14. SIP TRUNK number

What is SIP Trunking?

SIP (abbreviation of Session Initiation Protocol) is a common telephony protocol that initiates calls over the Internet and is primarily used to manage multimedia communications, such as voice and video calls. SIP establishes and terminates the connection for a phone call, controls data transmission, and enables services like Skype and Facebook Messenger to offer free calls anywhere in the world.

A “trunk” is a line or link that carries signals and connects nodes in a communications system – in other words, a pipe carries data channels within it to connect two locations.

SIP Trunking is a method of sending voice and other communications over the internet through a private branch (IP) exchange, which is a telephone system that transfers calls between users on local lines while allowing them to share the usage of an external phone line.

A contact center cuts costs by avoiding the need for each user to have a line to a telephone company's central office. SIP can be used to send and receive local and long-distance calls, text messages, and emails; online; and proceed to video chat.

Outstanding advantages of SIP Trunking

For a business, the problem of optimizing business costs is quite a difficult problem. SIP Trunking is a service that does well in saving phone system costs for businesses. Therefore, cost savings are the first factor for customers when choosing this product. In addition, SIP Trunking also has other advantages such as:

Centralized network

Because SIP Trunk is based on IP, you can use a centralized network with many different features. For example, digital streaming is easy without requiring a physical infrastructure, helping businesses save on maintenance costs and hardware investments.

Additionally, the removal of the PSTN gateway allows SIP Trunking to connect directly to the chosen internet service provider. Thanks to that, your business can eliminate the need for subscriptions and flexibly expand telecommunications services at a lower price than the original price.

Local call charges

When using SIP Trunk, businesses can use local call charges for all calls, avoiding the costs of expensive long-distance or international calls. The charges for calls are all local fees.

In addition, to increase competitive advantage and customer experience, SIP Trunk service providers also have additional services such as ENUM, and phone number mapping,... These services allow you to use one phone number no matter where you are in the world. They also offer 800 number removal through local provision as per your geolocated location.

Extension ability

Channels can be added and expanded easily, activating in just a few hours. SIP Trunking allows you to easily expand an unlimited number of channels per trunk without any physical setup or setup.

Crash recovery

Even if you have a network error or encounter difficulties or difficult terrain, you can still make calls through SIP Trunking. This service tends to be much more flexible than traditional phone systems. They are programmed so that they are geographically redundant, routing calls to different locations or data centers. Therefore, call quality is always guaranteed and incidents are resolved quickly and urgently.

Hotline number

The hotline number is a number configured as a SIP trunk, not a normal phone number. A SIP trunk is a voice communications service based on the SIP (Session Initiation Protocol) protocol used to connect an organization's telephone system to the public telephone network or VoIP (Voice over Internet Protocol) network.

Hotline numbers deployed through SIP trunk allow organizations to provide support or consulting services to customers via the Internet. When a customer calls this hotline number, the call will be redirected through the SIP trunk and connected to an IP Phone system (desk phone) or a software application to handle the call.

Instructions for registering for SIP Trunking service

To own a SIP Trunk number, users need to contact and buy the number through telecommunications carriers: Viettel, Mobifone, Vinaphone, Gtel, Digitel, iTel,...

Step 1: You need to calculate the number of channels you need and the size of your business.

If there are less than 100 employees, 3 employees will have one SIP channel. For companies with more employees, it will be necessary to calculate the most optimal way.

Step 2: Evaluate the strength of your bandwidth to best support SIP. If the bandwidth is not enough, calls will be interrupted.

Step 3: Once you have cleared all the necessary information about the number of channels and bandwidth capacity, the next thing you should do is choose a SIP Trunking provider with the best price.

Note: In case users want to use their personal phone number as the contact center hotline number, they need to directly contact the network operator of the current subscriber to convert the number to SIP Trunk format.

Integrate SIP Trunking into StringeeX

With StringeeX contact center, customers can integrate directly with SIP Trunking service:

  • Connect SIP Trunking to make outbound calls from landline numbers

  • Use a fixed number to call customers. You can make multiple calls at the same time, displaying only 1 fixed number registered with the network operator.

  • Set up a direct IP transmission line from the customer's device to the StringeeX contact center system, without going through intermediary contact centers. So connection time is fast, service quality is good and security is high.

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