Avaya 555-233-116 Setting parity on 7400A DCE, Enabling remote loopback testing on 7400A DCE

Data modules and asynchronous data units

2.If you pressed the ENTER/YES button at the SET LeadName LEAD? prompt, the LeadName -> ON? prompt appears. Press the ENTER/YES button.

LeadName -> ON?
	DATA	NEXT/NO	BACK	ENTER/YES
	●	❍	❍	➜ ●

Push the button indicated by the arrow (➜ )

3. Repeat until all leads have been set.

Setting parity on 7400A DCE

Next you need to identify the type of parity coding that the data module should expect. Parity is an error-detection scheme that is based on the value of a parity bit in each unit of information. Four coding schemes are used: ODD, EVEN, MARK, and SPACE. In odd-parity coding, the parity bit is set to 0 if the number of 1s in the information is odd, 1 if it is even. In even-parity coding, the parity bit is set to 0 if the number of 1s in the information is even, 1 if it is odd. Mark-parity coding always sets the parity bit to 1. Space-parity coding always sets the parity bit to 0.

1.Accept the default value, unless otherwise instructed. When the SET PARITY? prompt appears, press the NEXT/NO button to keep the default,

SPACE.

SET PARITY?
	DATA	NEXT/NO	BACK	ENTER/YES
	●	➜ ●	❍	❍

Push the button indicated by the arrow (➜ )

Enabling remote loopback testing on 7400A DCE

You can set the remote loopback option to GRANT or DENY.

1.Accept the default value, unless otherwise instructed. When the SET REMOTE LOOP? prompt appears, press the NEXT/NO button to keep the default, GRANT.

SET REMOTE LOOP?
	DATA	NEXT/NO	BACK	ENTER/YES
	●	➜ ●	❍	❍

Push the button indicated by the arrow (➜ )

66 Issue 4 October 2002 555-233-116