Ds0 Loop-Around Test Call - Avaya MCC1 Maintenance Procedures

5 Listen for one of the following call progress tones:
If you get...
Dial tone or silence
Busy tone
Reorder tone
Intercept tone
Confirmation tone
NOTE:
For a definition of call progress tones, refer to Overview for Avaya Communication
Manager, 555-233-767.
6 Place a call. If the call does not go through (no ringing is heard), check to see if the circuit has
been removed or if the trunk is a rotary trunk.
The dial tone heard is coming from the far-end. If the far-end has been disabled, you will not hear
dial tone. However, depending on far-end administration, you may still be able to dial digits.
Every digit dialed after the port number is transmitted using end-to-end DTMF signaling. If the
trunk being tested is a rotary trunk, it is not possible to break dial tone.

DS0 Loop-Around test call

The DS0 loop-around feature provides a loop-around connection for incoming non-ISDN DS1 trunk data
calls. This feature is similar to the far-end loop-around connection provided for the ISDN test call
feature. This DS0 loop around is provided primarily to allow a network service provider to perform
facility testing at the DS0 level before video teleconferencing terminals are installed at the PBX.
The feature is activated on a call-by-call basis by dialing a test call extension specified on the second
page of the System Parameters Maintenance screen. No special hardware is required. When the test call
extension is received by the PBX, a non inverting 64-kbps connection is set up on the PBX's time
division multiplexed bus. More than one loop-around call can be active at the same time.
For calls routed over the public network using the ACCUNET Switched Digital Service (SDS) or
Software-Defined Data Network (SDDN), the data-transmission rate is 56 kbps since robbed bit signaling
is used. For calls established over a private network using common-channel signaling, the full 64-kbps
data rate is available.
On the Trunk Group screen:
• Set the communications type to data when the incoming trunk group is used only for data calls
(SDS).
• Set the communications type to rbavd (robbed bit alternate voice data) when the incoming trunk
group is used for robbed bit alternate voice and/or data (SDN/SDDN).
• Set the communications type to avd for private network trunks using common channel signaling.
Maintenance Procedures
December 2003
Additional maintenance procedures
Then...
The trunk is connected. Go to Step 5.
The trunk is either busy processing a call or
is out of service. Check
status trunk
The trunk requested is in a different port
network from your station, and inter-PN
resources are not available to access it.
The port addressed is not a trunk, or it is a
DID trunk, or the trunk is not administered.
The port is a tone receiver.
Facility test calls
.
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