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Lawful Interception Offering
Surf Proprietary Information
Presentation Highlights
 Company Profile
 Offering for Lawful Interception Market
 Roadmap for Lawful Interception Market (Video)
 Summary
Presentation Highlights
 Company Profile
 Offering for Lawful Interception Market
 Roadmap for Lawful Interception Market (Video)
 Summary
Surf Company Profile
 Established in 1996
 Headquartered in Israel
 Leading provider of Media-over-Packet solutions
 Telecom Industry
 Focused on media processing
 Voice
 Video
 Data (Fax/Modem)
 Solutions for PSTN, IP, Mobile networks
 DSP, chip- and board-level solutions
 Lawful Interception Market
 LI interception modules for PSTN, IP, Mobile networks
 Customers: Major LI manufacturers in Europe and Israel
Customer Base
 Surf customers include:
N M S COMMUNICATIONS
 Surf customers place repeat orders
 Field-proven telecom and LI HW/SW system solutions
 Worldwide support and maintenance
Presentation Highlights
 Company Profile
 Offering for Lawful Interception Market
 Roadmap for Lawful Interception Market (Video)
 Summary
Surf Offering for LI Market
 2-Wire Active/Passive Interceptor
 PSTN (4-Wire) Interception SW module for Modem and
Fax transmission
 ISDN Framing Interception SW module
 Mobile Interception (GSM) SW module for Data and
Fax transmission
 IP Interception SW module
2-Wire Active/Passive Interceptor
 PCI card installed in a PC® between client side and CO
 Built from Probing module, CO/Clients modules
 The Interceptor “listens” to the 2-wire line
 Continuously delivers the samples/Modem data to the host
application
 On/Off-hook detection
 The Interceptor has four RJ-11 POTS
 Record two separate calls simultaneously
2-Wire Interceptor - States
Supports twoPassive
states: State
Passive and Active
Modem
Host
Controller
Samples
Client
Side
2-Wire Interceptor
Fax
Central
Office
PSTN
Phone
1. During Voice and Fax calls, the interceptor “listens” to the 2-wire line in
Passive (default) state.
2. The Interceptor delivers samples to the host application.
2-Wire Interceptor – States
Active State
Modem
Host
Controller
Demodulated
Data
Client
Side
2-Wire Interceptor
Fax
Central
Office
PSTN
Phone
1. When the Interceptor identifies a Modem call, it switches into
Active state.
2. The Interceptor delivers demodulated data to the host PC.
2-Wire Interceptor – Active State
 The Interceptor determines the protocol used from
client to CO
 Data-pumps: V.92, V.90, V.34, V.32(bis)
 EC: V.44, V.42, MNP5
 DC: V.42bis, MNP2–4
 Emulates a CO Modem (subscriber view)
 Emulates a client Modem (CO view)
 Outputs the demodulated data in PPPD format to the Host
2-Wire Interceptor – Passive State
 The Interceptor outputs samples from the 2-wire:
 On/Off-hook detection
 Fax V.34HD and fallbacks
 Voice
 V.22 and fallbacks
 Surf offers an optional module (runs on a PC)
 Converts Fax samples into TIFF pages
PSTN (4-Wire) Solution Concept
Two sets of PCM streams
Modem
Central
Office
Client
Side
Fax
4-Wire SW
Probe
PSTN
Phone

The Probe is a software-based solution installed at the CO

Can be used in “Off-Line” or “Real-Time” mode (multi-thread)

