CTL Lx-Lite VoiceSupport - Manual (Page 29)

SMDI
VoiceSupport LX System Guide 2-15
Chapter 2 Installation and Setup
Aging - This value determines the maximum length of time (in seconds) that
the system will hold a received SMDI packet before the Voice mail will consider
the packet to be outdated.
The range is from 13 to 30 but the default of 12 will work in most phone
systems. You can change the default value if Voice Mail is experiencing any of
the following:
• The Voice Mail port receives ringing, but the serial port does not receive
an SMDI packet to match the ringing within the specified time frame.
• The serial port receives an SMDI packet, which it delivers to the Voice
Mail, but there is no call on the Voice Mail port for which the packet was
intended.
Before increasing the default value for aging, make sure that a delay in
receiving packets or ringing is not caused by a problem with the serial interface
or the connected phone system.
Significant Extension - This value refers to the maximum number of digits that
the Voice Mail will try to match to a mailbox number, when it receives an SMDI
packet. Set this value to match the number of digits in the longest mailbox
number in the Voice Mail system.
Negative Ack Buffer - This value specifies the number of negative
acknowledgments that the Voice Mail will accept in it’s buffer before it will reject
the SMDI packet. The range is from 12 to 24 but the default of 12 will work in
most phone systems.
Message Desk - This value specifies the number of valid Message Desk
packets that will be presented to the Voice Mail system. If you are using a
Fujitsu 9600 phone system, set this value to 0. If you are using SMDI through
Centrex, consult your local Centrex carrier.
Logical Terminal - This value specifies the logical terminal number (LTN) of
any Voice Mail port that is used for SMDI calls.
Active Comm Port - This value specifies which serial communication port will
be used for SMDI calls.
Note - The Comm Port Options should already have been set for the port that
you want to assign to SMDI. See Serial Communication Ports on page 2-12
Ignore Carrier Detect - The Carrier Detect signal (High or Low) shows that the
data carrier is being received from the distant modem. Yes enables the Ignore
Carrier Detect parameter, so that the Voice Mail will ignore a Carrier Detect
High signal during SMDI call processing. No disables the Ignore Carrier Detect
parameter, so that the Voice Mail will look for a Carrier Detect High signal
during SMDI call processing.
Do not enable this parameter when the Voice Mail is connected to a Centrex
SMDI. In this case, the Telco provides a modem connection to the
communications port, and this connection will establish Carrier Detect. Do not
enable this parameter when the Voice Mail is connected to any other interface
that links the communications port with another device, such as the phone
system.