux, Mac OS X, and several variants of Unix on computers powered by x86, PowerPC, and other processor types. Provides PBX capabilities for VoIP and (with appropriate interconnection hardware) digital and analog telephone systems.
Automatic callback: This term can refer to a PBX feature that lets employees calling from outside the office avoid long-distance charges. The employee places a short call to the PBX, which calls the individual back using an inexpensive (VoIP) calling plan. Confusingly, the term also refers to a feature that sets a phone to make multiple attempts to reach an unavailable number, alerting the caller when a connection is finally made.
Dial-By-Name Directory:A database that allows callers to use their phone keypads to dial the name of the person they want to reach (e.g. 76484 for SMITH).
DISA (direct inward system access): Service provided by PBX systems that lets authorized personnel dial into the PBX from external phones, so they can, for example, place calls through the PBX.
Hosted PBX: A Hosted PBX system is one that is made available through the internet. Unlike a non-hosted PBX system, your office won’t be required to host telephone equipment because the hosting company does if for you. This will significantly lower the cost while providing the opportunity for easy expansion.
IAX (inter-Asterisk exchange): VoIP signaling protocol that provides for control and transmission of streaming media over IP networks. It enables connections between Asterisk servers as well as between servers and clients.
IP PBX (Internet Protocol private branch exchange): A system that, by using the Internet Protocol over Ethernet networks, provides the same functions as, and often extends the capabilities offered by, traditional PBX installations.
IVR: Stands for interactive voice response and is the part of an auto attendant system that provides voice prompts and information to callers and takes action based on the buttons they press on their phone keypads or their spoken answers.
Porting: The process of moving a phone number to a new telephone service. Contact V1 VoIP to find out about our porting rates.
Ring group: A set of extensions that the PBX rings in the order determined by rules the administrator sets.
SIP (session initiation protocol): A set of IP telephony signaling conventions, mostly used for VoIP, but usable for electronic delivery of any multimedia type.
Trunking: An IP PBX’s process of merging data from multiple calls into a single set of packets to reduce transmission overhead.