User`s guide

Dialogic
®
System Release 6.0 PCI for Windows
®
Release Update, Rev 62 — January 30, 2008 286
Dialogic Corporation
Known
(permanent)
IPY00007501 30091 JCT Boards A single 400 Hz tone can be erroneously detected as
a dual tone defined as 459±40 Hz, 330±40 Hz
because the DSP cannot detect dual tones that are
less than 60 Hz apart. It is recommended that the dual
tone be defined as 459±20 Hz, 330±20 Hz. This
restriction is only for certain call progress tones
including disconnect, extra dial tone, local dial tone,
international dial tone, ringback, busy, and fax.
Rationale: The DSP cannot reliably detect dual tones
that are 60 Hz apart. In order to compensate, the
firmware sets up a “twin” tone. A twin is a single
frequency tone that will be reported to user
applications as the dual tone. The frequency range of
the twin tone is based on the frequency of the dual
tone. For example, if the disconnect tone is set up as
330±40 Hz and 459±40 Hz, the maximum low
frequency is 330 + 40 or 370 Hz and the minimum
high frequency is 459 - 40 or 419 Hz. As these two
frequencies are only 49 Hz apart, a twin frequency will
be set up. In this case, the twin will have a lower bound
of 359 Hz and an upper bound of 430 Hz. If the
channel is presented with a single tone in this
frequency range, it will be reported to the user
application as a disconnect tone.
Known
(permanent)
IPY00022130 22957 PBX Integration The Dialogic
®
PBX Integration Board (D/82JCT or
D/42JCT) MUST be the Primary Master in the system
deriving reference from its Frontend. Any other
configuration will result in frame slips which will cause
the board and PBX to run out of synch and data to be
lost. This is dictated by the PBX hardware design.
Known
(permanent)
IPY00022119 22259 PBX Integration The Dialogic
®
PBX Integration Board (D/82JCT or
D/42JCT) MUST be the Primary Master in the system
deriving reference from its Frontend. Any other
configuration will result in frame slips which will cause
the board and PBX to run out of synch and data to be
lost. This is dictated by the PBX hardware design.
Known
(permanent)
IPY00021449 31707 Protocols When running R2MF PDK protocols on Dialogic
®
DM3
Boards under a flexible routing configuration, as you
increase the density across multiple boards, connect
failures may increase when an off-board voice/media
resource is used for call control. These failures can be
reduced by using a voice/media resource from the
local board that is doing the call control and not from
any other board in the system.
Table 9. Issues Sorted By Type, Dialogic
®
System Release 6.0 PCI for Windows
®
(Continued)
Issue Type Defect No.
PTR
No.
SU
No.
Dialogic
®
Product(s) or
Component(s)
Description