Mitel Voice Processing Solutions Installation And Service Manual

El Digital Trunk Connectivity
On the receive side of the trunk, the Dual El trunk interface card demultiplexes the
voice, overhead, and signaling time slots to recover traffic data (voice information),
framing and error checking bits, and signaling data. It passes the PCM bearer
channels (with voice information) to the DSP 30 Digital Signal Processing line card
and signaling data (KM channel 16) to the SS7 Signal Processing card (Figure l-2).
MVIP BusChan 16
SS7 Data 1Channels l-15,17-31Traffic
11
II...

El Digital Trunk Connectivity
Integration With Analog ‘Trunk InterfacesThe El Digital Trunk Connectivity feature may coexist with analog trunks in the
same Series 6 server module. In such configurations, the voice channel cards are mix
of DSP30 line cards (used in conjunction with the El trunks), and LC8 line cards
(used in conjunction with the analog trunks). The Dual El digital trunk interface
and the 
DSP30 line cards interconnect through the MVIP bus. Configuration and
line group assignments for both...

El Digital Trunk ConnectivityEl Digital Carrier EventsThe Dual El digital trunk interface card detects failures on the trunk receive data
(RxD).When failures persists for more than 200 milliseconds, the carrier alarm
function automatically generates a remote alarm to the far end in accordance with
CCITT Recommendations G.732 and G.733. For such failures, the carrier alarm
function informs the signaling function that circuits on a failed digital trunk are
unavailable and in-process calls are terminated....

El Digital Trunk ConnectivityConfigurationDigital trunk connectivity configuration is done offline through the Physical
Resource Configuration Manager. Configuration for a Dual El card and for a
digital trunk connection consists of the following:
lSelecting the physical slot assignment for the card.
lSetting the module number in which the card is installed.
lConfiguring the I/O port address of the card
lSetting the signaling in use by the trunk.
lSetting the sequence number of the trunk.
lConfiguring the...

El Digital Trunk Connectivity
The Model 70 and Model 1201 servers each support only one digital trunk for a
maximum system capacity of 
30 PCM voice channels. The Model 120s server and
Model 640 server each supports up to 
I20 PCM voice channels (ports) between two
digital trunk interface cards.
You assign the slot at the Physical Resource Configuration Menu for the card you are
configuring.
Module NumberThe module number is the Series 6 server module in which the digital trunk interface
card is...

El Digital Trunk Connectivity
SignalingThe Series 6 server supports only CCS for CCITT recommendations and ANSI
specifications for digital trunk connectivity. And, currently only SS7 (CCITT C7) is
supported as the signaling optional feature integration.Refer to the 
SS7 Integration
Manualfor complete information.
You set El trunk signaling in the Select Trunk Type Menu. The menu has options
for both analog and digital trunks. However, when you are configuring a digital
trunk interface card, the...

El Digital Trunk Connectivity
The network reference is a selected El trunk. In the case of a Series 6 Model 70 or
Model 1201, the selected trunk will be trunk 0. In the case of Model 120s or Model
640, the selected trunk can be either 0, 
1, 2 or 3 (only one trunk can be selected).
The default reference is trunk 0.
The Series 6 server features automatic switchover to a backup clock source if the
primary fails. However, this feature functions only when both trunks of a Dual El
card are used and the clock...

2 Dual Tl Digital Trunk Connectivity
This chapter has a description and brief technical overview of the 
Tl digital trunk
connectivity available for Centigram Series 6 servers. It is provided both as an
introduction to the digital trunk connectivity feature and to provide planning and
installation guidance for retrofitting a Series 6 server with the feature.
Tl PCM Trunking OverviewThe Centigram Series 6 Communications Server includes 
Tl digital trunk
connectivity as a standard feature. This feature...

Dual Tl Digital Trunk Connectivity
frame has 24 
KM channels with 8 data bits in each time slot (channel) and,
including an extra bit as a start-of-frame marker 
193 bits makes up a completeframe.
Various framing formats have been developed for channel banks. All formats have a
framing bit in every 
193rd bit position.A unique bit pattern in the frame bit
position repeats every 12 frames to define a complete superframe (Figure 2-l). The
composite data rate of a frame is 1.536 Mbps. A f
raming bit...

Dual T1 Digital Trunk Connectivity
D4 Super Frame
1.5 msbFrame Frame Frame Frame Frame Frame Frame Frame Frame Frame Frame Frame Frame Frame
\;\,,/I/
i\
r
JyyT,-y
nsbTerminal Framing 1
FT Bit (Odd Frames)0
Signalling Framing0
FS Bit (Even Frames)
FS Bit I.D.A
Figure 2-1
msb
10
0
11
BAB
Tl D4 Frame Map
m
msb
101
0
2-3