ADDENDUM TO ISSUE 4 OF THE AXXESS MANUALOCTOBER 1997
Page 14 of 73
OPX Disconnect Enhancement
In previoussoftware versions, some sites had difficul-
tieswhen using a loop start T1 line configured for OPX
to connect two Inter-Tel systems and performing
“semi-networking” applications such as intercom ac-
cess, lighting message lamps, and shared voice mail.
The reason for the difficultyis that the T1 OPX does
not send a disconnect signal to the loop start trunk,
which caused trunks to be “locked up.”
The solutionwas to add a newflag inthe 4.3 software
version.The station flag, for single-linestations only, is
called“Send T1 OPX Disconnect Flash.” It sends a pro-
prietarydisconnect signal from the T1 OPX to the loop
starttrunk. (The “A” bit is toggled high for the duration
ofthe SL Disconnect Flash Durationtimer.) At default,
this flag is disabled.
The “Send T1 OPXDisconnect Flash” flag appears in
theStation Miscellaneous Flags screen and the Individ-
ual Station/Miscellaneous Flags screen below the
“OutsideParty Call Information Has Priority” flag. By
default the flag is disabled.
To use this new station flag, you must have a T1 Card
equipped with the proper firmware. The part numbers
forthe chipsare 827. 8664 (U4)a nd 827.8665 (U5). To
remind you, a warning will be displayed in Database
Programmingwhenever the flag is changed. The warn-
ing states that the flag will have no effect unless the
correctT1 firmware is installed on the card.If yourT1
Carddoe snot havethe proper firmware , there is an up-
grade kit available (part number 828.1423).
NOTE: This flag does not affect T1 channels config-
uredfor Loop Start. The refore, an Inter-Tel system can
be on the receiving end with T1 Loop Startchannels
and will recognize the disconnect. However, it cannot
send the disconnect — only an AXXESS with 4. 3so ft-
ware and T1 OPX can sendthe disconnect.
Advanced CO Interfaces PremiumFeature
Database Programming will not allow the system to
equip a T1/PRI Card unless thePremium Feature for
“Advanced CO Interfaces”is enabled.
Whena database is updated and the update program de-
tects that a T1/PRI card is equipped without the “Ad-
vancedCO Interfaces” premium featureenabled, it will
display an error message that says, “You have B-chan-
nels disabled. To activate the B-channels,turn on the
Advanced CO InterfacesPremium Feature.”
Trunk Group PRI Call By Call Feature
AXXESS trunk groups now provide limited access to
PRI Call By Call services. Each trunk group that con-
tains B channels can be assigned a PRICall By Call
featureto use for outgoing calls. The supported Call By
Call features include switcheddigital circuit services,
foreignexchange, TIE services, local exchange, OUT-
WATS, inter-exchange carrier services, and custom
AT&T and Nortel private networks,features, and ser-
vices.If the customer wishes to use more than one PRI
Call By Call feature, there can be multiple trunk
groups, each programmed to use a different feature.
The customer then can selectthe Call By Call feature
byselecting the trunk group associated with the feature.
When the trunk group has a programmed Call By Call
feature, all channels within the specified trunk group
will indicate the PRI Call By Call feature code in the
outgoing ISDN message. Each outgoing ISDN call
sendsa SETUP messageon the Primary Rate D channel
thatcontains the B channel (voice channel) assignment,
called digits information, and the network-specific fa-
cility. The PRICall By Call feature is specified within
the network-specific facility, ISDN information ele-
ment which contains theCall By Call feature code.
To properly program the PRI Call By Call feature, the
installer must analyze the customer’s ISDN outgoing
call traffic and configure the amount of B channels
needed to support a particular Call By Call feature or
service. In the service order, the installer must request
theCall By Call service for the PRI span or a subset of
channels.
Programming
The installer selects the Call By Call feature during
trunk group programming, as shown on the next page,
by selecting the desired feature from the PRI Call By
Call drop down box.
Afterthe trunk group has been created and assigned to a
Call By Call feature, the appropriate ISDNB channels
are programmed into the trunk group.
Operation
Thestation user dials ARS or a PRI trunk group exten-
sion. The AXXESS system selects the trunk group’s
programmed Call By Call feature. The AXXESS sys-
tem automaticallyinserts the Call By Call feature into
the ISDNcall control message and transmits the mes-
sageto the public network. The Public Network accepts
or rejects the requested Call By Call feature in the
ISDN message.