Equiinet Empowering Brenntag, a Global Chemical Leader: IP Phones + Teams Extensions Interconnection, Driving Efficiency to New Heights

Jan 15, 2026

Part 1 - Company Profile

Brenntag is a global leader in the chemical distribution industry, headquartered in Essen, Germany. Its global network spans over 550 locations across 74 countries. In 2016, the Group employed approximately 15,000 people and achieved global sales of €10.5 billion (USD 11.6 billion).

Brenntag (Zhangjiagang) Chemical Co., Ltd. is one of the chemical distribution and processing bases under the Brenntag Group. Its processed products are widely used in major industrial sectors such as paints, coatings, adhesives, printing inks, daily chemicals, food, pharmaceuticals, electronics, automobiles, water treatment, and lubricants.

Part 2 - Enterprise Requirements & Solutions

Requirement 1：Deployment of a Cost-Effective IP Communication System

With the continuous expansion of business, the existing Teams licenses can no longer meet the needs of all employees. The enterprise urgently requires a cost-effective IP communication system to handle domestic call services.

Equiinet Solution：Deployment of the SINA IoT Communication System.

The SINA IoE Phone System offers features such as call transfer, call forwarding, three-way conferencing, call recording, and call logs, effectively meeting the enterprise’s daily office communication needs.

In addition, the system features a lightweight architecture and easy scalability. For phase II expansion, the enterprise only needs to purchase software licenses without additional hardware investment, significantly saving budget.

Requirement 2：Communication Between Teams and SINA System, and Implementation of External Communication Functions

The enterprise expects the existing Teams to communicate with the SINA IoT Communication System, i.e.:

Free mutual calls between Teams extensions and SINA extensions;

Teams software to make and receive calls to/from domestic customers.

Equiinet Solution：Since Microsoft Teams does not natively support direct domestic calls in China, it is necessary to integrate an SBC (Session Border Controller) with the IP telephone system and Chinese operator lines. The Equiinet team deployed a private SBC for the user.

As a connecting bridge, the SBC realizes the following key functions：

（1）Enables free mutual calls between Teams and SINA extensions, meeting internal communication needs among colleagues from different departments;

（2）Connects Microsoft Teams to Chinese operator lines, allowing the enterprise to freely make and receive domestic customer calls via Teams.

Specific Operation Steps：

（1）Deploy the SBC in the enterprise equipment room and connect it to the network switch;

（2）Prepare E5 licenses for Teams extensions to ensure call receiving, making, and voice communication permissions;

（3）Achieve SIP integration between the SBC and both SINA and Teams systems.

Final Outcome: Users can directly dial external lines of customers from various industries via Teams, or make external calls through extensions under the SINA system to contact customers.

Industries Covered by Brenntag Chemical

Requirement 3：Rational Utilization of Existing External Line Resources

The enterprise has 2 30B+D external lines:Line 1: Dedicated for incoming and outgoing calls of SINA extensions;Line 2: Dedicated for incoming and outgoing calls of Teams extensions.

Solution：Deploy 2 E1 gateways in the equipment room and connect them to the network switch.

（1）Connect Line 1 to the E1-0 port of the E1 gateway, and achieve trunk integration between this port and the SINA telephone system, enabling SINA extensions to make/receive calls via Line 1.

（2）Connect Line 2 to the E1-1 port of the E1 gateway, and achieve trunk integration between this port and the SBC. Meanwhile, bind the number resources of Line 2 to Teams extensions on a one-to-one basis, realizing: Each Teams extension has an exclusive outbound number.

Part 3 - Network Topology

Part 4 - Solution Highlights

1、Rich Functions & Easy Scalability of SINA System：Meets both daily office communication needs and future phase II communication requirements after enterprise expansion, reducing expansion costs.

2、High Compatibility & Security of SBC as a Bridge：

（1）Enables Teams to make external calls, allowing users to directly dial customers’ mobile phones or landlines, improving communication efficiency.

（2）Realizes interconnection between Teams and SINA extensions, facilitating internal communication among departments;

3、Flexible E1 Gateway Application：Supports 30B+D line integration and seamless connection with SBC and SINA systems, ensuring smooth incoming and outgoing calls for the enterprise.

Part.5 -- Equiinet Introduction

Beijing Equiinet Network Technology Co., Ltd. is Consists of a group of highly skilled IP communication experts. At present, it has provided IP communication services for more than 50,000+ enterprises in the world, and is an official Microsoft certified partner with a value -added telecommunication business license.

Keep the complexity to us, leave the simplicity to customer. Provide users with a one-stop Internet of Everything communication solutions. 30~30,000 people of enterprise IP office communication | AI intelligent IVR | cloud communication | Microsoft Teams Voice Direct Routing | command " change voice "Communication | IoT center system that can connect various IoT sensors and realize linked alarms, the program is all-inclusive.

Through the cooperation with agents and system integrators around the world to serve customers. Honesty with loyalty and service is the philosophy of our team. The company is a member of the IT Enterprise Integrity Alliance, and has won the National IT Industry Top 100 Award: Best Digital Solution Provider, Most Innovative IT Product Award. At the same time is the China Information Systems Operation Trade Association (ISOTA), the digital communication products title supplier.

www.ioephonesystem.com

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