Users Manual

FCC ID YZZGBX20

Extension Module

Grandstream Networks, Inc.

1. FCC ID
2. Grandstream Networks, Inc.
3. YZZGBX20
4. Users Manual

Document ID #4400874

This document is available from the following links. Linking directly to FCC.gov may result in an error.

• https://apps.fcc.gov/eas/GetApplicationAttachment.html?id=4400874
• https://fccid.io/YZZGBX20/User-Manual/Users-Manual-4400874
• https://fccid.io/YZZGBX20/User-Manual/Users-Manual-4400874.pdf

Sending you directly to the document available from FCC.gov...