--- title: TeleDynamics Think Tank | SIP Phones (4) description: SIP Phones | Business Telephone Systems Blog (4) --- [Skip to content](https://info.teledynamics.com/blog/topic/sip-phones/page/4#main-content) [(800) 847-5629](tel:+1(800)%20847-5629) Search [Become a Dealer](https://www.teledynamics.com/become-dealer) [Log In](http://www.teledynamics.com/) - Products - [Full Product Catalog](https://www.teledynamics.com/catalog) - [VOIP and UC](https://info.teledynamics.com/blog/topic/sip-phones/page/4#tab2) - [Business Equipment](https://info.teledynamics.com/blog/topic/sip-phones/page/4#tab3) - [Consumer Electronics](https://info.teledynamics.com/blog/topic/sip-phones/page/4#tab4) - [Computer and Networking](https://info.teledynamics.com/blog/topic/sip-phones/page/4#tab5) - [Outdoor Products](https://info.teledynamics.com/blog/topic/sip-phones/page/4#tab6) - [Home and Personal Care](https://info.teledynamics.com/blog/topic/sip-phones/page/4#tab7) - [Collateral](https://www.teledynamics.com/catalog/category/VOIP_and_UC/Collateral) - 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[Tweet](https://twitter.com/share) [![Two women, one working at a traditional office, one working in a home office - TeleDynamics blog](https://info.teledynamics.com/hubfs/blog-images/hybrid-office1200x627.jpg)](https://info.teledynamics.com/blog/the-hybrid-office-part-1-leveraging-the-portable-landline) The pandemic and resulting lockdowns around the world have dramatically changed the ways that businesses operate. One of the most noticeable changes has to do with what has recently been coined as the hybrid office. In this article, we examine this new operational model and see how various communications services can aid in making it not only viable, but exceptionally advantageous. [Read More](https://info.teledynamics.com/blog/the-hybrid-office-part-1-leveraging-the-portable-landline) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/the-hybrid-office-part-1-leveraging-the-portable-landline#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [SIP](https://info.teledynamics.com/blog/topic/sip), [Mobility (including remote work)](https://info.teledynamics.com/blog/topic/mobility-including-remote-work), [Productivity](https://info.teledynamics.com/blog/topic/productivity) ## [Konftel’s 800 SIP conference phone is now Zoom Phone certified](https://info.teledynamics.com/blog/konftels-800-sip-conference-phone-is-now-zoom-phone-certified) Posted by [Daniel Noworatzky](https://info.teledynamics.com/blog/author/daniel-noworatzky) on Jan 12, 2022, 10:44:00 AM - [Tweet](https://twitter.com/share) [![](https://info.teledynamics.com/hubfs/blog-images/Konftell-800_1200x627(2).jpg)](https://info.teledynamics.com/blog/konftels-800-sip-conference-phone-is-now-zoom-phone-certified) The Konftel 800 SIP conference phone has been officially certified to work with the fast-growing cloud phone solution from Zoom Video Communications, Inc. The flagship Konftel 800 audio device, fully tested to work on Zoom Phone, features an award-winning design and high-quality OmniSound with beamforming microphones and audio expansion capabilities. In this article, we highlight some of the key features of this conference phone. [Read More](https://info.teledynamics.com/blog/konftels-800-sip-conference-phone-is-now-zoom-phone-certified) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/konftels-800-sip-conference-phone-is-now-zoom-phone-certified#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [SIP](https://info.teledynamics.com/blog/topic/sip), [Conferencing](https://info.teledynamics.com/blog/topic/conferencing), [Product Review](https://info.teledynamics.com/blog/topic/product-review), [Cloud](https://info.teledynamics.com/blog/topic/cloud), [Konftel](https://info.teledynamics.com/blog/topic/konftel), [Zoom](https://info.teledynamics.com/blog/topic/zoom) ## [Cisco multiplatform IP phones](https://info.teledynamics.com/blog/cisco-multiplatform-ip-phones) Posted by [Daniel Noworatzky](https://info.teledynamics.com/blog/author/daniel-noworatzky) on Oct 20, 2021, 10:49:00 AM - [Tweet](https://twitter.com/share) [![Cisco multiplatform IP phones - distributed by