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So far dobrytech has created 26 blog entries.

DOBRY Fixed Wireless Terminal Series

DOBRY 1 port and multi-ports Fixed Wireless Terminals are the natural choice for residential, SoHo and business communication needs. Users can benefit by using the FWT, as it helps save on costs by turning fixed to mobile calls into mobile to mobile calls. Homes, offices and other areas lacking fixed communication infrastructure, or residents

2019-09-20 0 5 111Read more

LTE Frequency bands and channel bandwidths

The following table lists the specified frequency bands of LTE and the channel bandwidths each band supports. 4G LTE FDD TDD bands and relevant channel bandwidths. Band Duplex mode[A 1] ƒ (MHz) Common name Subset of band Uplink[A 2] (MHz) Downlink[A 3] (MHz) Duplex spacing (MHz) Channel bandwidths (MHz) 1 FDD 2100 IMT 65 1920 – 1980 2110 –

2019-08-02 0 3 136Read more

4G LTE voice service solutions

LTE is a long-term evolution plan based on the UMTS technology standard specified by 3GPP. It features high-speed, low-latency, and multi-bandwidth flexible networking. Can bring users a good data service experience. The LTE network adopts a flat IP network interface and has no CS domain. It can only implement voice call through VOLTE. However,

2018-07-10 0 5 293Read more


The difference between CDMA RUIM and NON-RUIM CDMA network is widely use in wireless telephones, smart phones, fixed terminals,modems,etc. Lots of users and buyers are confused with RUIM and NON-RUIM Let’s figure out their difference simply. Removable User Identity Module (R-UIM, usually pronounced as "R-yuim") is a card developed for cdmaOne/CDMA2000 ("CDMA") handsets that extends the GSM SIM

2018-06-06 0 3 347Read more

Fixed Wireless. Mobile Broadband. What’s the Difference Anyway?

Feeling confused by all the tech terminology? You're not alone. So, what is the difference between fixed wireless and mobile broadband? Keeping up with technological advances these days can be more of a challenge than keeping up with the Kardashians. As the internet evolves, so do the networks that deliver it into your hands. If

2018-03-05 0 3 272Read more

Five tips to choose the best antenna for your wireless communication products

Antenna is widely use in our lives. TV, router, modem, telephone, mobile phone, all communication products need antenna. Antenna helps wireless carriers to quickly increase capacity as well as deploy new spectrum in zoning challenged locations. These rugged all weather antennas are designed for years of reliable operation.Different machines use different antennas according to connector,

2017-08-15 0 3 249Read more

GSM, 3G, 4G Networks World Coverage Map

Lots of buyers can't figure out their working frequency so that buy wrong product which can't work finally after they receive. The below world networks country list for you reference. * Note - This data is current as of April 11, 2019 and is by no means authoritative. This data should be used as

2017-08-09 0 8 446Read more