Troubleshooting guide

Troubleshooting Guide
118
Incoming calls fail. Configuration error in Trunk forms. Verify in the Trunk Attributes form that there is an
Answer Point set up for non-DID trunks for Day
and Night services. For dial-in trunks, verify that
the “Dial in Trunks Incoming Digit Modification -
Absorb” field is set to 0 and that the “Dial In
Trunks - Incoming Digit Modification - Insert” field
is set appropriately for dial in trunks.
Access denied when
calling out on a PRI
trunk.
Programming error. PRI and MSDN trunks are considered to be
DPNSS by the system. The Class of Service
(COS) option “Public Network Access via
DPNSS” of the dialing device must be set to Yes.
(The default is No).
When dialing out on a
PRI trunk the call is
connected, however
no audio path is
established.
Programming error. In Trunk Attributes form, ensure that Release
Link Trunk is set to No.
Unable to forward an
incoming PRI call to an
external
destination.External
forwarding of an
incoming PRI call may
not be successful for
one of the following
reasons.
COS of the incoming PRI does not
allow Public-to-Public trunk
connection.
In the COS of the incoming PRI trunk, enable
Public Network to Public Network connection
allowed.
COR restriction against the COR of
the incoming PRI trunk in the ARS
route.
For COR restriction, ensure the COR number of
the PRI trunk is not included in the COR group
defined for the specified route in the ARS Routes
form. Note: You may need to refer to the Toll
Fraud control document Knowledge Base Article
# 04-1000-00060 “Using CDE to Prevent Toll
Fraud on the MN3300 ICP”.
Q.Sig Private network access is
enabled in PRI link descriptor.
For the link descriptor assignment used by the
PRI link, set Q.sig Private network access to
NO. (This option should not be enabled for normal
PRI, only if this link is intended for Q.Sig.).
Calls on PRI trunks do
not present outbound
name.
Not supported by protocol used on
the PRI trunks. Outbound name is
only supported by PRI trunks that
use DMS-100 or QSIG protocols.
Refer to Mitel Knowledge Base article
05-3849-00988
for a list of the protocols that
support outbound name.
QSIG ISO feature not
functioning.
QSIG feature not supported. For
unsupported QSIG features, the
3300 will not act as a transit switch.
See Mitel Knowledge Base article
06-5191-00064_1 for a list of the QSIG features
supported on the 3300 ICP
Table 34: Digital Trunk Troubleshooting
Symptom Probable Cause Corrective Action
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