Specifications

38 IBM Voice Over Frame Relay Perform Guide
Built-in Self Test: A built-in self-test can be performed on a voice port. To
perform the built-in self-test on voice port V1A:
VOICE_PORTS V1A BIT
Establishing Communications: With the LMI communicating with the frame
relay link and appropriately configured, verify the following:
• The green SYNC indicator is lit continuously.
• The red ALARM indicator is off.
• On the command console, the command prompt (Local>) appears at the last
line of the screen.
3.3.7 Configuring the DSUB
This section explains how to configure the Digital Subscriber (DSUB) card for use
with the IBM 9783. Before performing this procedure, place the DSUB offline. The
DSUB can be placed online after performing step 5, or anytime thereafter.
1. At the console, issue the following command to place the DSUB offline.
DSUB OFF
2. Configure the DSUB timing. If the device will reference the clock from the
network (IBM 9783 composite channel), configure the DSUB for network
timing by issuing the following command:
DSUB TIMING NETWORK
3. Configure the DSUB framing. T-1 applications use D4 or ESF framing. E-1
applications may require CRC_MF or TS16_MF to be disabled.
For T-1 applications that use D4, issue the following command:
DSUB FRAMING D4
For T-1 applications that use ESF, issue the following command:
DSUB FRAMING ESF
To disable CRC_MF, issue the following command:
DSUB FRAMING CRC_MF DISABLE
To enable CRC_MF, replace DISABLE with ENABLE in the command line above.
To disable channel-associated signaling for T-1 applications, issue the
command:
DSUB CAS DISABLE
To enable channel assisted signaling, replace DISABLE with ENABLE inthe
command line above. To disable TS16_MF, issue the following command:
DSUB FRAMING TS16_MF DISABLE
Disabling TS16_MF disables the E-1 equivalent of channel-associated
signaling and requires alternate signaling methods (such as common channel
signaling). To enable TS16_MF, replace
DISABLE with ENABLE in the command
line above.
4. Configure DSUB line coding. T-1 applications use AMI or B8ZS. E-1
applications use AMI or HDB3. To enable AMI, issue the following command:
DSUB LINE_CODE AMI
To use B8ZS or HDB3, instead, replace AMI in the command line above with
one of these selections.