User Guide
Page 38
... they automatically adjust to either half-duplex or full-duplex mode depending on the bottom of incoming transmissions and adjust appropriately without manual intervention. ZyXEL Devices which work over ISDN do not support Annex M. The standard your device's key features. It allows data transfer of ...with "1" or "7" as the next to the last character (like the P-2602HWL-D1A or the P-2602HWL-D7A) denote a device that works over ISDN (Integrated Services Digital Network). Refer to the label on your ZyXEL Device does not support Annex M, the maximum ADSL2/2+ upstream data rate is 1.2...
... they automatically adjust to either half-duplex or full-duplex mode depending on the bottom of incoming transmissions and adjust appropriately without manual intervention. ZyXEL Devices which work over ISDN do not support Annex M. The standard your device's key features. It allows data transfer of ...with "1" or "7" as the next to the last character (like the P-2602HWL-D1A or the P-2602HWL-D7A) denote a device that works over ISDN (Integrated Services Digital Network). Refer to the label on your ZyXEL Device does not support Annex M, the maximum ADSL2/2+ upstream data rate is 1.2...