Installation manual

Part No. T0001-43, Rev B
February, 2003
Known Software Limitations Page 44 of 99
Digital Voice Server Card - Vanguard 6400 Series
T1/E1 Interface 5 will not get initialized if Interface 4 is not configured. T1/E1
Interface 7 will not get initialized if Interface 6 is not configured. (DRCaa21619)
Workaround: Always configure both interfaces even if only the second interface on
the card is used.
Packet Re-construction Statistic Running 8kbps is Inaccurate -
Vanguard 6400 Series
When the time for packets to reach DSP exceeds the smoothing-delay time, DSP
increments the reconstruct packet counter. With 60 voice ports configured and Voice
Activity Detection (VAD) turned on, excessive reconstructed packets are reported.
(DRCaa21596)
Workaround: At present, there is no workaround.
Received PRI Voice SETUP messages with Incompatible
Coder are Not Rejected - Vanguard 6400 Series
If a PRI Voice virtual port is configured incorrectly as U-Law (or A-Law) and
receives a SETUP from the PBX with the opposite bearer capability of A-Law
(or U_Law), the call is not rejected. When the call goes through, the audio quality is
unsatisfactory. (DRFaa15495)
Workaround: Be sure to configure the PRI Voice virtual port correctly to match the
PBX.
PAD Port Dynamic Configuration - Vanguard 6560, 6400 Series
When a node is configured for Dynamic Configuration, a PAD port running as a
PVC connection cannot switch to SVC mode unless the PAD port is dynamically
booted. If you fail to boot the PAD port dynamically, the port reverts to an unusable
state and you see these symptoms:
• The PAD port sends this error message: “Cannot forward data, there is no
connection.”
• There is no associated PVC entry in the PVC Connection Summary table.
• The PAD port statistics show Port State as PAD.
(DRFaa11231)
Workaround: At present, there is no workaround.
Configuring the Date in the Vanguard 6400 Series Products
In the Vanguard 6400 node record, the range for the Date/Year record is 1988 to
2100. Two limitations exists:
• On the Vanguard 6425, 6430, and 6450, if you enter a date and time beyond
Feb 6, 2037, 6:28:10, the node resets the date to an arbitrary date.
• On the Vanguard 6435 and 6455, if you enter a date between 2088 and 2100,
the node subtracts 100 years from the date and set the date to a value between
1988 and 2000. (DRFaa11666).
Workaround: At present, there is no workaround.