Planet GRT-101 User Manual page 32

G.SHDSL Bridge/Router
GRT-101/401/402 User's Manual
Standby Mode
Only one of the two pairs is working; the other pair is standby as backup. If the working pair
fails, the standby pair will start up to continue.
Multi–Link Mode
For 4-wire model, each pair will connect to a two different remote device, which may or may not
be in the same location. The routers can be used to create a daisy chain or ring
network. Channel A used as CO side and Channel B used as CPE side.
4.1.3 TCPAM Type:
TCPAM stands for Trellis Coded Pulse Amplitude Modulation. It is the modulation format that is
used in both HDSL2 and SHDSL, and provides robust performance over a variety of loop
conditions. SHDSL.bis supports 16 level TCPAM line code(TPCAM-16) or 32 level TCPAM line
code(TCPAM-32) to provide a rate/reach adaptive capability, offering enhanced performance
(increased rate or reach) and improved spectral compatibility. The default option is Auto. You
may assign the different type manually by clicking the caption TPCAM-16 or TPCAM-32. Only
Annex AF and BG can apply using TCPAM-32.
4.1.4 Data Rate:
For 2-wire model (n*64kbps)
You can set up the SHDSL.bis data rate in the multiple of 64kbps.
The default data rate is 5696Kbps (n=89).
For using Annex AF or BG
TCPAM32 ; data rate is 192768Kbps ~ 5696Kbps (Nx64kbps, N=312~89)
TCPAM16 ; data rate is 192Kbps ~ 3840Kbps (Nx64kbps, N=3~60)
For using Annex A or B
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