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Quarterly Newsletter June 2020 We hope you, your loved ones, and your colleagues are doing well and staying safe. It’s been a busy quarter for 2600Hz and everyone on our team from Engineering to QA and Operations to Marketing have been working hard to bring you more tools that enable productive remote work. In case you missed it, we released a ton of new products, features, and functionality and we have a lot more great things planned for Q3. Key Highlights From Q2 As part of our commitment to enabling remote work, we reprioritized our roadmap and brought our customers the comm.io desktop app. Video conferencing, a WebRTC-based softphone (we call it a web phone), virtual faxing, and more are built in, giving users all of their personalized communication information and tools in one place, right on their desktop or laptop. Check out the new comm.io site to see all that it can do! What Do You Want In An Operator Console? We are continually enhancing our product suite so we can provide you with the best reseller and end user tools that will help your business be successful. We are going to start sending out product surveys to get your input and to help us identify exactly what you and your customers need. We’re currently working on improving our Operator Console and have a few questions for you based on your customer’s requests and feedback when it comes to operator and attendant functionality. Please take our short 6 question survey that won’t take more than 2 minutes of your time. Your response will make a difference! You can take the survey here. Other New Product Releases & Updates In addition to releasing comm.io, we rolled a TON of new updates, features, and functionality in Q2 and already have more in the works that we’re planning to roll out in Q3. In case you missed it, here are some of the exciting releases and updates from Q2: SMS — You can now send and receive SMS on most 2600Hz DIDs! Receiving inbound SMS is configurable via Webhooks and outbound SMS can be sent by utilizing our APIs or Zapier. If you have a Zapier account, you can connect SMS by Zapier with over 2,000 apps to create automations and custom notifications. Another great thing about SMS, you ask? You can send and receive SMS on softphones and any desk phone that supports message notifications! There truly are infinite useful and creative ways to utilize SMS...check out this blog for some interesting use cases and examples! Voicemail Transcription — This feature helps users stay connected by converting voicemails to text. Transcriptions can be emailed or viewed in the Voicemails section of Comm.io. The feature is powered by Google’s ARS system, so it has phenomenal accuracy. There is a fee for using this feature ($0.05 per minute) so it is off by default for all existing voicemail boxes. New voicemail boxes currently have the feature enabled (although we're going to be changing it to be off by default in the next update) so if you don't want to use it, you'll need to disable it. It’s easy to enable or disable — watch how to do it here! Announce-Only Voicemail Box — Perfect for closures and other informational messages, announce-only voicemail box enables a voicemail box to play a recorded message without allowing callers to leave a voicemail. This feature can be enabled and messages can be easily changed at any time in the Voicemail Boxes section of SmartPBX by going to Advanced, then Options. Hold Music Resume — Hold music no longer restarts at the beginning every time you put a caller on hold! This is ideal for custom/sales messages because callers will now hear a continuation of the message, instead of it restarting at the beginning every time the caller is placed on hold. We’re already planning our first release of Q3, so keep an eye on your email! In Case You Missed It It wouldn’t be a 2600Hz newsletter without some media and press updates. Here’s some news and a few marketing highlights from Q2: UC Today published not one but two exciting articles featuring the 2600Hz team — SMS is Key to COVID-Era Business Survival and 2600Hz Intros Beta Softphone & Video Conferencing. We rolled out a series of video tutorials about how to get started with KAZOO to help new partners get up and running in no time. Check them out here. 2600Hz was featured in UC Today’s UC Market Guide 2020 and our very own Patrick Sullivan contributed an article about the often-overlooked characteristic of UC providers & their solutions. Download it here. Patrick was also invited to do a video podcast with The UC Buyer, which you can check out here. We published new blogs about provisioning devices, business agility and SMS. We added a few new podcasts to our podcast page here. A Few Friendly Reminders 2600Hz Community — Are you a member? It’s a forum where you can join in on timely discussions with your peers, get support for all things KAZOO, and find the latest 2600Hz resources. You don’t have to be a 2600Hz customer to be a member, but our customers do get access to additional resources and documentation. We’re making the forums even more user friendly, updating many of the documents, and adding even more support docs for our users and resellers. If you aren’t part of our community yet, join today and keep an eye out for exciting updates! Visit the community here. Free UC w/ 2600Hz Podcast — Our podcast is still going strong and we’ve added a few episodes this quarter that you definitely don’t want to miss! To make listening even easier for you, we created a new podcast page that gives you access to all 20 episodes in one place. Check it out here, and don’t forget to bookmark the page since we’ll continue adding to it! Monthly Business Partner Calls — If you’re a paid 2600Hz customer, these are for you! On the 3rd Wednesday of each month, we hold an interactive call with our CEO and Co-Founder Darren Schreiber. During each call, Darren shares need-to-know information that applies to your business and is available to answer any questions you may have. This is the ideal opportunity to engage with Darren on a regular basis while learning about important updates that can help your business thrive. Find more information about our next call here. That’s our update for now! We’ve been working hard and will have a lot more exciting news and updates for you soon, so keep an eye on your inbox and don’t forget to follow us on Twitter, Facebook, and LinkedIn.

