support wiki

helpful humans at 423-456-6700

User Tools

Site Tools


Sidebar

System Setup
Getting Started
Setup Wizard
Porting Numbers
Caller ID
Special Projects

Networking
Network Introduction
Recommended Equipment
Ideal Network Setup
Firewall/Network Configuration
  Routers That Should Not Be Used
Switches
Ubiquiti ER X Configs
How To Disable SIP ALG
Networking Disasters
OpenVPN on Grandstream Phones
Port Forwarding / External Remote Phones

Customer Admin Portal
Login
Dashboard
Coms
  Fax
  SMS/Text
  E-Mail
Configuration
  Basic Mode
  Extensions-Adding
  Extensions-Function
  Groups
  Receptionists
  Schedule
  Hold Music
  Advanced Mode
  PA Ring Tone
  Recordings
  Keys
  Tricks
My Services
  Numbers
  Lines
  International Calling
  e911
  Conference
  Backup
  Call Recordings
  Phonebook
My Account
  Overview
  Account Info
  Options
  Payment
  Wallet
  Reports

Functions & Advanced Features
Schedule Override
External Storage: USB
Hold vs Park
Hunt Groups
Paging
Line Emulation
Relay/Door/Alarm Control
Feature Code List
Voicemail
Grandstream Wave
Zoiper

Hardware
Hello Hub V2
Hello Hub Nano - Cloud Connector
Supported Phones (Auto-Config)
Grandstream HT801/802 Tricks
Pairing Instructions for DP750/752
Grandstream WP820
PA Speaker (SIP) Configuration

Deprecated
Hello Hub V1
Hello Hub V1 Battery Removal
Manual Config Phones

Advanced
Troubleshooting
Reliability
Switching Loops
Email Notes

Policies
Payment Policy
Cancellation

System Variants
System & Hardware Variants

Required
Terms and Conditions
Software Licensing

Useful
Blog and Rants
HIPAA
Recording Phone Calls & Conversations

Menu

blog:network_growing_pains

Network Growing Pains

Dear E.

You've been with us a long time, we have seen each others businesses grow. I have respect and admiration for the journey you have made. It's time for a technology reality check.

Your network at your new location is lacking. Lets start with our Reliability and Stability basics. You are using your cable company router for main phone system network, it is providing DHCP (Addresses for devices) and all NAT (Network Address Translation) and firewalling for all of your phones and some other devices, plus the network behind the SonicWall that most of your office is on. You can't manage the cable router, you can't reserve an address for your Hello Hub specifically, so every time there is a glitch, reboot or power outage, everything gets new addresses. This is the number one reason some phones have to be reconfigured constantly. The Hello Hub must find the phones and configure them constantly. This device is also simply overloaded providing NAT and services to 80+ devices.

At the physical level, you seem to have network connection problems at specific locations. You have tried swapping phones and ethernet cables to the wall jack, and the same locations often need a phone reboot, to get an address and join the network again. This is symptomatic of physical wiring or ethernet switch problems. It could be something like: ethernet cables wrapped around/over building wiring that causes a problem when the florescent lights go on and off or a “switching loop”.

My recommendations:

You need a good network tech. That person will want to:

  • Put your cable modem in “bridge” aka “public IP mode” - At no point should you be “double-natted” like you are now.
  • Install a modern business grade firewall/router capable of handling your traffic. I recommend Ubiquiti equipment a lot, current Sonicwall and other gear would also work. Specifically, you have grown past commodity consumer or pro-sumer equipment. Your tech should have experience and knowledge with the product they recommend.
  • Test and repair your existing cabling. We see a lot of variability of ping times, indicative of poor wiring. I use a slightly older version of Fluke Cable Testers but I've installed thousands of drops in my past, Your network tech should have an actual tester, not just plug things in and say 'works for me'.
  • Evaluate your network switches. They might be fine, you might need some upgrades. It might be as simple as noticing that you have what is called a “switching loop” and relocating some cables.
  • WiFi AP's.. Your network tech should have experience with and recommend business grade high density WiFi Access points. Again, I like Ubiquiti WiFi, but Cisco and other vendors provide solid WiFi AP's. These should be wired back to your main ethernet switch. In no case should a real business use “mesh” or “repeater” technologies. Good campus/business WiFi AP's provide coverage as a team, over wide areas, with seamless hand-off. Using your overloaded cable company router for WiFi is the main problem with your WiFi phones.

Respectfully Submitted, –Mike Harrison– Chief Technologist at ring-u.com and an old experienced network geek.

blog/network_growing_pains.txt · Last modified: 2022/06/10 16:53 by mike