User's Manual Part 2
can temporarily disconnect your service. The telephone company will try to warn you in advance of any 
such disconnection, but if advance notice isn't practical, it may disconnect the service first and notify you 
as soon as possible afterwards. In the event such a disconnection is deemed necessary, you will be 
advised of your right to file a complaint with the FCC. 
From time to time, the telephone company may make changes in its facilities, equipment, or operations 
which could affect the operation of this equipment. If this occurs, the telephone company is required to 
provide you with advance notice so you can make the modifications necessary to obtain uninterrupted 
service. 
There are no user serviceable components within this equipment. See Warranty flyer for repair or warranty 
information. 
It shall be unlawful for any person within the United States to use a computer or other electronic device to 
send any message via a telephone facsimile unless such message clearly contains, in a margin at the top 
or bottom of each transmitted page or on the first page of the transmission, the date and time it is sent and 
an identification of the business, other entity, or individual sending the message and the telephone number 
of the sending machine or of such business, other entity, or individual. The telephone number provided 
may not be a 900 number or any other number for which charges exceed local or long distance 
transmission charges. Telephone facsimile machines manufactured on and after December 20, 1992, must 
clearly mark such identifying information on each transmitted message. Facsimile modem boards 
manufactured on and after December 13, 1995, must comply with the requirements of this section. 
This equipment cannot be used on public coin phone service provided by the telephone company. 
Connection to Party Line Service is subject to state tariffs. Contact your state public utility commission, 
public service commission, or corporation commission for more information. 
If trouble is experienced with this equipment, please contact (Agent in the US): 
Company Name: Grandstream Networks, Inc. 
Address: 126 Brookline Ave, 3rd Floor Boston, MA 02215, USA 
Tel: +1 617-566-9300 
Fax: 844-350-7572 