TeleDynamics](https://info.teledynamics.com/hubfs/blog-images/Cisco%20IP%20phones.jpg)](https://info.teledynamics.com/blog/cisco-multiplatform-ip-phones) *Product Review* Cisco is a household name when it comes to networking, the internet, and telecommunications in general. With its legendary reliability and virtual ubiquity in the market, the company has consistently delivered equipment and services of the highest quality around the world. This reputation has followed the company into the voice equipment market, as well. In this article, we’ll take a look at Cisco’s multi-platform IP telephone offerings and examine their benefits for your business. [Read More](https://info.teledynamics.com/blog/cisco-multiplatform-ip-phones) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/cisco-multiplatform-ip-phones#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [Business Telephone System](https://info.teledynamics.com/blog/topic/business-telephone-system), [Conferencing](https://info.teledynamics.com/blog/topic/conferencing), [Product Review](https://info.teledynamics.com/blog/topic/product-review), [Bluetooth](https://info.teledynamics.com/blog/topic/bluetooth), [Wi-Fi](https://info.teledynamics.com/blog/topic/wi-fi), [Cisco](https://info.teledynamics.com/blog/topic/cisco) ## [Spotlight on Snom](https://info.teledynamics.com/blog/spotlight-on-snom) Posted by [Daniel Noworatzky](https://info.teledynamics.com/blog/author/daniel-noworatzky) on Sep 29, 2021, 10:52:00 AM - [Tweet](https://twitter.com/share) [![Series of Snom DECT devices - distributed by TeleDynamics](https://info.teledynamics.com/hubfs/blog-images/snom-spotlight1200x628.jpg)](https://info.teledynamics.com/blog/spotlight-on-snom) TeleDynamics is proud to distribute Snom products in the United States. Headquartered in Berlin, Germany, it has subsidiaries in the U.S. and other countries and serves customers worldwide. In this article, we highlight the innovation and inventiveness that are instilled within Snom’s products and services today. [Read More](https://info.teledynamics.com/blog/spotlight-on-snom) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/spotlight-on-snom#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [Business Telephone System](https://info.teledynamics.com/blog/topic/business-telephone-system), [VoIP](https://info.teledynamics.com/blog/topic/voip), [SIP](https://info.teledynamics.com/blog/topic/sip), [DECT](https://info.teledynamics.com/blog/topic/dect), [Wi-Fi](https://info.teledynamics.com/blog/topic/wi-fi), [Snom](https://info.teledynamics.com/blog/topic/snom) ## [Comparison of Grandstream GXP and GRP series of IP phones](https://info.teledynamics.com/blog/grandstream-gxp-and-grp-comparison) Posted by [Guest Blogger](https://info.teledynamics.com/blog/author/guest-blogger) on Sep 22, 2021, 10:50:00 AM - [Tweet](https://twitter.com/share) [![](https://info.teledynamics.com/hubfs/blog-images/GRP_Desktop_Meta_Image_Q3_2021.jpg)](https://info.teledynamics.com/blog/grandstream-gxp-and-grp-comparison) By Brian Van Meter, marketing manager at [Grandstream](https://www.grandstream.com/) Grandstream’s IP phones are used around the world by businesses, schools, hotels, and ITSPs. They provide a desktop device that is feature-loaded, intuitive to use, and productivity-focused. The [GRP2600 Series of Carrier-Grade IP Phones](https://www.teledynamics.com/#/catalog/keyword/GS-GRP26**) is the newest line of desktop IP phones and offers both essential and professional-level devices for a variety of deployment scenarios. As the newest series, our GRP IP phones have advanced capabilities that the GXP series of IP phones lacks, and it is important to understand the difference between the two lines when making a purchasing decision. Within this blog post, we’ll be comparing the GXP and GRP series, and explaining where our newest generation of IP phones offer notable improvements. [Read More](https://info.teledynamics.com/blog/grandstream-gxp-and-grp-comparison) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/grandstream-gxp-and-grp-comparison#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [SIP](https://info.teledynamics.com/blog/topic/sip), [Grandstream](https://info.teledynamics.com/blog/topic/grandstream) ## [Grandstream's