PEF20550HV2.1XT Infineon Technologies, PEF20550HV2.1XT Datasheet - Page 364
PEF20550HV2.1XT
Manufacturer Part Number
PEF20550HV2.1XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.PEF20550HV2.1XT.pdf
(407 pages)
Specifications of PEF20550HV2.1XT
Lead Free Status / Rohs Status
Compliant
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Sent from XFIFO of SACCO-A to terminal A:
In most PBXs, a special digit is used for outside calls. In this example, the first digit did
not specify an outside call. Thus, the number of digits to follow is fixed (i.e. 3 more digits).
The P on the line card will collect these digits before deciding about passing them to
the group controller.
Received at RFIFO of SACCO-A from terminal A:
Sent from XFIFO of SACCO-A to terminal A:
Received at RFIFO of SACCO-A from terminal A:
Sent from XFIFO of SACCO-A to terminal A:
Received at RFIFO of SACCO-A from terminal A:
Sent from XFIFO of SACCO-A to terminal A:
6.1.4.5 Build-up of Layer 3
With layer-2 communications set up, terminal A initiates layer-3 build-up as follows:
Received at RFIFO of SACCO-A from terminal A:
Sent from XFIFO of SACCO-A to terminal A:
Received at RFIFO of SACCO-A from terminal A:
6.1.5
With layer-3 communication established, subscriber A can dial the desired link. Every
digit dialled is transmitted individually from the terminal via the D-channel to the SACCO-
A. If terminal A desires a link with a subscriber on another line card, the number dialled
is passed via the SACCO-B to the HDLC group controller. In the current example,
however, terminal A wishes to communicate with terminal B. The desired connection can
thus be looped within the ELIC.
6.1.5.1 Reception of Dialled Numbers at SACCO-A
Received at RFIFO of SACCO-A from terminal A:
Semiconductor Group
Dialling the Desired Link
364
I-frame: Set-up (with service
indicator)
I-frame: Set-up acknowledge
Receiver Ready (as
acknowledgement)
I-frame: 1
Receiver Ready (as
acknowledgement)
I-frame: 2
Receiver Ready (as
acknowledgement)
I-frame: 3
Receiver Ready (as
acknowledgement)
I-frame: 4
Receiver Ready (as
acknowledgement)
st
nd
rd
th
digit dialled
digit dialled
digit dialled
digit dialled
Application Notes
PEB 20550
PEF 20550
01.96
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