Avaya S8700 Maintenance Manual page 202

Additional Maintenance Procedures
Reorder tone
Intercept tone
Confirmation tone
4. 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.
DSO 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 form. 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 form:
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.
5-16 Issue 1 May 2002
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. See
on page 5-17.
''DTMR Test Call''
555-233-143