d-series voice transcoding training webinar

D-Series Voice TranscodingTraining Webinar

May 2011

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Today’s Speakers

Julien Nephtali

Product ManagerSangoma Technologies

Tel: +1.514.288.7111 x236@: julien.nephtali@sangoma.com

Lisa SzetoMarketing Events Manager@: lszeto@sangoma.com

Jeff DworkinDirector of Marketing@: jdworkin@sangoma.com

• Voice Transcoding Explained• Existing Transcoding Solutions• Sangoma Solution – D-Series Transcoding Card• Ordering and Pricing• Architecture• Technical Dive• Closing• Q&A

Agenda

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• Transcoding is the direct digital-to-digital conversion of one encoding to another

• This is usually done in cases where a target device does not support the format or has limited storage capacity that mandates a reduced file size, or to convert incompatible or obsolete data to a better-supported or modern format

• Transcoding is widely used in multimedia applications such as MMS, Streaming Video and VoIP

Definition of Transcoding

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• To save bandwidth, VoIP Network engineers sometimes compress the voice signal

• This is done using CODECs– COders – DECoders

• Codecs are algorithms (a lot of math) to compress and decompress voice signal– Similar to ripping a CD to MP3 – MP3 is a

codec• Sometimes called Vocoding

Function of Transcoding

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• Extensive List of codecs– G.711, G.729, GSM, AMR, G.726, iLBC,

G.722.1, etc.• Most common in use in wired world are:

– G.711 (64kbps)– G.729 (8 kbps)

• Most common in use in wireless applications:– GSM / AMR

• Growing in popularity – G.722.1 (HD voice)

Voice Codecs

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• End-points advertise their capabilities in the protocols (such as SIP)

Call Set-up in VoIP

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• I’m calling you.

• I can do G.711

• I can do G.711and G.729

• Let’s go ahead with G.711

SIP

Voice Call

SIP

Voice Call

• No common denominator - Call cannot be established • Need for a middleman to translate – Transcoding!

Sometimes, there is a mismatch

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• I’m calling you.• I can do G.711 • I can do G.729

SIPNo Call

TranscodingServer

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G.711 V

oice C

all

• I’m calling the phone on the other side

• I can do G.711 • I can do G.729SIP

• I have a call for you• What do you

support?

G.729 Voice Call1

2

3SIP

• OK. I will broker the call on both ends

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• Voice Transcoding Explained• Existing Transcoding Solutions• Sangoma Solution – D-Series Transcoding Card• Ordering and Pricing• Architecture• Technical Dive• Closing• Q&A

Agenda

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• Vocoding is complicated Math (or algorithms)• Math takes a lot of processing power• It does not leave much room for your telecom

application to run• Call only accommodate low port counts

Software Solutions for Transcoding

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Software Transcoding is CPU intensive that impacts the performance of your VoIP apps.

• Existing Solutions are only available for up to 120 channels

• Not available for lower densities• Short list of codec supported

– G.711– G.723– G.729

Current Hardware Transcoding Solutions

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• Voice Transcoding Explained• Existing Transcoding Solutions• Sangoma Solution – D-Series Transcoding Card• Ordering and Pricing• Architecture• Technical Dive• Closing• Q&A

Agenda

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Sangoma Solution – D-Series Boards

• From 30 to 2,000 transcoding sessions on a single board!

• Works with Asterisk® and FreeSWITCH®

• Simple API for application integration

• Works on Linux and Windows®

• Can be integrated or on separate dedicated server

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Sangoma Solution – D-Series Boards

• Ethernet Drivers– “Seen” as Ethernet board

by OS– Voice Traffic in and out of

Ethernet Port• Small Footprint

– Includes low profile bracket for 2U chassis

• D150 adds more deployment possibilities

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D-Series Boards - Supported Codecs

• Wireline Applications– G.711– G.722– G.722.1 (HD Voice)– G.723.1– G.726– G.729AB– iLBC

• Wireless Applications– GSM FR– GSM EFR– AMR– AMR-WB (G.722.2)

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D-Series Boards Support Any to Any Codec

Combinations

• Some Codecs are more complicated than others• Require more processing power

(more complicated math!)• Some examples

– G.711 G.729: 400 Sessions– G.711 AMR: 150 Sessions

Transcoding Capacity – “It Depends”

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Total Capacity depends on Codec mix

Sangoma Solution – D-Series Boards

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Product Sessions Options Specifications

