List of VoIP Phones: Softphones, Hard phones, Cordless

This page is for listing brief details of VoIP Phones including details, where to buy, specifications, and any other relevant VoIP Phone information. Please read the Posting Guidelines for Promoting Products and Services should you wish your product to be added.

General Voip Phones

3CX – Offers native softphones for Windows, a web client as well as smartphone clients for iOS and Android.
Asterisk SIP Telephones – US – Offers SIP Telephone for Asterisk.
Aastra – A complete line of enterprise grade SIP corded phones and wireless solutions. Supports key system features including multi-line, shared lines, and busy lamp fields. API for application development is included so there are many 3rd party applications for Trixbox and Asterisk.
ACT Advantage Century Telecomm Phones – SIP
Aksys Networks – Offering the KONNECT Office Phone System — a server-less phone system designed for small businesses with easy to set up and configure multi-site capabilities. Also available are the KONNECT Business Phones that are IP phones that can sit on a SIP-based PBX (ie. Asterisk) and offer some of the tightest integration available with PBX functionality.
Allwin Tech – VoiP /PSTN line with conference, MIDI ring, SIP/H.323 dual protocols, build-in powerful NAT
Anketechnology – Sip phone-$30 USD www.anketechnology.com
Atcom: SIP, H.323, IAX2, AT-530 – INFINEON chipset based, PoE function, router build in, 3 way conference, full-duplex speaker phone-320, dial-up and ethernet
Atlinks – The Alcatel Temporis SIP phones range for business
Avantec – SIP Business, Hotel and DECT IP Phone provider, PoE, switch built-in. Some model(s) have Wifi can be used as a client or AP. OPT66 supported and can use MP3 ringtone. Around US $ 50-60
Avaya 4602 – SIP, H.323 – ~$160 – $179 USD
Azatel – SIP IPCall104 – 4 line, advanced features
Aztech Systems Ltd – IP Phones, SIP compliance, PoE support
BCM – SIP, MGCP, H.323: WiFi IP mobile phone, SIP, 802.11b: WLAN660, WLAN600; HP186
Belco – SIP Phone
Camrivox – Flexor500 IP Phone, 2x 10/100Mb Ethernet includes CTI, SDK available. SIP compatible
Cisco Phones – Approx $150 to $400 USD
Cistrix Phones – H.323, IAX, SIP. Models CT-100, CT-200 and CT-300. Worldwide shipping by Cistrix Ltd.
Clipcomm Phones – SIP and H.323. incl PSTN jack and small NAT/router – Approx. $165 USD
D-Link DPH-140S – Business IP phone (SIP)
DS Desktop IP Phone – Business class deskphone with low price high features
Elastix – Offers softphones for Windows and Mac, a web client as well as smartphone clients for iOS and Android.
EnGenius Technologies – Long range cordless SIP and analog business phone systems.
ESCENE
VoIP SoftPhone – Switch2Voip provides telephone VoIP services for entrepreneurs, business and call centers worldwide on a prepaid basis. Signup for a SIP Account by selecting the amount you wish to deposit on your balance, you can start making calls with just $5.
Fanvil – Chinese based manufacturer of VOIP Phones. IAX2, SIP, POE Support.
Flyingvoice – Leading Manufacturer of IP Phone, VoIP Adapter, VoIP Wireless Router and IP PBX in China, NO.1 VoIP Router market share in South Korea.
Futiro Ltd – Futiro VoIP Handsets. Quality Design, Quality Build, Quality Voice.
Grand Digital Information Ltd. – $30 USD for 100K unitsGIP300,GIP300P,GIP2000B
Grandstream Budgetone – Approx $75 USD (BT-101), $85 USD (BT-102)
Grandstream GXP-2000 – Approx $119 USD

GREAT-IP phone, 5 SIP lines,1FXO,POE,Confrerence,caller ID phones, $38-$50
- GREAT GT-P301 – 5 SIP lines, 2RJ45 Ports (1 WAN,1LAN) , VPN(PPTP,L2TP), POE (optional)
- GREAT GT-P302 – 5 SIP accounts and 1 PSTN account, 2RJ45 Ports,1 FXO Ports(1WAN,1LAN), VPN(PPTP,L2TP), POE (optional)
- GREAT GT-P201 – SIP/ IAX2, 1RJ45 port, Chinese /English/Spain Russin/French /German(optional) POE (optional )
- GREAT GT-P202 – SIP/ IAX2/H323, 2RJ45 port, Chinese/English/Spain/Russin/French/German(optional), POE (optional )
- GREAT GT-P300C – 5 SIP Accounts, 2RJ45 Ports (1 WAN,1LAN) VPN(PPTP,L2TP), POE (optional)

