PEB3322E-V14 Lantiq, PEB3322E-V14 Datasheet - Page 50

• Manufacturer Part Number: PEB3322E-V14
• Manufacturer: Lantiq

Specifications of PEB3322E-V14

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Figure 13
The AGC can be used to gain and to limit the level of the input signal. The limitation
should prevent clipping of the signal especially to be used with low bitrate encoders.
The HP in the decoder direction filters the DC part of the signal.
The far end LEC can be used to cancel the echo which occurs via the packet connection.
A global timer for the coder module automatically generates the timestamps for the voice
and event packets for all coder and signaling channels.
The packetized-voice protocol unit block is responsible for adding (upstream
direction) or deleting (downstream direction) a header containing the timestamp, the
packet time (PTE) and the coder configuration to the voice data.
The Voice Play Out unit is responsible for packet reordering, to estimate the optimum
jitter buffer size, to readjust the jitter buffer size, for clock synchronization, and
determines the play out times for the received packets. A fixed and an adaptive jitter
buffer is implemented. The maximum supported jitter buffer size is 200 msec, the
granularity for packets is 5 msec.
Preliminary Product Overview
Signals
Signal
Array
Any
5
I1
I2
I3
I4
I5
Coder Output
Coder Channel Module
Gain 2
AGC
Synchro-
nization
Gain 1
Clock
Far End
LEC
-
50
Encoder
HP
G.7xx
(VAD)
(CNG/BFM)
Decoder
G.7xx /
Voice Play Out Unit
Firmware Architecture
Buffer
Vinetic_1003_Coder_Module
Jitter
AAL2(ATM/DSL)
Rev. 2.0, 2004-05-11
Packetized
RTP(TCP/IP)
Protocol
Voice
Unit
Coder-Module
AAL2(ATM/DSL)
Depacketized
Protocol Unit
RTP(TCP/IP)
Voice
VINETIC
®