Hey Everyone, We’re excited to announce the Kazoo 4.2 release is primed and stable for launch! To ensure a smooth transition and address any real-time issues that may occur, we’ve segmented the upgrade into phases that we'll roll out based on your platform. Hosted Platform Clients: We’ll be kicking off the upgrade with Hosted Platform clients this weekend - The update will begin on Sunday, March 25th, 2018 at 10pm PST. No disruption to service is expected. Private Cloud & Global Infrastructure: If all goes well, Kazoo 4.2 will be available to private cloud and global infrastructure clients for upgrade via Cluster Manager next week (remember to let us know before you schedule an upgrade with your clients!). Look for more communications around this soon! Open Source: Over the next week we’ll be promoting 4.2 as stable for all open-source users. Feel free to connect with us in the community if you have any questions. You can find highlights of what’s in 4.2 below: (*Please note that some bugs were also released as part of 4.1 so may already be in your environment if they were deemed urgent.) Feel free to comment or reply to this post with any questions and our team will do our best to get back to you ASAP. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ What to Expect from the 4.2 Upgrade: Feature Updates, Bug Fixes & More Features We are launching a refreshed login page – complete with social media buttons you can configure in our Branding app! Our Branding app has been redesigned to make it easier to brand your customer’s experience – including previews of the branding. The Voicemail Manager app has been updated to have a more intuitive experience. The Fax Manager app has s sleek new interface to enhance the usability. All email notification templates that are using the system-wide standard will be updated to a new, friendlier, nicer looking format. System admins can now “impersonate” any user on the system they have access to, so that debugging is easier, from Monster UI. Multiple Call Center improvements, including: New Features A new reporting API Added CSV support to reporting API Improved event sending to reduce erroneous warning messages Shortened callid's for recipient dialouts Added ability to load all queues and recipients with single API call Switch from using "Action" field to "Event-Name" to be consistent with other Kazoo applications Added support for tracking non-Qubicle calls Added CCV's with information about queue actions to inbound calls Improved hold-treatment handling Added "Event-Timestamp" to enable events to display correct timers regardless of client time correctness Agent/manager role enforcement in the UI Timers sync’d across different clients/browsers/time zones Visually improve app loading Show problem queues in real time without reloading the app Greater Stability: Improved routing strategies and routing metrics Improved logging for all entities Improved call offer process Simplified session management Improved session join process to prevent timeouts due to network latency Added active session check to prevent "ghost" sessions Improved failure handling during outbound dialing to agents Improved system startup across multiple zones Improved process management across nodes Added sensu checks for Qubicle to monitor telemetry Vulnerability Fixes KAZOO-5848: A sophisticated hacker who gained access to a Kazoo server’s internal RabbitMQ management port, when deployed in a multi-zone configuration, and where RabbitMQ was configured to require a password, could manipulate the WebSockets application to emit the password for RabbitMQ access. This is due to the user/pass being part of the AMQP broker URL itself. These changes were implemented to protect against this: Filter optional AMQP headers prior to exposing externally (#4625) Ensure UI applications that use websocket channel create/answer/destroy events show the current call state properly (primarily Operator Console) The Kamailio team has notified the public of a security vulnerability where a malformed packet can be used to overrun memory space, causing Kamailio to crash. A sophisticated hacker may be able to manipulate memory space for other purposes as well. This is fixed in Kamailio 5.0.4j and higher. Bug Fixes Fixed incorrect failure code for inbound faxes HELP-34413: Inbound faxes show wrong failure code (TX not RX) if there is a failure Improved parking stops efficiency at the account level HELP-34315: Parking Stops working in accounts after repeat create/delete of parking documents Improved VM security HELP-34437: Improve security of voicemail for customers who do not follow our GUI setup process and misconfigure fields, to avoid hacking of insecure voicemail boxes Corrected time of day HELP-34176: Time of Day not working on Mondays in some cases (also fixed in 4.1) Improved Webhook data and compatibility HELP-32874: Webhook data not backward compatible with old CDR format (fixed) Removed duplicate call recording events HELP-33420: Fixed inbound call recording duplicate events Enhanced caller ID settings in Smart PBX HELP-33189: Allow setting Caller ID in SmartPBX for a number in porting state Enhanced VM recording media HELP-34868: Enforce media_source for cf_voicemail when recording voicemail greetings Porting updates HELP-34892: Phone numbers in port_in state are not set to in_service after successful inbound calls Fixed Voicemail-to-email errors HELP-34519: Voicemail-to-Email Notification is disabled: a new voicemail message might be still marked "saved" or "deleted". BLF improvements for *98 Support for BLF on mailbox via *98 + mailbox number Resolved Provisioner Crashes KAZOO-5837: provisioner_v5 crashes when trying to get the label for presence combo key Updated device ring groups KAZOO-5575: Ring group does not check if device is deleted Revised Doodle requirements KAZOO-5636: Doodle should not be a required app, currently kazoo crashes when doodle is not installed Improved email notifications KAZOO-5718: Comments entered in the GUI