Welcome to XO® Customer Care. The documentation and tools provided below will help answer any questions you may have regarding XO Communications’ suite of business services. Should you need additional support, feel free to contact Customer Care online.
General Customer Support & Tools
- All XO Communications Products
- XO Products Support
- 1.800.421.3872
- XO VPN and Firewall Products
- XO VPN & Firewall Support
- 1.866.295.9696
- Allegiance Telecom Products
- Allegiance Products Support
- 1.800.553.1989
- Customer Welcome Kit (PDF)
- XO Business Center Login
- XO Business Center Login for Allegiance Customers
- XO Hosting Gateway Login
- Know Your XO Bill Interactive Demo
Product Support & Tools
Data & Internet Services
Dedicated Internet Access (DIA)
- BGP Request Form for Allegiance Customers
- Customer Premise Equipment (PDF)
- DIA Access Configurations for Allegiance Customers (PDF)
- DIA Access FAQs for Allegiance Customers (PDF)
- DIA User Guide (PDF)
- Service Level Agreement FAQs (PDF)
- IP Request Form
Business DSL
Dial Access
- Access Finder FAQs (PDF)
- Dial Access Configuration for Allegiance Customers (PDF)
- Dial Access FAQs for Allegiance Customers (PDF)
- Dial Access POPs for Allegiance Customers (PDF)
- Enterprise Dial Admin Guide (PDF)
- Unified Dialer Admin Guide (PDF)
Voice Products
Local Services
- Basic Business Lines User Guide (PDF)
- Centrex User Guide (PDF)
- PS/ALI User Guide (PDF)
- Voice Features FAQs for Allegiance Customers (PDF)
- Voice Messaging User Guide (PDF)
- Voice Messaging User Guide for Allegiance Customers (PDF)
- Voice Messaging FAQs for Allegiance Customers (PDF)
- Voice Features Support for Allegiance Customers (PDF)
Long Distance
- XO One Managed iPBX Calling Card Instructions & Features (PDF)
- XO and Allegiance Calling Card Instructions & Features (PDF)
- International Calling for Allegiance Customers
- International Calling Card Wallet Guide (PDF)
- International Calling Card Wallet Guide for Allegiance Customers (PDF)
- Long Distance FAQs for Allegiance Customers (PDF)
Conferencing Services
- Audio Conference Scheduling
- Conferencing Services Users Guide (PDF)
- Document Conferencing Meeting Center Support (PDF)
- Document Conferencing Recording Editor (PDF)
VoIP Services
XO IP Flex
- XO IP Flex Care Center
- Online Feature Management Demonstration
- XO IP Flex Online Feature Management (login via Business Center)
Managed Services
MPLS IP-VPN
Virtual Private Network (VPN)
- Remote Access Client Version 3.6 Guide (PDF)
- Remote Access Client Version 4.0.x Guide (PDF)
- XO VPN Administrator Guide (PDF)
- XO VPN Technical Requirements Guide (PDF)















