ZyXEL P-660HW-D1 v2 User Guide - Page 34
support Annex M.
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Chapter 1 Introducing the ZyXEL Device Figure 1 Protected Internet Access Applications You can also use the ZyXEL Device to connect two geographically dispersed networks over the ADSL line. A typical LAN-to-LAN application example is shown as follows. Figure 2 LAN-to-LAN Application Example The ZyXEL Device is compatible with the ADSL/ADSL2/ADSL2+ standards. Maximum data rates attainable for each standard are shown in the next table. Table 1 ADSL Standards DATA RATE STANDARD UPSTREAM DOWNSTREAM ADSL 832 kbps 8Mbps ADSL2 3.5Mbps 12Mbps ADSL2+ 3.5Mbps 24Mbps " If your ZyXEL Device does not support Annex M, the maximum ADSL2/2+ upstream data rate is 1.2 Mbps. ZyXEL Devices which work over ISDN do not support Annex M. " The standard your ISP supports determines the maximum upstream and downstream speeds attainable. Actual speeds attained also depend on the distance from your ISP, line quality, etc. 34 P-660HW-Dx v2 User's Guide