LTE Archives - j2sw Blog

What is the role of an eNodeB in LTE?

As the core element of the radio access network in the Long-Term Evolution (LTE) network, the eNodeB (evolved Node B) is a key player. It is in charge of the following crucial tasks:

February 18, 2023 by j2sw LTE Wireless

Nokia CBRS LTE equipment Photos

LTE and PIM in WISP Deployments

Awhile back I did some articles on PIM in the WISP field The folks over at SitePro1 have put together a guide and products for defending against PIM.

December 24, 2021 by j2sw Equipment equipment Gear LTE Wireless Wireless WISP

Some Nokia LTE photos

Nokia LTE photos in a test environment.

October 2, 2021 by j2sw CBRS Equipment Gear LTE news

Full LTE Architecture explanation

This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.

May 19, 2021 by j2sw Equipment Gear LTE Wireless xISP

Common Building materials and dB loss in LTE

The following is an estimate of loss using LTE frequencies and common building materials. -Fiberglass -2dB -Drywall -4dB-6″ Concrete 12-20 dB-Brick -10-20dB

March 27, 2021 by j2sw LTE

Justin’s List of xISP vendors and resources

I have been working on this list for a while. The following are vendors, manufacturers, and various companies I have dealt with in my career as an ISP owner and consultant. This is not a complete list by any means. These are companies I have dealt with personally and/or are sponsors of this site. Companies with the are ones that support this blog and I personally recommend. I don’t recommend them just because they support this blog, but because they provide a good...

January 10, 2021 by j2sw Cambium equipment Equipment Gear LTE Mikrotik Technology Tools Tower Wireless Wireless WISP xISP

Mikrotik Audience

This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.

July 28, 2020 by j2sw Equipment LTE Mikrotik

WIFI calling port forwarding

Recently I came across a need to do some port forwarding for wifi calling. I have assembled a resource guide to help you if you need to do such things. IPSEC should be allowed per RFC 5996 https://tools.ietf.org/html/rfc5996 for all wifi calling Verizonhttps://community.verizonwireless.com/t5/Verizon-Wireless-Services/What-are-the-wifi-calling-firewall-ports-and-destination-IP/td-p/1080659UDP ports 500 and 4500 open to sg.vzwfemto.com and wo.vzwwo.com TMobilehttps://www.t-mobile.com/support/coverage/wi-fi-calling-on-a-corporate-networkIPv4 Address Block: 208.54.0.0/17 and 66.94.0.0/19:UDP Ports 500 and 45005061 for SIP/TLSTCP port 443 and 993Also whitelist the CRL server for DIGITS OTT and WFC 1.0: crl.t-mobile.com 206.29.177.36 AT&Thttps://www.att.com/support/article/wireless/KM1114459/UDP Ports 500 and 4500TCP...

July 20, 2020 by j2sw 5g Equipment LTE Networking Tips