Menu

Sign In

PORTAL HELP
- Portal help overview
- Control Center
  - Admin
  - Inventory
  - Orders
  - Service Management
  - Reports
  - Billing
  - Shop
  - General topics
- Globalview (DDoS Mitigation)
- Media portal
  - Portal Admin
  - My Services
  - Reports
  - Network Tools
  - Intelligent Traffic Manager
  - Support Tickets
  - Billing
  - General topics
  - Media portal API
- SD-WAN Versa portal
- Security Solutions portal
- Voice Feature Management
- VoIP portal
- Admin
- Inventory
- Orders
- Service Management
- Reports
- Billing
- Shop
- General topics
- Portal Admin
- My Services
- Reports
- Network Tools
- Intelligent Traffic Manager
- Support Tickets
- Billing
- General topics
- Media portal API
PRODUCT HELP
- Content Delivery Network
- Engage
- Network services
- Porting
- SD-WAN
  - SD-WAN with Cisco Meraki
  - SD-WAN with Versa Networks
- Security services
- Unified Communications and Collaboration (UC&C)
  - Amazon Chime
  - BlueJeans
  - Cisco Webex
  - Managed Event
  - Managed Video Conferencing
  - Ready-Access
  - Skype for Business
  - Web Meeting
  - Webcasting
  - Workplace
  - XPressMeet solutions
  - Zoom
- VoIP
- Vyvx
- SD-WAN with Cisco Meraki
- SD-WAN with Versa Networks
- Amazon Chime
- BlueJeans
- Cisco Webex
- Managed Event
- Managed Video Conferencing
- Ready-Access
- Skype for Business
- Web Meeting
- Webcasting
- Workplace
- XPressMeet solutions
- Zoom
- Installation
- Equipment (phones, ATAs)
- Business Communicator
- Contact Center Client
- Receptionist Console
READINESS
- Readiness overview
- Step 1: Confirm
- Step 2: Design
- Step 3: Build and test
- Step 4: Activate
- Step 5: Manage
- Product-specific readiness
- Handbooks
  - Asia Pacific (APAC)
  - Europe, Middle East, Africa (EMEA)
  - Latin America (LATAM)
  - North America
- Asia Pacific (APAC)
- Europe, Middle East, Africa (EMEA)
- Latin America (LATAM)
- North America

EXPLORE LUMEN CONTACT US

Lumen help

Home
VoIP
Equipment

VoIP: Grandstream phones

Download quick-reference guides and get support for your Grandstream DP series phones.

DP series

Download quick reference guide

Cisco 8800

Topics covered on this page:

Equipment

VoIP

Contact us
Sign in / pay bill
Lumen support

Portal help

Globalview (DDoS Mitigation)

SD-WAN Versa portal

Security Solutions portal

Voice Feature Management

Product help

Content Delivery Network

Security services

Step 1: Confirm

Step 3: Build & Test

Step 4: Activate

Product-specific readiness

About Us Accessibility Careers Contact Us Cookie Settings Legal Legal Notices Privacy Public Policy Support Canadian Ombudsman

Gender Pay Gap 2018 (UK) Legal (Latin America) Legal Notices (Germany) Modern Slavery Statement 2019 (UK) UK Tax Strategy

© 2021 Lumen Technologies. All Rights Reserved. Lumen is a registered trademark in the United States, EU and certain other countries.