HTek aka Hanlong Technology is a world-class designer and manufacturer of enterprise IP phones, OEM IP phones, and rebranded IP phones. HTek phones are sold in over 50 countries and provide superb sound quality, a rich SIP telephony features, and broad interoperability. All HTek IP phone products feature the Texas Instruments® (TI) chipset for crystal-clear HD sound, and are backed by a two-year warranty.
Httel – Nice IP phone with low price
iaxTalk – IAX2, H.323, MGCP, SIP, POE supported, $89-$99
iKall – LAN phone $99 USD
Inter-fone website has no information on which protocol is used, may be proprietary
Intellitouch – SIP ITC3002 phone, IP2006 SIP phone
Integrated Networks – IN1002 IP-Phone SIP, H.323
InnoMedia – MTA 3308 IP Phone SIP, MGCP
Innovaphone – H.323, SIP (since firmware v6) and ISDN
IPCHITCHAT – UK Provider of IP Phones from £30 at IPChitChat
IPDialog Phones – SIP – Approx $200 USD
IPtel.org TT Phone – SIP – Approx $140 USD
IQ WiFi IP Phone – Business class WiFI phone 802.11bg WMM WPA2 small size
IXC Mobile Voip dialer – Small mobile application installed on cell phones, GSM, g711, g729 iLBC
Juphoon Open Source IP Phone solution – Juphoon provides the business hardware SIP / IP Phone solution with free and open source. ADI, GIPS, Juphoon three-way professional cooperation.
IPlink – Support SIP & IAX2 & H.323 and 1FXS/1PSTN , 1FXS/1FXO , 2FXS , 4FXS ATA. IPlink
Mitel – 5215, 5220, 5224, 5235, 5330 and 5340 SIP phones
Moimstone VoIP Phone – IPv4, IPv6, Multi-line support Broadband VoIP phones
MPLAT – IP Phone T1K support SIP, H323, Plus USB port support skype
Nortel Phones 1535
OB-WAN VoIP – Ethernet phones
Onyx Phones – Based on H.323, Codecs: G.729, G.723
Ortena SIP Phones – Approx $100 – $120
PBX in a Flash – Offers softphones for Windows and Mac, a web client as well as smartphone clients for iOS and Android.
PCPhoneline.com – VST1000; SIP/H.323/MGCP; G.723, G.729, G.711; 100-240v; $89 USD / Approx. 74 Euro
PLANET: – IP Telephony – Deliver Your Voice in Real Time
Plextel: IP-Phone support IAX, MGCP, SIP, H.323
Polycom Phones – SIP approx $120 – $290 USD – SoundPoint IP 601– SoundPoint IP 501– SoundPoint IP 301
POLYPOWER : Support SIP protocol , compact and competitive
QTelNet Phones
Safecom Phones – Well-built, keen-priced SIP phones let down by buggy firmware, frequent lock-ups and poor support from the manufacturer.
Sayson – see entry for Aastra
Siemens Phones – OptiPoint 410 S / optiPoint 420 S – a range of 9 SIP desktop phones
Siptronic Phones – ST-100 – a high quality SIP & H.323 phone for less than 100$ – works with leading VoIP providers.
Sipura SPA-841 SPA-941 – VoIP phones $100-$150 USD
Snom Phones – Linux-based, with GSM codec. Some support IPv6, SRTP, SIPS. $100-$200 USD
Soundwin Network – IP Phone: P100 – SMB Desktop SIP IP Phone: 1WAN, 1LAN, G.711, G.723, G.726, G.729, TTPT client support.
Soyo G668 – Approx $60
Suncomm Phones – OEM from the Welltech Runs on a PowerPC Chip – Approx $120 USD
Speedytel Limited – Speedytel is lowcost IP PBX and IP PHONE factory from china, IP PBX $45 USD / IP PHONE $35 USD
SwissVoice – IP10S H.323, MGCP and SIP – approx. $149 USD / 140 Euro
SysConfig ipDialog SipTone – See IPDialog above
Sysmaster Tornado M5| – SIP based IP Phone – supports G711U,G711A,G726.
SysMaster Tornado M20 IP Video Phone – SIP based IP Video Phone – supports SIP, Video Conferencing, IPTV and more.
Tecom – Intellitouch ITC3002 phone, IP2006 SIP phone
Telebau Phones – H.323 with optional S0 gateway(s) (ISDN BRI)
Telesis VTS480 – IP Video Phone for Telesis IP PBX systems. The applied VoIP protocol is Telesis xSIP (eXtended SIP) protocol
Thomson ST2030 – SIP, MGCP – 128×64 Dot matrix Display – Trendy design – Full Featured – Low price
Tiger Netcom – IPPH Phone series
Tiptel.com – High quality SIP desktop phones made in Germany.
Uniden – UIP 200 SIP phone – $149 MSRP
Vida – PA1688 based phones
Vlines Europe VD160 – IAX2 & SIP based phone.
VOIPac – Net 210 phone
VoiSmart VEP2100 – SIP – New Voismart SIP Phone with PoE, BLF, Autoprovisiong and a lot more.
Zultys phones ‘ZIP 2’ – $100, ‘ZIP 4×4’: $350 (with SRTP/AES encryption)
ZONE Limited – Offers Avaya, Grandstream, Polycom, Snom and Yealink ip phones with PBX integration.
Yealink Pakistan – Yealink HD IP-Phone and video Phone Distributor in Pakistan
Yealink Thailand – Yealink HD IP-Phone and video Phone Distributor in Thailand