newest GRP carrier-grade IP phones](https://info.teledynamics.com/blog/grandstream-carrier-grade-ip-phones) Posted by [Daniel Noworatzky](https://info.teledynamics.com/blog/author/daniel-noworatzky) on Aug 25, 2021, 10:44:00 AM - [Tweet](https://twitter.com/share) [![Grandstream GRP carrier-grade IP phones - distributed by TeleDynamics](https://info.teledynamics.com/hubfs/blog-images/Grandstream%20phones.png)](https://info.teledynamics.com/blog/grandstream-carrier-grade-ip-phones) *Product Review* Some of the most important roles within a company require employees to spend a lot of time communicating via telephone. Clear and comfortable communication is vital, and this can only be achieved with the right set of tools, equipment, and services. [Grandstream’s GRP series of carrier-grade IP phones](https://www.teledynamics.com/#/catalog/keyword/GS-GRP26**) are ideal for employees with high call-volume roles. In this article, we review the two newest additions to the series. [Read More](https://info.teledynamics.com/blog/grandstream-carrier-grade-ip-phones) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/grandstream-carrier-grade-ip-phones#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [Business Telephone System](https://info.teledynamics.com/blog/topic/business-telephone-system), [Grandstream](https://info.teledynamics.com/blog/topic/grandstream), [Productivity](https://info.teledynamics.com/blog/topic/productivity), [Product Review](https://info.teledynamics.com/blog/topic/product-review) ## [Yealink’s cost-effective T3 series IP Phones](https://info.teledynamics.com/blog/yealinks-cost-effective-t3-series-ip-phones) Posted by [Daniel Noworatzky](https://info.teledynamics.com/blog/author/daniel-noworatzky) on Oct 14, 2020, 10:49:00 AM - [Tweet](https://twitter.com/share) [![](https://info.teledynamics.com/hubfs/blog-images/YealinkT3-1200x627.jpg)](https://info.teledynamics.com/blog/yealinks-cost-effective-t3-series-ip-phones) With its new T3 series IP phones, Yealink continues its tradition of providing advanced yet cost-effective enterprise telephony solutions to businesses of all sizes. Packed with a plethora of features, these entry-level phones can satisfy both the voice network administrator and the budget coordinator of most organizations. Read on to find out more about what they have to offer. [Read More](https://info.teledynamics.com/blog/yealinks-cost-effective-t3-series-ip-phones) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/yealinks-cost-effective-t3-series-ip-phones#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [Business Telephone System](https://info.teledynamics.com/blog/topic/business-telephone-system), [Yealink](https://info.teledynamics.com/blog/topic/yealink), [Product Review](https://info.teledynamics.com/blog/topic/product-review) ## [Grandstream’s ultramodern GXV3300 smart IP video phones](https://info.teledynamics.com/blog/grandstreams-ultramodern-gxv3300-smart-ip-video-phones) Posted by [Daniel Noworatzky](https://info.teledynamics.com/blog/author/daniel-noworatzky) on Jun 24, 2020, 10:54:00 AM - [Tweet](https://twitter.com/share) [![](https://info.teledynamics.com/hubfs/blog-images/GrandstreamGXV3300_1200x627.jpg)](https://info.teledynamics.com/blog/grandstreams-ultramodern-gxv3300-smart-ip-video-phones) *Product Review* As worldwide travel faces new challenges, businesses have had to depend less on physical presence to get their job done. Grandstream’s video telephony solutions are a great solution for the modern workplace. Grandstream has introduced its ultramodern [GXV33xx series of advanced IP video phones](https://www.teledynamics.com/#/catalog/keyword/GS-GXV33**). The term “IP Video Phones” doesn’t do them justice, however, because they deliver much more than video telephony – they are robust productivity centers. They combine large touch screens and the intelligence of the Android operating system to maximize the user experience. In this article, we review the GXV3380, GXV3370 and GXV3350 models. [Read