User guide

System Administrator’s Guide – Release 7.5
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Revised: April 9, 2013
Page 113
Configuration Hint
When using a Digital Line for circuit switched voice operation (PRI or RBS modes), it is
typically preferred to set all the Digital Line parameters including the functional
definition for each time slot on T1 line. Once this configuration has been set, each slot
configured to support circuit switch voice calls will appear as a new outside line. That
is, each separate slot configured for circuit switched voice calls is logically treated as a
separate telephone line. At that point, details of how that line is routed or configured
are set under the Digital Lines section found on the Phone System > Outside Lines
configuration page.
Parameters for each Digital Line are configured on the Network > Digital Lines >
Modify page for the specific line you wish to configure. It is important to provision
Digital Lines that are not going to be used as Disabled. The disabled state is the
factory default setting for each T1 line.
Parameter Description
Description
Description of the Digital Line interface. This description is
used in all other places this line is referred to, such as in the
Outlines Lines view and configuration pages of the phone
system.
Line Mode
The provisioned operational mode for this interface.
Currently, only T1 mode and Disabled are available. In the
future, additional options may be available such as E1 and
J1 for use in international markets outside of North America
Line Coding Mode
Both B8ZS and AMI modes are supported. It is strongly
recommended that B8ZS mode be used if the service
provider supports it. You must pick the setting that matches
the service provider’s setting, but lines should be ordered as
B8ZS, if the CO switch enables it.
Note: In AMI mode, clear channel data service is
not available and only a 56K data rate will be available on
each slot. Generally speaking a PRI line should always be
set to B8ZS mode.
Framing Mode
The Allworx server supports both Super Frame (D4) and
Extended Super Frame (ESF) modes. You must pick the
setting that matches the service provider’s configuration, but
it is recommended to have the service provider use ESF
mode, if available.
Clock Source
Enables specifying the Digital Line data clocking source
reference for this interface. Network clocking is almost
always the desired setting because the service provider will
be the source of the timing reference and the Allworx
interface will be the slave to that network clock. Internal
timing mode indicates that the Allworx device is the source of
the clocking time reference. This mode is useful if you are
going to hook two devices back to back. In that case, one
end needs to provide the clock reference and the other must
slave to that master. The exact terminology may vary from