More router manuals added

Added links to the following router and gateway manuals:

- AT&T: 4 replacement/self-install guides

- Linksys: 1 user manual

- Technicolor: 5 user manuals, 1 open source report

- Verizon: 1 installation guide

- Westell: 1 remote management device reference guide

Cox router and gateway manuals

Self-installation guides:
- Vertiv WiFi Modem / Non-WiFi Modem (2017)

Easy Connect guides:
- Panoramic Wifi Gateway (model not specified)
- Technicolor CGM4331 / CommScope TG4882 Panoramic Wifi Gateway
- Technicolor CGM4331 Panoramic Wifi Gateway for Fiber
- Technicolor CGM4981 Panoramic Wifi Gateway
- Technicolor CGM4981 Panoramic Wifi Gateway for Fiber

Vertiv router, modem, and network device manuals

The links below include both customer and technician manuals for Vertiv networking equipment.

Installation manuals:

- Vertiv MCA Interface Options for Lorain Power System (2018)

Installer and user guides:
- Vertiv Avocent ACS6000 Advanced Console Server (2017)

- Vertiv Avocent ACS800/8000 Advanced Console System (2020)
- Vertiv Mass Firmware and Configuration Update Tool for Liebert Communications Card (2019)

Quick installation guides:

- Vertiv Intelligence RDU Gateway (2018)

Self-installation guides:
- Vertiv WiFi Modem / Non-WiFi Modem (2017; for Cox)

AT&T network device manuals

User guides:
- AT&T 3G MicroCell (Dec 2010, Rev E)
- AT&T MicroCell (Oct 2013, Rev G)

Self-installation guides:

- AT&T Internet and Phone Wi-Fi Gateway Replacement - UV Pace 5268 with Voice (2017)

- AT&T Internet Wi-Fi Gateway (2017)

- AT&T Internet Wi-Fi Gateway Replacement - UV Pace 5268 without Voice (2016)

- AT&T U-verse Wi-Fi Gateway Replacement - UV Pace 5268 without Voice (2015)

- AT&T Wi-Fi Gateway Replacement - BGW210 with Voice (2017)

- AT&T Wi-Fi Gateway Replacement - Pace 5168 WG HSIA (2016)

10 router and networking guides added

10 more manuals for routers and other networking devices were added recently:

- Cisco: 1 router configuration guide
- Linksys: 1 router user guide
- Netgear: 1 router user guide
- TRENDnet: 2 router quick installation guides, 1 access point quick installation guide
- Westell: 3 router guides, 1 remote site management device configuration guide

Hawaiian Telcom router and networking guides

Installation diagrams:
- Westell 7500 Wireless Router

Other documentation:
- Securing and Naming Your Hawaiian Telcom High Speed Internet Wireless Connection
- Westell 7500 LED Light Guide

Sagemcom router manuals

User manuals:
- Sagemcom 2864 VDSL Modem (VMedia)
- Sagemcom F@st 5260 Wireless Router (Spectrum, Apr 2017, V3.0)
- Sagemcom RAC2V1S 802.11ac Wave 2 Router (Spectrum, 2014)

Connection guides:
- Sagemcom Smart Router (Optimum)