TRANSCODER DIGIUM CARD TC400 Series / TCE400 / TC400B


The TC400 Series cards are a bundle of the half-length, low-profile
TC400P (PCI) or TCE400 (PCI-E) base card and the TC400M voice
processing module. The TC400 Series cards are designed to handle, in
dedicated DSP resources, the complex codec translations for highly
compressed audio as would otherwise be processed by Asterisk in
software.
Asterisk, in software and with Digium® G.729a licensing, is capable of
transforming the G.729a codec into other codecs for the purposes of call
origination or termination, bridging disparate calls, or VoIP to TDM
connectivity. These transformations in software are very expensive, in
terms of MIPS, and require a substantial amount of CPU time to
accomplish. A TC400 Series card not only relieves the CPU of this duty,
freeing it up to handle other tasks or to complete additional call
processing; but also provides Asterisk with the capability of bridging
G.723.1 compressed audio into other formats, a capability not previously
possible.
The TC400 Series cards decompress G.729a (8.0 Kbit) or G.723.1 (5.3
Kbit and 6.3 Kbit) into u-law or a-law; or, compress u-law or a-law into
G.729a (8.0 Kbit) or G.723.1 (5.3 Kbit and 6.3 Kbit). The TC400 Series
cards are rated to handle up to 120 bi-directional G.729a transformations
or 92 bi-directional G.723.1 transformations. The TC400 Series cards do
not require additional licensing fees for the use of these codecs nor do
Digium, Inc. Page 12
Chapter 1: Overview
they require the registration process associated with Digium’s softwarebased
G.729a codec licensing.

Features:
120 channels of bi-directional G.729a (8 Kbit) transcoding
or
92 channels of bi-directional G.723.1 (5.3 Kbit and 6.3 Kbit) transcoding

 

TC400 Series / TCE400 / TC400B
tar -zxvf dahdi-linux-complete-current.tar.gz -C /usr/src/
cd /usr/src/dahdi-linux-complete-2.6.1+2.6.1
make && make install && make config
modprobe wctc4xxp
dmesg

_____________________________________

dahdi_transcode: Loaded.
wctc4xxp: tc400b0: Attached to device at 0000:00:0a.0.
wctc4xxp: tc400b0: (G.729a / G.723.1) Transcoder support LOADED (firm ver
= 6.12)
wctc4xxp: tc400b0: Installed a Wildcard TC: Wildcard TC400P+TC400M
dahdi_transcode: Registered codec translator ‘DTE Encoder’ with 92
transcoders (srcs=0000000c, dsts=00000101)
dahdi_transcode: Registered codec translator ‘DTE Decoder’ with 92
transcoders (srcs=00000101, dsts=0000000c)

__________________________
Install aserisk
./configure && make menuselect && make && make install && make samples && make config

/etc/dahdi/system.conf or /etc/dahdi/chan_dahdi.conf
mode = mixed -> enable 92 calls of G729 or G.723 (5.3Kbit and 6.3)
mode = 9729 -> 120 calls of G729a
mode = g723 -> 92 calls

mode module parameter dapat di set di /etc/modprobe.conf or /etc/modprobe.d/dahdi.conf
options wctc4xxp mode=g927
/etc/init.d/dahdi reload

asterisk tidak boleh running ketika reload dahdi
asterisk -vvvvc

> transcoder show
modproble dahdi_dummy

Akan menampilkan jumlah encoder and decoder yang teregister by TC400 Series Card

Asterisk issues errors such as “rtp.c: Unable to allocate socket: Too
many open files.” How can I prevent this?

Login sebagai user yang menjalankan asterisk
ulimit -n 32768

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shisdew

Listens until think alike

moses.spaceku@yahoo.com / voip ipbx

Hosted PBX, IP-PBX SOHO/ CALL CENTER, VOICE GATEWAY, VOICE CARD, COST EFECTIVE SOLUTIONS (LCR), GSM/CDMA GATEWAY

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