D100 30 – 400PCI

• Media flows through PCI or PCIe bus• Compact form factorPCIe

D150 30 – 400

ETH• Media flows through Ethernet Port• Ideal for appliances with limited PCI

slots

BOX• Media flows through Ethernet Port• Stand-alone boxed enclosure with

external Power Supply• Stackable on 19 inch rack mount

PMC • Allows hardware manufacturers to integrate D150 via the PMC standard

D500 400 – 2,000 PCIe • Media flows through Ethernet Port• For larger scale deployments

• Voice Transcoding Explained• Existing Transcoding Solutions• Sangoma Solution – D-Series Transcoding Card• Ordering and Pricing• Architecture• Technical Dive• Closing• Q&A

Agenda

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Ordering and Pricing (D100)

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SKU Bus type Description List Price

D100-030 PCI 30 sessions voice transcoding card $ 7 5 0D100-030E PCI Express 30 sessions voice transcoding card $ 7 5 0D100-060 PCI 60 sessions voice transcoding card $ 8 7 5

D100-060E PCI Express 60 sessions voice transcoding card $ 8 7 5D100-120 PCI 120 sessions voice transcoding card $ 11 3 0

D100-120E PCI Express 120 sessions voice transcoding card $ 11 3 0D100-240 PCI 240 sessions voice transcoding card $ 1 6 4 0

D100-240E PCI Express 240 sessions voice transcoding card $ 1 6 4 0D100-400 PCI 400 sessions voice transcoding card $ 2 3 2 0

D100-400E PCI Express 400 sessions voice transcoding card $ 2 3 2 0

• Capacity upgrades are available in the field• Total port capacity rated for G.711 to G.729. Totals vary on call mix.• No extra licensing fees for Codecs*

* Except AMR. Please contact Sangoma Sales for details.

Ordering and Pricing (D150-ETH)

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SKU Description List Price

D150-ETH-030 30 sessions voice transcoding card $ 7 5 0D150-ETH-060 60 sessions voice transcoding card $ 8 7 5D150-ETH-120 120 sessions voice transcoding card $ 11 3 0D150-ETH-240 240 sessions voice transcoding card $ 1 6 4 0D150-ETH-400 400 sessions voice transcoding card $ 2 3 2 0

• Capacity upgrades are available in the field• Total port capacity rated for G.711 to G.729.

Totals vary on call mix.• No extra licensing fees for Codecs*

* Except AMR. Please contact Sangoma Sales for details.

Ordering and Pricing (D150-BOX)

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SKU Description List Price

D150-BOX-030 30 sessions voice transcoding card $ 8 0 0D150-BOX-060 60 sessions voice transcoding card $ 9 2 5D150-BOX-120 120 sessions voice transcoding card $ 11 8 0D150-BOX-240 240 sessions voice transcoding card $ 1 6 9 0D150-BOX-400 400 sessions voice transcoding card $ 2 3 7 0

SPEC-D150-BOX-1U06 1U Special Bracket that holds up to 6 D150-BOX $ 5 0SPEC-D150-BOX-2U14 2U Special Bracket that holds up to 14 D150-BOX $ 7 0

• Capacity upgrades are available in the field• Can be stacked on a 19 inch bracket .• Total port capacity rated for G.711 to G.729.

Totals vary on call mix.• No extra licensing fees for Codecs*

* Except AMR. Please contact Sangoma Sales for details.

Ordering and Pricing (D150-PMC)

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SKU Description List Price

D150-PMC-030 30 sessions voice transcoding card $ 7 5 0D150-PMC-060 60 sessions voice transcoding card $ 8 7 5D150-PMC-120 120 sessions voice transcoding card $ 11 3 0D150-PMC-240 240 sessions voice transcoding card $ 1 6 4 0D150-PMC-400 400 sessions voice transcoding card $ 2 3 2 0

• Capacity upgrades are available in the field• Total port capacity rated for G.711 to G.729.

Totals vary on call mix.• No extra licensing fees for Codecs*

* Except AMR. Please contact Sangoma Sales for details.

Ordering and Pricing (D100 and D150)

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SKU Description List Price

D1X0-UPG-030 Upgrade from 030 to 060 sessions $ 1 2 5

D1X0-UPG-090 Upgrade from 030 to 120 sessions $ 3 8 0

D1X0-UPG-210 Upgrade from 030 to 240 sessions $ 8 9 0

D1X0-UPG-370 Upgrade from 030 to 400 sessions $ 1 5 7 0

D1X0-UPG-060 Upgrade from 060 to 120 sessions $ 2 5 5

D1X0-UPG-180 Upgrade from 060 to 240 sessions $ 7 6 5

D1X0-UPG-340 Upgrade from 060 to 400 sessions $ 1 4 4 5

D1X0-UPG-120 Upgrade from 120 to 240 sessions $ 5 1 0

D1X0-UPG-280 Upgrade from 120 to 400 sessions $ 11 9 0

D1X0-UPG-160 Upgrade from 240 to 400 sessions $ 6 8 0

• Capacity upgrades are available in the field• Total port capacity rated for G.711 to G.729. Totals vary on call mix.• No extra licensing fees for Codecs*

* Except AMR. Please contact Sangoma Sales for details.

