Grandstream GXP2020 EXT Sidecar – New Compatibility

Is the GXP2020 Expansion Module compatible with the GXP2120/GXP2110 models?

Yes, it is compatible. However, the GXP2120/2110 has a special EXT port on the back which requires a different extension cable (Included with the GXP2020 Expansion Module).

The Grandstream GXP2020 EXT sidecar is now fully compatible with:

• Grandstream GXP-2110 4-Line SIP Phone
• Grandstream GXP-2120 6-Line SIP Phone

The sidecar now ships with (2) AUX cables so it can work with the older model GXP2020 as well as the NEW GXP2110 and GXP2120 models. You don’t have to specify anything special when ordering as this is already being included from Grandstream.