More](https://info.teledynamics.com/blog/grandstreams-ultramodern-gxv3300-smart-ip-video-phones) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/grandstreams-ultramodern-gxv3300-smart-ip-video-phones#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [Grandstream](https://info.teledynamics.com/blog/topic/grandstream), [Videoconferencing](https://info.teledynamics.com/blog/topic/videoconferencing), [Conferencing](https://info.teledynamics.com/blog/topic/conferencing), [Android](https://info.teledynamics.com/blog/topic/android), [Productivity](https://info.teledynamics.com/blog/topic/productivity), [Product Review](https://info.teledynamics.com/blog/topic/product-review), [Unified Communications](https://info.teledynamics.com/blog/topic/unified-communications) ## [How to tell if an IP phone is defective](https://info.teledynamics.com/blog/how-to-tell-if-an-ip-phone-is-defective) Posted by [Daniel Noworatzky](https://info.teledynamics.com/blog/author/daniel-noworatzky) on Apr 29, 2020, 10:49:00 AM - [Tweet](https://twitter.com/share) [![](https://info.teledynamics.com/hubfs/blog-images/broken-phone1200x628.jpg)](https://info.teledynamics.com/blog/how-to-tell-if-an-ip-phone-is-defective) While it doesn’t happen often, every once in a while you’ll come across an IP phone that simply won’t cooperate. You may have gone through every troubleshooting procedure that you can think of, but the phone continues to refuse to function correctly. You begin to consider the possibility of a defective phone, but before you invoke the manufacturer’s warranty, you want to be sure. Here we review the steps you can take to confirm, to a reasonably high degree, that the problem is indeed a defective device. [Read More](https://info.teledynamics.com/blog/how-to-tell-if-an-ip-phone-is-defective) 0 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/how-to-tell-if-an-ip-phone-is-defective#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [Troubleshooting](https://info.teledynamics.com/blog/topic/troubleshooting) ## [How to fix IP phone registration issues](https://info.teledynamics.com/blog/how-to-fix-ip-phone-registration-issues) Posted by [Daniel Noworatzky](https://info.teledynamics.com/blog/author/daniel-noworatzky) on Apr 15, 2020, 10:40:00 AM - [Tweet](https://twitter.com/share) [![IP phone registration](https://info.teledynamics.com/hubfs/blog-images/ip-phone1200x628image.jpg)](https://info.teledynamics.com/blog/how-to-fix-ip-phone-registration-issues) If you are a voice network engineer, then it has probably happened to you. Your SIP server is all set up and you have plugged in your IP phone. Its lights come on, its screen is activated, you see the loading icon rotating, and then… nothing. For some reason, the phone will not register. IP phone registration issues are, unfortunately, not uncommon. In this article, we examine the most common causes of registration failures, and best practices for troubleshooting and resolving them. [Read More](https://info.teledynamics.com/blog/how-to-fix-ip-phone-registration-issues) 8 Comments [Click here to read/write comments](https://info.teledynamics.com/blog/how-to-fix-ip-phone-registration-issues#comments-listing) Topics: [SIP Phones](https://info.teledynamics.com/blog/topic/sip-phones), [IP PBX](https://info.teledynamics.com/blog/topic/ip-pbx), [Business Telephone System](https://info.teledynamics.com/blog/topic/business-telephone-system), [SIP](https://info.teledynamics.com/blog/topic/sip), [Troubleshooting](https://info.teledynamics.com/blog/topic/troubleshooting), [Firewall](https://info.teledynamics.com/blog/topic/firewall), [Protocols, codecs & standards](https://info.teledynamics.com/blog/topic/protocols-codecs-standards) [Previous](https://info.teledynamics.com/blog/topic/sip-phones/page/3) [All posts](https://info.teledynamics.com/blog/all) [Next](https://info.teledynamics.com/blog/topic/sip-phones/page/5) ## Welcome to our Think Tank In this blog you'll read our thoughts on business telephone systems. While a lot has changed in telecom since TeleDynamics was founded in 1981, we remain as committed as ever to delivering the best customer service in the industry. If you would like elaboration on a specific topic, please let us know in the comments section. 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