protection waterproof telephone

Why install emergency phone motorway, what convenience will it bring to your travel

2022-10-28

What is an emergency phone motorway? An emergency phone motorway is a phone line that is set up specifically for...

OEM industrial telephone

2022-10-25

Utility Tunnel Emergency Call Box The industrial telephone adopts aluminum alloy die-casting shell, which has high mechanical strength and strong...

Public Place SOS Emergency Telephone

2022-10-24

The Public Place SOS emergency telephone is made of stainless steel and it is equipped with a hands-free function with...

What does a fire engine telephone do and why should you choose it?

2022-10-21

Fire truck phones are an important tool for firefighters. It allows them to communicate with the command center and other...

Waterproof keypad public emergency telephone

2022-10-17

Phone line powered. Standard Analogue phone.  304 stainless steel material shell, high mechanical strength and strong impact resistance. Vandal resistant...

The difference between SIP protocol and H.323 protocol in VOIP

2022-10-17

In IP telephone, H.323 and SIP are both used as application layer control protocol for multimedia communication. SIP：Is a text-based...

How to choose the right Emergency Phone and call box suppliers for your needs

2022-10-11

Emergency phone and phone booth vendors are devices that allow people to communicate in an emergency. These systems may include...

SIP Cleanroom Telephone

2022-07-07

The surface of the equipment is flat, the sterile room telephone made with advanced technology, used PE film panel,  no power...

mining outdoor industrial telephone

2022-06-16

The outdoor industrial telephone has a standard analog phone, phone line powered. There are also SIP/VoIP, GSM/3G versions, and aluminum...