Zyxel IES-1248 EE [129/544] Downstream and upstream

Zyxel IES-1248 EE [129/544] Downstream and upstream
IES-1248-51/51A/53 User’s Guide
129
CHAPTER 16
xDSL Port Setup
This chapter explains how to configure settings for profiles and individual ADSL ports. It also
covers how to configure virtual channels and virtual channel profiles.
16.1 ADSL Standards Overview
These are the ADSL standards and rates that the IES-1248 supports at the time of writing. The
actual transfer rates will vary depending on what the subscribers device supports, the line
conditions and the connection distance.
16.2 Downstream and Upstream
Downstream refers to traffic going out from the IES-1248 to the subscribers ADSL modem or
router. Upstream refers to traffic coming into the IES-1248 from the subscribers ADSL
modem or router.
Table 18 ADSL Standards Maximum Transfer Rates
STANDARD MAXIMUM DOWNSTREAM MAXIMUM UPSTREAM
G.dmt (IES-1248-51/51A) 8160 Kbps 1024 Kbps
G.dmt Annex B (IES-1248-53) 8160 Kbps 1024 Kbps
ETSI (IES-1248-53) 8160 Kbps 1024 Kbps
ANSI T1.413 issue 2 (IES-1248-51/
51A)
8160 Kbps 1024 Kbps
ADSL2 12000 Kbps 1200 Kbps
ADSL2 Annex M (IES-1248-51/51A) 12000 Kbps 2400 Kbps
ADSL2+ 25000 Kbps 1200 Kbps
ADSL2+ Annex M (IES-1248-51/
51A)
25000 Kbps 2400 Kbps

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