Mitel Voice Processing Solutions Installation And Service Manual

Dual Tl Digital Trunk Connectivity
Channel Associated Signaling (CAS)Release 6.0 digital trunk connectivity for 
Tl supports only channel-associated
signaling for ground start, loop start E 
& M, and DID trunks. Neither facility data
link (sometimes used with ESF) nor remote 
loopback requests are supported.
Note:
VoiceMemo Release 6.OA does not support common channel
signaling (CCS)
with Tl trunk connectivity. CCS is a method
where signaling for all channels is handled using a link that is
common to all...

Dud Tl Digital Trunk Connectivity
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Bit Stream Waveformof l’sof O’sx1686vm6Figure 2-2DC Voltage Shift in Digital Signal Transmission
AMIAM1 (alternate mark inversion) is a simple technique which 
conyerts a unipolar
signal into a bipolar signal. It also inverts the second (and the fourth, sixth, and so
forth) of a long string of 1 
‘s (Figure 2-3).
101010011000111001
a. Bit Stream Code
b. Binary Signal (Unipolar)Logic 1
Logic 0
II1In Logic 11 
I- Logic 0
c. Polar (NRZ)d. Bipolar...

Dual T1 Digital Trunk Connectivity
AMI with ZCS
AM1 with zero code suppression is coding technique is similar to basic AM1 except
that the eighth 0 bit in a string of O’s is converted to a 
1 bit. This technique
interferes with the data when all zeros are transmitted. However, this is not a
significant problem when the data represents a voice signal and an occasional reversal
of a bit is not apparent in the overall voice signal quality.Of course, AM1 with ZCS
is a problem when transmitting data that...

Dual Tl Digital Trunk Connectivity
Tl Connectivity FeaturesSeries 6 servers Model 
120s and Model 640 can support a total capacity of 60 KMvoice-application channels per module.
Note:“Port” as used elsewhere in Centigram Series 6 documentation,
when used in the context of digital trunk connectivity, equates
directly to “PCM channel,” “channel,” and “circuit.”
Series 6 server Model 640 and Model 
120s modules can support up to two Dual Tl
Digital Trunk Interface cards with two trunks per module for Series...

Dual Tl Digital Trunk Connectivity
Dual Tl Trunk Interface CardThe Series 6 server uses a Model MB89 110 Dual 
Tl Trunk Interface Card. This
card is the interface for up to two (per card) 
Tl digital trunks. The interface card, an
AT bus-compatible adapter card, plugs into the server backplane in Series 6 Model
70, Model 1201 and Model 
12OS, and Model 640. The interface card supports
balanced (standard 
8-pin RJ-48C) trunk connections.
The 
Tl Digital Trunk Interface and the DSP24 line cards...

Dual Tl Digital Trunk Connectivity
Integration With Analog Trunk InterfacesThe 
Tl Digital Trunk Connectivity feature can coexist with analog trunks in the
same Series 6 server module. In such configurations, the voice channel cards will be
a mix of DSP24 or DSP8 line cards used in conjunction with a Dual 
Tl Trunk
Interface card), and LC8 line cards used in conjunction with the analog trunks.
Clock SynchronizationThe 
Tl clock can be synchronized either to a clock recovered from the network RxDsignal of...

Dual Tl Digital Trunk Connectivity
Tl Digital Carrier Events
.When the Dual 
Tl digital trunk interface card detects failures on the trunk receive
data 
(RxD). When ar ures persists for more than 2.5 seconds, the VoiceMemof ‘1carrier alarm function automatically generates a remote alarm to the far end. For
such failures, the carrier alarm functionality informs the signaling function that ports
on a failed digital trunk are unavailable and terminates in-process calls. Only after a
trunk is restored for 10...

Dual Tl Digital Trunk ConnectivityOut-Of-Frame (OOF) Alarm
When the Dual Tl trunk interface card detects a loss of frame synchronizationit
immediately attempts to reframe. A loss of frame is determined to have occurred
when the received data framing bits are in error two bits out of four. When the loss
of frame occurs, the digital trunk interface driver (the interface control software)
tracks the length of time the framing is lost and notifies all affected applications of
the OOF condition.
Note:A Blue...

Dual Tl Digital Trunk ConnectivityRed Alarm
A Red Alarm is asserted and the affected 
Tl carrier goes to a Carrier Group Alarm
state when the 
Tl interface detects that an OOF has persisted for more than 230.5seconds. A Yellow Alarm is also asserted as long as the 
TI remains in a Red Alarm
condition.
Carrier Group Alarm (CGA)
The CGA consists of the local node either being in a Red Alarm state or of receiving
a Yellow Alarm from the far end.(The Yellow Alarm from the far end indicates that
the far end...

Dual Tl Digital Trunk Connectivitymodule and physically installed the telephony card, configuration for adding a’ Dual
Tl card and for a digital trunk connection consists of the following:
lSelecting the physical slot assignment for the card.
lSetting the number of the module in which the card is installed.
lConfiguring the I/O port address of the card
lSetting the signaling used by the trunk.
lSetting the sequence number of the trunk.
lConfiguring the framing format (D4 or ESF).
lConfiguring the coding...