Patton electronic CopperLink 2160 Series - Manual (Page 74)

Setup Command Menu 74
Model 2160 Series Getting Started Guide 5 • Console and Telnet configuration
Mode
There are two types of Line mode:
• STU-C: Central Office (CO) terminal
• STU-R: Customer Premise Equipment (CPE)
Link
Select the line type for your model. Line type means how many wires you want to use on the CopperLink con-
nection. For example, you can select 2-wire, 4-wire or 8-wire line type for the 8-wire model.
Annex Type
Enter the appropriate Annex type. Annex AF describes the transmission and performance requirements for
North America. Annex BG describes performance and transmission requirements for Europe.
TCPAM Type
TCPAM (Trellis Coded Pulse Amplitude Modulation) is the standard used for line coding. Select the TCPAM
type. Auto is the default option for TCPAM.
Maximum Main Rate
Select the line rate for your model. The main rate is the multiple of 64kbps, 128kbps, or 256kpbs- depending
on your model type. Use
Table 19 to determine the best main rate for your model.
SNR Margin
SNR margin is an index of line connection quality. Generally, you won’t need to change the SNR Margin. You
can view the actual SNR margin in status command menu.You will experience better line connection quality
for larger SNR margin values.
For example, if you set the SNR margin ias 5, the line connection will drop and reconnect when the SNR mar-
gin is lower than 5. On the other hand, the device will reduce the line rate and reconnect for better line con-
nection quality. You may select the SNR margin from the range -10 to 21.
Table 18. Line Type Chart
Line Type
2-wire 4-wire 8-wire
Model
Type
2-wire model
•
4-wire model
• •
8-wire model
• • •
Table 19. Main Rate Chart
Model Type Multiple
TCPAM-16
= 3–60
TCPAM-32
= 12–89
TCPAM-64
= 90–177
2-wire model 64 192–3840 768–5696 5760-11328
4-wire model 128 384–7680 1536–11392 11520-22656
8-wire model 256 768–15360 3072–22784 23040-45312