G4 Communications ensures dependable, prompt and courteous service. We understand that you rely on us for your critical communications needs, and because of this we are committed to exceeding your expectations. G4 Communications guarantees our services with industry-leading service level agreements (SLAs), comprehensive customer care, 24x7x365 network monitoring.

For voice service support you can quickly contact us by entering 611 from your G4 phone, calling 1-888-840-4487 for main line and 1-603-703-0405 for direct customer support line, or email us at

Our customer care center is available between 7am - 10pm Monday through Friday, 9am - 3pm on Saturdays, and 10am - 4pm on Sundays. Our Network Operations Center is available 24 hours a day, 7 days a week.

Voice Service Reference:

• Support: Dial 611 from a G4 phone or 603-703-0405
• Remote Access Call Forward (RACF): Dial 603-703-0023
• Voice Mail Access: Dial 603-703-0086, http://voicemail.g4.net/
• View your call usage on-line

Voice Service Documents:

G4 Telephone Feature Codes: PDF

Find out how use your telephone more effectively.

G4 Telephone Feature Pricing: PDF

Find out telephone service feature pricing.

G4 Small Business Line Hunt Group II: PDF

In this document SBLHG functionality is explained.

Understanding Your Voice Statement

In this document, different charges on your voice bill is explained.

Information for Carriers:

• CSR Requests:
• LSR Requests: