Specifications

Chapter 6: Programming
Configuring a Single-Port/Dual-Port T1/E1/PRI Module (T1M/T1M-2)
Mitel
®
5000 Installation Manual – Issue 3.0, October 2008 Page 6-133
Operator System Access
(T1 PRI set for National ISDN2 only) If National ISDN 2 is selected, there is an option to enable
Operator System Access. Operator System Access (OSA) is required by some central offices. If
this flag is enabled, the user will be allowed to request access to an operator services system.
Retry ARS Call If Call Rejected
The Retry ARS Call If Call Rejected flag is for ISDN messaging for outgoing calls using ARS. If
set to “Yes,” the system retries the additional channels and trunk groups programmed in ARS if
the call is rejected by the Telco when receiving a specific cause value.
The symptom that will appear because of this flag is when an outgoing call is rejected by Telco,
where it causes the system (via ARS) to cycle through all the ISDN channels before releasing/
disconnecting the call.
This flag must remain enabled or set to “Yes” on T1 or E1 PRI circuits connected to Interprise
3200s. This flag is enabled by default. The flag should be disabled on Public ISDN circuits
connected to Telco. If not using ARS with ISDN services, this flag does not apply.
When this flag is set to “No,” the system does not retry the ARS call, regardless of the reason it
was rejected. If this flag is set to “Yes,” the system retries the ARS call as long as the cause of
the rejection is not one of the following events:
• Unallocated or unassigned number
• User is busy
• No user is responding
• Call rejected
• Number has changed
• Destination is out of order
• Number format is invalid
• There was a temporary failure
• Congestion in the switching equipment
• Requested circuit/channel is not available
• Outgoing calls are barred
• Incoming calls are barred
• Service or option not available, unspecified
• Service or option not implemented, unspecified
• Mandatory information element is missing
• Interworking, unspecified
Send International Toll Digits
If enabled, the system sends international toll digits (for example, 011) in the dial string in
addition to the number type. If disabled, the toll digits are stripped from the dial string for
international calls using ISDN trunks. You should enable this flag if the CO ignores the number
type. By default, this feature is Enabled, set to Yes.
IMPORTANT
If using ARS with National ISDN 2, and OSA is enabled, you must remove
Dial Rule #2 Echo Toll Field from the Operator and International Operator
Route groups.