Ordering and Pricing (D500)

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SKU Description List Price

D500-100E 1 Transcoding module, up to 400 sessions, PCI Express Bus $ 2 4 5 0D500-200E 2 Transcoding module, up to 800 sessions, PCI Express Bus $ 4 3 2 5D500-300E 3 Transcoding module, up to 1,200 sessions, PCI Express Bus $ 6 2 2 5D500-400E 4 Transcoding module, up to 1,600 sessions, PCI Express Bus $ 8 1 0 0D500-500E 5 Transcoding module, up to 2,000 sessions, PCI Express Bus $ 9 9 7 5

D500- MOD-100 1 D500 Field Upgrade Transcoding Module $ 1 8 7 5

• Capacity upgrades are available in the field• Total port capacity rated for G.711 to G.729.

Totals vary on call mix.• No extra licensing fees for Codecs*

* Except AMR. Please contact Sangoma Sales for details.

• Voice Transcoding Explained• Existing Transcoding Solutions• Sangoma Solution – D-Series Transcoding Card• Ordering and Pricing• Architecture• Technical Dive• Closing• Q&A

Agenda

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Sample Application - Call Center

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PSTN LAN

G.711

G.711T1/E1

Computer Server

WANG.729

LocalAgents

RemoteAgents

Sample Application - Call Center

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PSTN LAN

G.711

G.711T1/E1

Computer Server

WANG.729

LocalAgents

RemoteAgents

Sample Application - Call Center“Under the Hood”

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PSTN

LAN

G.711

G.711T1/E1

Call Center

App

Computer Server

D-Series Transcoding

A108 T1/E1

WANG.729

LocalAgents

RemoteAgents

Integrated with Server

Sample Application - Call Center“Under the Hood”

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Computer Server

D-Series Transcoding

PSTNT1/E1 Call Center

App

WANG.729

RemoteAgents

LAN

G.711

G.711

LocalAgents

Separate Dedicated Server

Sample Application: PBX with HD (G.722.1) Phones

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PSTN

LAN

G.722.1

G.722.1

T1/E1

PBX

Computer Server

D-Series Transcoding

A101DE

G.722.1

Sample Application: PBX with HD (G.722.1) Phones

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PSTN

LAN

G.722.1

G.722.1

T1/E1

PBX

Computer Server

A101DE

G.722.1

Internal Call: Codec match, no need for

Transcoding

External Call: D-Series to

transcode G.722.1 to G.711

D-Series Transcoding

Sample Application: PBX with HD (G.722.1) Phones

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PSTN

LAN

G.722.1

G.722.1

T1/E1

PBX

Computer Server

A101DE

G.722.1

Internal Call: Codec match, no need for

Transcoding

External Call: D-Series to

transcode G.722.1 to G.711

D-Series Transcoding

Sample App: Network Peering

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SS7 GW

SS7 GW

SS7 GW

SS7 GW

SS7 GW

G.729 Network

G.711 Network

Dedicated Server with Several D500 to Support 1000s of Ports

TranscodingServer

• Voice Transcoding Explained• Existing Transcoding Solutions• Sangoma Solution – D-Series Transcoding Card• Ordering and Pricing• Architecture• Technical Dive• Closing• Q&A

Agenda

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Technical Dive

• Sangoma D-Series of Transcoding Cards• Ethernet Drivers

– PCIe – Broadcom– PCI – Micrel

• Sangoma Transcoding API Library• Codec applications on Linux

– Codec module for Asterisk– Codec module for FreeSWITCH

Media Transcoding Solution

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Single Server – Asterisk / FreeSWITCH

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API(libsng-tc)

Asterisk / FreeSWITCH Codec Module

Ethernet Driver

RTP(Voice)

Adapter(codec_sangoma)

SOAP server

SOAP client(libsngtc-node)

Control(SOAP TCP connection)

Board discovery at Install time

Distributed Architecture – Asterisk / FreeSWITCH

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API (libsng-tc)

Ethernet Driver

RTP(Voice)

SOAP server

Asterisk / FreeSWITCH Codec Module

Adapter(codec_sangoma)

Asterisk / FreeSWITCH Codec Module

Adapter(codec_sangoma)

RTP(Voice)

SOAP client(libsngtc-node)

