Knowledgebase

Knowledgebase Article

Knowledgebase > Unified Communications
What are the different Layer 1 states of the ISDN port?
Article Id #: 14
ISDN LAYER 1 STATES ISDN-PORT NETWORK MODE (NT1): State G1 = NT1 DEACTIVATED State G2 = NT1 PENDING ACTIVATION State G3 = NT1 ACTIVATED AND WORKING State G4 = DEACTIVATION REQUEST RECEIVED ISDN-PORT USER MODE (TE) State F1 = TE INACTIVE, NO POWERFEEDING State F2 = TE POWER FEED, WAITING FOR INFO 0 State F3 = TE DEACTIVATED State F4 = TE IS WAITING FOR SIGNAL State F5 = SIGNAL RECEIVED, SYNCRONIZATION State F6 = SYNCHRONIZED, READY FOR RECEIVING State F7 = ACTIVATED, WORKING State F8 = LOSS OF FRAME ALIGNMENT NOTE: THE ACTIVATION PROCEDURE CAN BE INITIATED BY THE TE OR THE NT. THE DEACTIVATION CAN ONLY BE INITIATED BY THE NT.

Company
> Contact Us
> About Patton
> Jobs
> Capabilities
> Quality & Responsibility
> Legal
News & Events
> Press Room/Releases
> Training & Events
> Library/Downloads

Partners & Resources
> Partner Programs
> Resources
> Blog

Products
Unified Communications
> VoIP Adapters
> Fax Adapters
> VoIP Gateways
> VoIP Routers
> VoIP IADs - Integrated Access Devices
> Enterprise Session Border Controllers
> Media Gateways
> SS7 Gateways
> Secure End Points (SIP Phones)
> VoIP Public Address & Mass Notification
Software and Cloud
> Virtual SBC | Virtualized SBC
> Virtual Access Router
> VPN Server
> IPv6 IPv4 Converter
> Intelligent Edge Orchestration
> NFV & SDN
Networking & Access
> Ethernet Extenders
> Industrial Switches
> Industrial Ethernet
> Unmanaged Industrial Ethernet Switches
> Managed Industrial Ethernet Switches
> Industrial PoE Switches
> PoE Extenders
> Industrial Network Solutions
> xDSL Products | DSL Modems, DSL VoIP, DSL Router Modems
> Routers
> Dial-Up Access

Sunset Products

Datacom Industrial Connectivity
> Industrial PoE Products
> Ethernet Over Fiber
> Line Drivers / Short Range Modems
> Wireline Analog Modems
> Pro AV Live & Media Broadcast Systems
> Fiber Serial DataCom (RS-232/422/530/188C)
> Fiber Telecom (T1/E1/PRI, Analog & ISDN)
> Multiplexers & Sharing Devices
> SFP (Small Form Pluggable) Modules and Kits
> Fiber Alarming, Notification, Relay & Control
> Other Network Extenders
> Defense/Security Fiber Communications
> Baluns
> Surge Protectors & Opto-Isolators
> DataTaps, Testers, Adapters, Rack Kits
> Interface Converters
> Fiber Rack & Enclosure Systems
> Fiber Repeaters & Wavelength Division Multiplexers (WDM)
> Waveguide RF Filters
> Power Supplies and Battery Systems
Media Transport
> Artel Racks & Chassis Infrastructure
> Video Over IP Transport
> Video Over Fiber Transport
> Video, Audio & Data Over Fiber Transport
> Video & Audio Over Fiber Transport
> Ethernet Over Fiber Transport
> Serial DataComm Over Fiber Transport
> Video, Fiber Testers & Splitters
> Wave Division Multiplexers
> Ethernet Switches
> SFP Modules and Kits

Support & Services
> Support Home
> Support Portal
> Premium Support
> Software Upgrades
> Warranty Services
> Returns & RMAs
> Manuals

Special Projects Group (SPG)
> SPG Home
> Services & Capabilities
> Projects
> Facilities

Sales: [email protected] / +1 301 975 1000
Support: [email protected] / +1 301 975 1007

Login	Connect With Us

Patton LLC Copyright © 2025 All Rights Reserved.

| Sitemap | Legal | Privacy Policy | Disclaimer |