Patton electronic 2160 user manual Mode, Link, Maximum Main Rate

Model 2160 Series User Manual 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.

Model

Type

Table 16. Line Type Chart

		Line Type
	2-wire	4-wire	8-wire
2-wire model	•
4-wire model	•	•
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 256kbps- depending on your model type. Use Table 17 to determine the best main rate for your model.

Table 17. Main Rate Table

Model Type	Multiple	TCPAM-16	TCPAM-32	TCPAM-128
		= 3–60	= 12–89	= 2–239
2160 2-wire model	64	192–3840	768–5696	128–15296
2161 4-wire model	128	384–7680	1536–11392	256–30592
2162 8-wire model	256	768–15360	3072–22784	512–61184

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.

Setup Command Menu 77