Standalone Ethernet Hard Phones (voice only)

An Ethernet hard phone is a self-contained IP telephone that looks just like a conventional phone but instead of a conventional phone jack, it has an Ethernet port through which it communicates directly with a VoIP server, VoIP gateway or another VoIP phone. Since a broadband hard phone communicates directly with a VoIP server, VoIP gateway or another VoIP phone it does not require any personal computer nor any software running on a personal computer to make or receive VoIP phone calls. It can be used independently, all that is required is an internet connection. While PC based software solutions are cheaper, a hard phone is the best solution for IP telephony.

Cordless Hard Phones

ATS X10001P: DECT cordless SIP phone (bundled with Lingo, but can be easily unbundled)
Bcomtel BM7010 DECT IPPhone: DECT VoIP, PSTN and Router three function in one
Belco BCIP-3000: DECT Cordless SIP Phone
Cisco: Cisco Unified Wireless IP Phone 7920
PLANET: DECT Cordless SIP Phone
- DCT-101 – DECT Phone with color LCD Display
- VIP-321 – DECT VoIP Phone
Siemens
- Siemens Gigaset C340 – DECT cordless base station and phone which can be connected to using the M34 USB adapter
- Siemens Phones C450IP a DECT Wireless dual mode: PSTN/IP (SIP), 1 x Ethernet ports, 1 POTS port Codecs G.711 a/u, G.726, G.729A/AB. STUN/NAT support
- Siemens C460 IP: DECT Cordless SIP Phone
- Siemens C675 IP: DECT Cordless SIP Phone
- Siemens Gigaset S440 – similar to C340 but with additional features
- Siemens Gigaset S645 – professional model
Snom Phones Linux-based, with GSM codec.
- Snom M3 no IPv6, no SRTP, no SIPS
- Snom m9 IPv6, SRTP, SIPS support
Skype / Voip Long range phones
Uniden 5.8GHz digital expandable cordless phone with a built-in VoIP adapter
Vtech VTech ip8100 Cordless Broadband Phone

Hard Phones (voice and video)

Hard phones with video telephony support.

