User manual for the device ADTRAN MX2820-48 VDC M13 MUX. Online user manual database. Mar 23, 2012 - User manual Adtran MX2820. Free manual and PDF download. Got a question? Aks your question to other Adtran MX2820 users.Jan 24, 2015 - Adtran MX2820 Pdf User Manuals. View online or download Adtran MX2820 System Manual. Manual for MX2820, made by ADTRAN INC. (ADTRAN INC.) Page 8 MX2820 System Manual Section 8 Trouble Analysis Procedures This section provides information to assist in locating and identifying alarm conditions. NOTE: When provisioning the L5 MUX, use the menu tree on this Job Aid, rather than the manual, as there are some code differences in the MX2820 Manual. Jan 24, 2015 - Any brand names and product names included in this manual are trademarks, This revision of the MX2800 M13 Multiplexer User Manual has been updated to.