The Cisco VG204 Analog Voice Gateway is now obsolete (past End-of-Life and End-of-Support status).
End-of-Sale Date: 2013-11-16
End-of-Support Date: 2018-11-30
Cisco's End-of-Life Policy
You can view a listing of available Cisco VG Series Gateways offerings that best meet your specific needs
If you want support information for the Cisco VG204 Analog Voice Gateway documentation, it may be available through Cisco.com Search or in the Cisco Community