Dealing with similar and other issues as well.
Tyson Burris, President Internet Communications Inc. 739 Commerce Dr. Franklin, IN 46131 Office # 317-738-0320 Cell/Direct # 317-412-1540 Online: www.surfici.net What can ICI do for you? Broadband Wireless - PtP/PtMP Solutions - Mesh Wifi/Hotzones - IP Cameras - Fiber - Towers - Infrastructure. CONFIDENTIALITY NOTICE: This e-mail is intended for the addressee shown. It contains information that is confidential and protected from disclosure. Any review, dissemination or use of this transmission or its contents by unauthorized organizations or individuals is strictly prohibited. -----Original Message----- From: AF <[email protected]> On Behalf Of Adam Moffett Sent: Saturday, July 24, 2021 10:09 AM To: AnimalFarm Microwave Users Group <[email protected]> Subject: [AFMUG] CBRS - A house of cards CBRS is really annoying right now. On some channels in some locations newly registered CBSD's start out in the state "Grant Suspended - IAP Pending". IAP is a process for calculating interference. It doesn't happen everywhere, but we are getting used to the idea if we're installing in Town X we know we'll have it happen. IAP used to take 5 minutes and it was no big deal. Later it was taking a few hours....at that point I complained to Commscope and was told they were working on a solution and give it a few weeks. Now a month later IAP is taking 16+ hours to complete. So a new install process apparently has to include telling the customer everything is ready except waiting for official permission to transmit and we don't know how long that will take, but you might be up sometime tomorrow. Total nonsense. Yesterday an SM that had been online for 7 months suddenly went into "Grant Suspended - IAP Pending". Cambium support theorized an NTP issue of some sort, and they had a pretty specific story about pool0.ntp.org having an issue. By the way, the grant is only for 5 minutes so if your device's clock is off by a few minutes you can get a grant that ended in the past or starts in the future and either way you're broken. So NTP is now a mission critical service. I don't know if an NTP mishap really caused this, but it doesn't sound impossible. To fix the broken customer, we learned experimentally that if you set the AP country code to "Other" that we can transmit in 3.5ghz without waiting for the SAS. CnMaestro continues proxying the CBRS registrations for up to 3 days so the "Suspended" client eventually goes back to "Granted" and then you switch the AP back to "US". Not saying it's ok, but the purely compliant solution is to leave the customer down for a day, and I don't like that either. So yeah.....a house of cards. Don't let the table wiggle or the wind blow. -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