by the user for a port do not cause an email notification Enhanced ledger query functionality KAZOO-5657: Queries for large number of ledgers can crash kazoo applications Improvements to Call Recording storage Ensure storing call recordings to an HTTP URL works as expected (Google Drive / AWS) Fixed whitelabel upload errors KAZOO-5794: After uploading a new whitelabel logo with Monster UI on sandbox, 404 on the following request to GET the /logo Improved default port templates KAZOO-5717: Default port email templates don't include port messages Refined voicemail retention capabilities KAZOO-5736: As a user I want kazoo voicemail to not count messages older than retention duration Qubicle Fixes Cancel offer timeout when offer is rejected Remove bindings for outbound recipient calls after use Removed "primary_node" field from queue configurations Filter invalid endpoint types before attempting outbound recipient calls Fixed overflow timeout bug Correctly return error codes for failures during outbound dialing to agents Check to prevent duplicate sessions

2600Hz will be at Channel Partners and would love to see you! Take a much needed break and stop by our meet and greet on Wednesday, October 10th from 4pm - 7pm in the Loews Hotel Concierge Lounge on the 31st floor. Come enjoy some delicious food and drinks on us! RSVP to let us know you'll be stopping by to say hello. - RSVP HERE

Complete 4.1 Overview: Re-write of BLF (Fundamental re-write of how it works) More robust solution Automatic of flushing BLF indications when call processing is lost (stuck lights) New maintenance commands to clear lights at account, zone and cluster level Notification email retry for failure (the inability to leave our system - NOT the failure to be received) - We are just retrying if email can’t leave our servers. Provides a more reliable notification New maintenance commands to view notifications, status failures, and retries Kamailio Auto Discovery of FS servers Kamilio will automatically manage the dispatcher list Use the command: kazoo-Kamailio status Dbtext is no longer used /etc/kazoo/kamailio/dbtext - Note: if you are doing what you’ve always done, it’s not going to work anymore Make sure your Kamailio is properly federated on a multi-zone cluster to avoid inter zone call looping Kazoo Cluster Status Enhancements Kamailio dispatcher list is now included along with the current dispatcher state for easy trouble-shooting of call routing issues Includes the configured Kamailio roles to easily identify architecture of a cluster. Debug presence information to help balance the presence/blf load Performance Improvements Improvements to CPS Added feature to block anonymous callers We are deprecating the old way of doing this by creating a blacklist with a phone number comprised of all 0’s Please convert to using the new parameter - See our documentation site for more details Features that identify missed calls that didn’t leave a message - No missed opportunities Sponsored by Bluetel Parking enhancements - Changes to how parking is stored in the DB for performance and stability Default email templates have been improved/enhanced/updated This is an opt in. Will NOT be automatic - will require sys admins to run a command and sub resellers that have white labeled to reset their templates (using the branding app) On hosted this is not opt in. If you have not white-labeled the templates, expect them to change once the update occurs Any customization made will be lost - test on sandbox Improved email to voicemail templates (highly requested feature) Identifies the actual VM box Account info provided at bottom Format phone numbers: You can now identify the country for local calls Quest for internationalization Various ways to format. Users can configure to see numbers from various countries in more comfortable display formats Improved user experience Storage Integrations (Google drive, AWS (store VM/Fax storage) Call recording, voicemails, faxing all included More to come on integrations (GD, AWS, etc) in next few months Call Recording Ability to turn on/off at the account, user and device level for inbound, outbound, internal and external Changing call flows no longer required Ability to use first storage integrations in the platform (google drive, AWS) Port Submission (now a port history can be pulled) Complete revamp. More user friendly, greater reliability, can view a timeline of all porting events Multi factor authentication integrations Starting with DUO for user login Things to be Aware of: When installing any RPM in CentOS you should always watch for warnings about “.rpmnew” files during the install process. In this particular case, it is critical you resolve these warnings or Kazoo will not start. This is due to how the cookie management for Erlang is managed, which has changed. Specifically: Watch out for .rpmnew files in /etc/kazoo/kamailio If these are not resolved - Kamilio will not start, BLF will not work, won’t discover freeswitch servers Watch out for .rpmnew files in /etc/kazoo/core Changes to vm.args is resulting in RPMnew files that will keep kazoo from starting - simply overwrite the vm.args with vm.args.rpmnew No longer edit vm.args Upgrade Schedule & Details For those on our Hosted Platform, the intended release date is the weekend of September 9th, 2017 (look for specific maintenance window notices as we get closer to that weekend for exact times). For Private Cloud and Global Infrastructure clients, we will begin assisting with your upgrades after September 12th, once our rollout to hosted platform has been completed and is stable. All paid 2600Hz customers are strongly encouraged to review the new applications and updates on our sandbox servers, prior to the rollout of this version, to ensure you understand the new features and are able to ask questions before updates are visible to customers. Let us know if you have any questions surrounding the 4.1 Release and look for upcoming emails and announcements with more details. Team 2600Hz