Testing

Table 7-1. Test Status Messages (2 of 2)

Test Status Message

Meaning

 

 

Network-init. DSU LB

A DSU Loopback initiated by the network is currently active.

Active

H If the network service is 56 kbps, the network loopback is

 

 

non-latching. A non-latching loopback ends when the

 

network activation codes stop.

 

H If the network service is 64 kbps CC, the network loopback

 

is latching. This condition can only occur when the Network

 

Interface option Network-initiated DSU Loopback (64K CC)

 

is enabled. Refer to Network Interface Options, Table A-2.

 

 

No Test Active

Status message, indicating no local, remote, or network test in

 

progress.

 

 

Sending 511 on

A 511 test pattern is being sent over the network interface.

Network

 

 

 

Sending 511 on Port

A 511 test pattern is being sent over the DTE port.

 

 

V.54-initiated DSU LB

A DSU loopback is active that was initiated by the detection of

Active

a V.54 sequence originated by the remote unit. This condition

 

can only occur when V.54 Initiated DSU Loopback is enabled.

 

Refer to Network Interface Options, Table A-2.

 

 

Loopbacks

Loopbacks can be started from a variety of points in the network. Refer to

Table 7-2 for further information.

Table 7-2. Loopbacks (1 of 2)

Loopback Type

Initiated By

Notes

 

 

 

 

Bilateral Loopback

H

ATI

When enabled, running a DSU loopback

 

H

NMS

also automatically starts a local

 

loopback. Refer to Data Port Options,

 

 

Remote unit sending

 

H

Table A-3, to enable.

 

 

V.54 sequence

 

 

 

 

 

CSU Loopback

H

ATI (Network tests)

When initiated by the network, CSU

 

H

NMS

Loopback cannot be disabled by the

 

user. When IMC is enabled, the

 

 

DDS Network, by

 

H

aggregate data is looped back to the

 

 

loop current reversal

network.

 

 

 

 

DSU Loopback

H

ATI

When IMC is enabled, only user data is

(Digital)

H

NMS

looped back to the network. Refer to

 

Data Port Options, Table A-3.

 

 

 

 

 

 

 

Local Loopback

H

ATI

Control via CT141 can be disabled.

 

H

DTE via CT141

Refer to Data Port Options, Table A-3.

 

 

 

H

NMS

 

 

 

 

 

7-6

November 1997

7610-A2-GB20-10

Page 51
Image 51
Paradyne 7610, SNMP DSU manual Test Status Messages 2 Meaning, Loopbacks 1 Loopback Type Initiated By