Model	Description
ATL Telecom IP400
Call Image Videotel	SIP VideoPhone
Grandstream GXV3240	SIP, Gigabit ethernet switch, Wifi, Bluetooth, 3 way video conferencing, Android based phone
Grandstream GXV3275	SIP, Gigabit ethernet switch, Wifi, Bluetooth, 3 way video conferencing, Android based, touchscreen only phone
InnoMedia	Importek SIP Video Phone
Leadtek
Motion Media
Policycom VVX 500	video with the optional VVX webcam
Policycom VVX 600	video with the optional VVX webcam
Policycom VVX 1500	SIP, Gigabit ethernet switch
Policycom VVX 1500D	SIP and H.323, Gigabit ethernet switch
Viseon VisiFone	Approx $599
Wooksung	SIP and H.323
WorldGate Ojo Videophone

See SIP Video Phones for more details

Table Top Conference Phones

ClearOne MAX IP – For SIP Based VoIP Environments.
Polycom IP4000 SIP – Designed for offices or small to medium sized conference rooms

WLAN or WiFi Phones

A WLAN or WiFi phone is a hard phone with a built-in WiFi transceiver unit instead of an Ethernet port to connect to a WiFi base station and from there to a remote VoIP server. It does not require a personal computer nor any software to be run on a personal computer to make and receive VoIP phone calls. All that is required is access to a WiFi base station.

Model	Description
ACT Advantage Century Telecom Phones	Makes one WiFi phone ACT P202 No outlet found (JUN08)
BCM	SIP WiFi IP mobile phone, SIP, 802.11b: WLAN660, WLAN600
Cisco 7920	SCCP only, but SIP announced for 2004 (It’s now 2005 and still no SIP)
D-Link DPH-540	D-Link DPH-540
Doro IP700	IEEE 802.11b/g SIP2 colour.
EASY3CALL WF400	IEEE802.11b/g with 2.4G Derivation Model
IQ WiFi IP Phone	Business class WiFI phone 802.11bg WMM WPA2 small size, Keenan Systems
Soundwin WP100	WLAN 802.11b/g Wi-Fi Phone, http://www.soundwin.com
Edge-Core WM4201 Wi-Fi Phone	The Edge-Core Wi-Fi Phone with Skype software preloaded
Hitachi WirelessIP5000	WiFi SIP phone.
Importek	SIP WiFi Desktop Phone / Gateway / Handheld Phone
IP-Ware	Variety of WiFi IP-Phones for service providers
Linksys WIP300	Candybar form factor 80211g/b phone. Discontinued 2008.
Moimstone Wi-Fi Phone	802.11b/g support, color LCD, Compact design.
NetVox SIP phone	WiFi, DECT and wired IP phones and adapters
PLANET	SIP Wi-Fi Phone
Pulver Innovations: WiSIP	SIP phone.
SC-6060S WiFi VoIP Phone	Small Handheld, Color Screen, Built-In Micro Browser, IP Surveillance Mode, Super-Long Battery Life, Packed With Even More Features
Soundwin WP100 WiFi VoIP Phone	Small Handheld, Color Screen, Stores 6 SIP Accounts and 6 Access Points, Sophisticated AP Roaming, Loaded With Business-Class Features
SpectraLink NetLink E340	Approx. $400
UniData WPU-7700 Enterprise Edition	Long Battery Life: 70 Hours Standby / 5 Hours TalkTime / Provisioning Config Files
UT Starcom F1000	SIP WiFi phone. Coming to Europe soon. Available in the UK from Sipgate.
UTStarcom F3000	Also available in the UK from Sipgate.
VIP-190	IEEE 802.11b/g SIP Wi-Fi Phone.
VIP-191	IEEE 802.11b/g Smart Wi-Fi Phone.
VIP-192	IEEE 802.11b/g SIP Wi-Fi Phone
Vocera Communication Badge	Voice controlled wearable badge
wireless phones WiFi phone	SIP Handset with improved battery life, Available through soho-voip-phone.com authorised distributor/reseller
WP04 WiFi VoIP Phone	Small Handheld, Color Screen, Super-Long Battery Life, Packed With Features
ZyXEL P2000W Prestige 2000W	802.11b SIP handset (same hardware as Pulver phone)

See also Soft Phones that run on Wifi enabled PDAs and laptops

Combined WiFi/WLAN and GSM Mobile Phones

This section is for WiFi phones that support transferring calls to the GSM network. Phones in this section need to be able to connect directly to a WiFi AccessPoint or GSM network without the use of any other hardware.