TranscodingServerApp

Server

AppServer

SOAP client(libsngtc-node)

Control(SOAP TCP connection)

TranscodingServer

Distributed Architecture – “Cables View”

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AppServer

AppServer

LANEthernet

Ethernet

Ethernet

• Download Media Transcoding Package:http://wiki.sangoma.com/sangoma-media-transcodingeg: sng-tc-linux-x86-1.2.1.tgz

• Untar Package in /usr/src directory-> tar xfz sng-tc-linux-x86-<ver>.tgz -> cd sng-tc-linux-x86-<ver>

• Install Ethernet Drivers-> cd sng-tc-linux-x86-<ver> -> cd server/eth_driver-> ./install.sh

• PCIe cards use Broadcom tg3 driver: -> modprobe tg3PCI cards use Micrel ks8842_pci driver: -> modprobe ks8842_pci

• Once Ethernet drivers are loaded confirm that new interfaces have been created-> cat /proc/net/dev # check for eth1, eth2 …

• Give each ethX device a private IP address: eg: 10.100.1.1/24On RedHat: system-config-network

Media Transcoding: Installation

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• Build Sangoma Media Transcoding libraries, configurator and server-> cd sng-tc-linux-x86-<ver> -> make-> make install

or if you have Astersk installed on the system, also build Sangoma Asterisk Codec-> make asterisk-> make install

FreeSWITCH codec is part of FreeSWITCH GIT repository

• Asterisk Sangoma Transcoding Configuration:-> sngtc_cfg --server --asterisk or-> sngtc_cfg --server --asterisk --astdir=/etc/asterisk

Asterisk Sangoma Transcoding Config file/etc/asterisk/sangoma_codec.conf

• FreeSWITCH Sangoma Transcoding Configuration: -> sngtc_cfg --server --freeswitch or-> sngtc_cfg --server --freeswitch --fsdir=/usr/local/freeswitch/conf/autoload_configs

FreeSWITCH Sangoma Transcoding Config file:/usr/local/freeswitch/conf/autoload_configs/sangoma_codec.conf.xml

Media Transcoding: Installation ...

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• Firmware Upgrade Procedure

The sngtc_tool is a binary application that contains the latest firmware version.The sngtc_tool will upgrade firmware on all trancoding modules detected.

-> sngtc_tool –dev eth1 –firmware

• License Update Procedure

The License update program is not distributed in a sngtc release. It is provided to a customerwith a license key that is built using customer hardware information.

Customer needs to send Sangoma Support module their hardware information-> sngtc_tool –dev eth1 –list_modules

Based on this information, Sangoma Sales will send a package to the customer containinglicense update application and the license key. The sngtc_tool application contains the up to date license files which will be applied to all sangoma modules detected.

-> sngtc_tool –dev eth1 –license <license_key_file>

Media Transcoding: Firmware & License

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• Before starting Asterisk or FreeSWITCH, one must start theSangoma Transcoding Server. Server autodetects and initializes the SangomaTranscoding Cards. -> sngtc_server_ctrl start

Log file located in /var/log/sngtc_sever.logCheck for message: [SNGTC_INFO ] Sangoma Transcoding Server Ready

• Start Asterisk-> safe_asterisk

Load Sangoma transcoding module from CLI (If not automatically loaded)-> module load codec_sangoma.so

-> sangoma show translators-> sangoma show transcoding sessions-> sangoma show rtp statistics

Media Transcoding: Asterisk Operation

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• Before starting Asterisk or FreeSWITCH one must start theSangoma Transcoding Servier. Server autodetects and initializes the SangomaTranscoding Cards. -> sngtc_server_ctrl start

Log file located in /var/log/sngtc_sever.logCheck for message: [SNGTC_INFO ] Sangoma Transcoding Server Ready

• Start FreeSWITCH-> /usr/local/freeswitch/bin/freeswitch

Load Sangoma transcoding module from CLI (If not automatically loaded)-> load mod_sangoma_codec

-> show codecs-> sangoma_codec settings-> sangoma_codec sessions-> sangoma_codec stats <session number>

Media Transcoding: FreeSWITCH Operation

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• Software Transcoding is a CPU intensive activity that could impact your VoIP applications

• Sangoma’s D-Series Hardware Transcoding Cards handle all your applications transcoding with no added latency and work with Asterisk and FreeSWITCH

• The D-Series cards come in multiple form factors for added deployment flexibility

• The D100 and D150 offer from 30 to 400 sessions per card

• The D500 offer 400 to 2,000 sessions per card• All D-Series cards offer field upgrades options

Closing

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• Wiki.sangoma.com

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