Based on Surf’s long-standing field-hardened telecom technology
PSTN (4-Wire) Solution
 Receives PCM data from the digital portion of the CO
 Support two types of calls
 Modem
 Fax
 For Modem calls:
 Converts the PCM data into PPP frames
Modem
 For Fax calls:
 Converts the PCM data into TIFF pages
Fax
PSTN (4-Wire) Solution
 Modem Probe Processing
 Data-pump: all of ITU-T V series: V.92 and fallbacks
 Error correction: V.42bis, MNP2-4
 Data compression: V.44, V.42bis, MNP5
Modem
 Available for PC, consuming ~100MCPS per channel
 Fax Probe Processing
 Data pumps: V.34HD, V.17, V.29, V.27ter, V.21 Protocol:
 T.30
 Extraction of T.4 parameters based on T.30
 NSF: Supports decoding of several known
non-standard features
 T.4 extraction: MH, MR, MMR with all available types
 Available for PC and TI C6x DSPs
Fax
ISDN Framing Probe
 Software-based probe
 Possible inputs:
 ITU-T V.110 streams
 ITU-T V.120 streams
 Output:
 Data retrieval from input streams
GSM/UMTS Circuit-Switched Probe
3.1K Audio
Modem
Mobile Core
Network
Mobile
Terminal
ETSI/3GPP
Standards
Control
IUT-T
V.
Standards
MSC
Mobile Radio
Network
PSTN/ISDN
A-Interface
TDM stream
ISDN
Modem
GSM/UMTS CS Data Probe
 The Probe is a software-based solution for MSC-BSC/RNC
 Can be used in “Off-Line” or “Real-Time” mode (multi-thread)
PSTN Fax
Machine
GSM/UMTS Circuit-Switched Probe
3.1K Audio
Modem
Mobile Core
Network
Mobile
Terminal
ETSI/3GPP
Standards
IUT-T
V.
Standards
Control
MSC
PSTN/ISDN
Mobile Radio
Network
A-Interface
TDM stream
Two sets of
PCM Streams
GSM/UMTS CS Data Probe
 Optionally supports 4-wire probe solution
 Full Mobile-to-PSTN/ISDN interception solution
ISDN
Modem
PSTN Fax
Machine
GSM/UMTS Circuit-Switched Probe
3.1K Audio
Modem
Mobile Core
Network
Mobile
Terminal
ETSI/3GPP
Standards
IUT-T
V.
Standards
Control
MSC
Mobile Radio
Network
PSTN/ISDN
IWF
A-Interface
TDM stream
Two sets of
PCM Streams
GSM/UMTS CS Data Probe
 Based on Surf’s field-proven and deployed IWF technology
ISDN
Modem
PSTN Fax
Machine
GSM/UMTS Circuit-Switched Probe
 Supports 2/2.5/3G wireless gateway interceptor
 A-Interface input streams towards 2G/2.5G Radio network
 TDM input towards 3G MSC (A-TRAU’)
 Compliant with ETSI relevant specification
 Data towards 2G/2.5G
 Modified ITU-T V.110, according to TS 48.020
 A-TRAU, according to TS 48.020
 High-speed circuit-switched data (HSCSD) support
 Split/Combine, multiplexing function as defined in TS 44.021
 Up to 4 sub-streams per input stream
 Data towards 3G
 A-TRAU’, as defined in TS 29.007
GSM/UMTS Circuit-Switched Probe
 Supports Non-Transparent Bearer Services (Data)
 RLP version 0, 1 and 2 according to 3GPP TR 24.022
 Supports Handover
 Switching from one rate adaptation scheme to another
 Transparent Fax Service
 Modified V.110 (with HSCSD), A-TRAU for Fax Service
 GSM 03.45 Mobile Fax Relay
 Generates TIFF images
 Automatic Discrimination of Input Streams
 Transparent and non-transparent data
 Diverse radio channels
IP Interception Concept
IP Phone/Fax
Modem
Voice &
Video GW
Voice &
Video GW
IP
Client
Side
Fax
Media
processing
board
Media
processing
board
IP Captured
Streams
Phone
IP Interceptor Probe
 The probe is a SW-based solution for Fax/Data IP streams
 Can be used in “Off-Line” or “Real-Time” mode (multi-thread)
 Can get IP-captured input from anywhere in the “IP Cloud”
Supported IP Payload Interception
IP Captured
Streams
IP Interceptor Probe
TIFF
 FoIP Output: TIFF Pages
Supported IP Payload Interception
IP Captured
Streams
IP Interceptor Probe
De-Modulated
data to PPPD
 MoIP: PPPD Format (out of demodulated data)
IP Interception – FoIP
 Interception of FAX pages over IP traffic
 Input: Captured IP traffic file
 Output: TIFF file or raw bits
(e.g. for encrypted fax)
 Full support
 T.38
 G.711 (over UDP/IP)
IP Interception – MoIP
 Interception of Modem data over IP traffic
 Input: Captured IP traffic file
 Output: PPPD files
 Full Support
 VBD (Modem over G.711)
Video LI Roadmap
3G324M
Video
Phone
H.324
Video
Phone
Voice &
Video GW
Mobile
PSTN
Media
processing
board
IP
SIP Video
Phone
SIP Video
Phone
 Using Surf Voice/Video transcoding abilities to retrieve Video transmissions
Video LI Roadmap - Capabilities
 Supports Video retrieval from the following networks:
 Mobile – Video retrieval from 3G-324M stream
 PSTN – Video retrieval from H.324 stream
 IP – Video retrieval from IP Video stream
 Supported Video coders
 MPEG4
 H.264; H.263; H.261
 Video framing: RTP, H.223
Presentation Highlights
 Company Profile
 Offering for Lawful Interception Market
 Roadmap for Lawful Interception Market (Video)
 Summary
Summary
 2-Wire Active/Passive Interceptor
 PSTN (4-Wire) Interception SW module for Modem and
Fax transmission
 ISDN Framing Interception SW module
 Mobile Interception (GSM) SW module for Data and
Fax transmission
 IP Interception SW module
 Video Lawful Interception
Thank You
www.surf-com.com
Surf Proprietary Information