Android VOIP – Google’s Android phones have several options for VoIP calls
Apple iPhone VOIP has several options for VoIP calls
IP-Trend IP-Trend DM610 SIP dual-mode phone under EUR 150 – The DM610 can handle both GSM and WiFi calls at the same time. DM610 can also transfer a call seamlessly from VoIP to GSM with no specific server needs.
Motorola CN620 – GSM/WiFi flip phone
Neo FreeRunner Portal Website Currently $399 per unit or $3690 for a pack of 10 phones. Get a discount by purchasing through a group sale. Full mass consumption unit is available now.
Nokia has dual mode VoIP phones both for business users as well as for mass markets. Examples of business class Mobile Phones with WiFi and SIP client – E60, E61, E70. A bit tricky to configure – from 500$ to 600$
Pirelli DP-L10 WLAN-SIP/GSM about 250 EUR
SIPCPE GSM WIFI – GSM/WiFi phone with built-in SIP client
VoIPon – Best Prices and Support on Wireless VoIP Phones and VoIP Phones. Call for reseller pricing or International Shipping. VoIPon.
WPU-7800 Currently $154.99. Offer limited. Buy now till stock lasts.

Web Phones

A web phone is an IP telephone in software that can be integrated easily into a webpage. It can be an activeX, a flash client, a java applet. Web phone is a class of Soft phones. It requires an appropriate security right to be started into a web browser. Web phone are very simple to use as the configuration is performed automatically on web server side !

3CX comes with a fully featured web client. From within the web client users have access to call history, chat, switchboard, presence wallboard, web conferencing and more.
Phone Number Monitoring automatically places scheduled phone calls, measure the time from call connection to call answered, interprets the response and generates an alert call when the response is not as anticipated.
Anveo Communicator is full featured Adobe AIR based web phone and it can installed on a PC or used from a web browser. Features include: HD Voice, FREE Video Calls, FREE Audio Calls, FREE chat, Video and Audio Group Calls, Make Phone Calls, Answer Phone Calls. It also includes business essential features such as: Desktop Sharing, Business Grade XMPP based IM, Voicemail, Integration with Anveo Visual Call Flow, ability to monitor calls of employees and more!
Browser Phone – A java applet based webphone for voip service providers by Mizutech. Includes G.729, wideband codecs, encryption, IM and custom skins
Telesis WebPhone – SIP client applet hosted in Telesis IP PBX systems. The applet can be run from any Java enabled web browser.
JsSIP – “The JavaScript SIP Library”, a pure JavaScript SIP stack using the SIP WebSocket Transport for signaling and WebRTC for audio/video. JsSIP page in voip-info: JsSIP.

Video

http://www.ives.fr/index.php/en/ – SIP-based IMS capable Softphone offering Audio+Video, MCU, multiparty conference, IM, presence High quality audio and video codecs (h264, h263, h263+, G729, …). Interoperability guaranty by IVÃƒÆ’ ¨S infrastructure.
Gmail video chat – Web video phone integrated directly into Gmail
What headsets are compatible with my phone? – complete line of unlocked video phones

Accessories

USB phone sets for use with softphones

USB phone sets are often called USB phones by their manufacturers and vendors, but they are really only remote control and audio units for use with soft phones running on a personal computer. The soft phone is communicating with the remote VoIP server and doing the voice encoding and decoding, while the USB phone set provides a user interface to and headphones/microphone set for the soft phone running on the personal computer. USB phone sets also require driver software which may not be available for all operating systems. Check with the manufacturer before you buy!

ArtDio:SS-168 SS-100 -USB VOIP Speaker support skype,MSN,and more softphone
Atcom: AU-100 AU-200 AU-600 – USB VoIP phone sets. supports skype ,MSN .X-Lite and many more.
Cistrix CT-10 and CT-20 USB-Phones, works with Skype, MSN, X-Lite and many more: Cistrix Ltd. Future Communications
iaxTalk – USB phone with free dialer software.
OB-WAN VoIP – USB phones
Onyx Phones – OCU-100 and OCU-200, USB phones
World Phone: USB Plug & Play, H.323

Skype Adapters and Remotes

Similar to so called USB phones, so called Skype phones and adapters are also remote controls for the Skype phone software running on a personal computer. The Skype phone software is communicating with the Skype network and doing the voice encoding and decoding, while the Skype phone set or adapter provides a user interface to and headphones/microphone set for the Skype phone software running on the personal computer. Skype phones and adapters always require the Skype application to run on your personal computer.

AmperorDirect.com Skype Solutions: Online Retail Store offering Skype Solutions with USB Phones and Adapters
ATCOM.CN: USB phone, USB Gateway, support Skype.
broad-tel.com – NEUTRAL product: Skype adapters, work with Netmeeting and other softphones.
ibscom.co.uk: Internet VoIP phone, VoIP adapters, VoIP headsets for use with Skype solutions and other voip call providers.
VON-Phone.com: US based retailer of USB Skype Phones, Adapters and Gateways for PC and Mac OS X
Also see Skype Gateways

FXS to FXO Port Converters

This section is for reference to the FXS-FXO Converters page only. Do not add entries here.

See: FXS-FXO Converters

Speakers

Advanced Network Devices: PoE VoIP Speakers

Other Accessories

Accessories that do not fit in elsewhere

Dosch&Amand – DECT cordless VoIP card for PC and Laptop for SIP and Audio mode (SKYPE, MSN Messenger…)
PCPhoneline.com – VPT1000 VoIP Portable IP-Phone (SIP/H323/SKYPE). It eliminates the need to use a softphone. Also works with dialup.

Development

Terminal Toolkits

Aricent Edge Gateway Toolkit (EGT) – EGT acts as a key building block for SIP based residential to low port density Customer Premise Equipment (CPE), Edge Gateway (SMBs and Enterprise) terminals and passive optical network (PON) based optical network terminals (ONT).
Aricent Media Terminal Toolkit (MTT) – MTT provides the shortest path to realize wireline and WiFi IP phones, video phones and other IP multimedia terminals like a unified multimedia terminal or a softclient running on a PC/WiFi cellular dual mode phone.

Soft Phone Libraries

These are software libraries that software developers can use to build IP telephones.

Skylar SIP SDK Brotecs Technologies is releasing Next Generation Highly Secured Smart SIP Soft-Phone SDK for iOS and Android.
amsip SDK Windows/Linux,/Macosx/Win CE pocket PC/smartphone – commercial license also available from ANTISIP
Database Systems Corp. Interactive Voice Response – software library including ACD software and IVR software API’s.
eXosip The eXtended oSIP library – GPL – Windows/Linux,/Macosx/Win CE pocket PC/smartphone- support/commercial license also available from ANTISIP
IAXClient IAX protocol library (cross-platform)
Java SIP library Source Forge effort
JPhone Juphoon C99 SIP, XML SDK etc, support voice, video, flexible media engine, support windows XP/CE/Mobile, linux, threadx etc.
NIST SIP Java SIP Library
oSIP The GNU oSIP library – LGPL – Windows/Linux,/Macosx/Win CE pocket PC/smartphone – support/commercial license also available from ANTISIP
PCBest Network SIP ActiveX and SDK PCBest Networks provides SIP SDK and ActiveX for commercial customers and business.
Smeet SDK Windows, Linux, H.323, SIP, MPEG-4, H.264, H.263+, AMR, Speex, iLBC, etc.
VOVIDA SIP VOVIDA SIP stack
Wolfgang Hatzinger ActiveX-control Softphone An ActiveX-Control SIP Softphone based on the Microsoft Real Time Communications (RTC) API
See Also: Protocol Stacks and Development Services

Software Development Kits

These are software interfaces developers can use to integrate their applications with soft phones.

Skylar SIP SDK Brotecs Technologies is releasing Next Generation Highly Secured Smart SIP Soft-Phone SDK for iOS and Android.
damaka: SIP P2P voice and multi-party video w/IPTV, IP Radio, desktop sharing, voice commands, and IMConnectivity to Yahoo, AOL, MSN, Google
PCBest Network SIP SDK The easiest SIP Development Kit, but with flexibility, rich features and OOP designed. You can create your SIP application in just a few of minutes.
Sjmf video plugin for Java, MPEG-4, H.264, H.263+, H.263, 3GPP
Smeet SDK Windows, Linux, H.323, SIP, MPEG-4, H.264, H.263+, AMR, Speex, iLBC, etc.
Zocol SDK Juphoon C99 SIP, HTTP, XML, RTP/RTCP, SDP, UTAL, DNS SDK etc, support voice, video, flexible media engine, support windows XP/CE/Mobile, linux, threadx etc.
Ozeki VoIP SIP SDK for .NET allows creating softphones, autodialer, IVR and further VoIP solutions effectively and quickly.

SIP Call Recorder

PCBest Network VOIP Recorder Recording SIP calls into wav files by sniffing network traffic, the software can also save call info into xml files, which can be used by other applications.