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More than 200 VoIP Providers released for Unify SME Platforms > table

The connection of communication systems to the public network via SIP Trunking can be used instead of or in addition to traditional PSTN trunks. Many VoIP Providers, also known as ITSPs, are offering corresponding services. The following article gives an overview of the SIP trunking features and limitations and lists the Providers, which have been tested and released with the SME platform OpenScape Business.

You did not find your provider? Find out how to get it released!

Overview

OpenScape Business has been tested with a large number of Internet telephony providers that support SIP. Continuously new providers are tested, released and included within administration. As the SIP recommendations leave some room for interpretation, there are differences in the range of features supported with a specific provider. In this chapter general information is given which is valid for all SIP Providers.

SIP trunking features

• Up to 8 active SIP providers and one Internet connection
• integrated SBC functionality
• SIP trunking with single numbers (MSN) and up to 30 SIP user accounts (called Internet telephony stations in WBM)
• SIP trunking with Direct Inward Dialing (DID)
• Comprehensive feature set available e.g.
  • CLIP
  • Hold, Consultation, Toggle
  • Transfer (attended, semi-attended)
  • Ringing group, Call pickup
  • Conference
  • Call Forwarding
  • Call deflection
  • DTMF transmission e.g. for voicemail access
  • Location information for emergency calls
• Simultaneous VoIP connections depending on available DSL bandwidth, used Codec and system.
• Automatic fallback at SIP trunk failure
• Voice Codecs G.711 and G.729
• Fax over IP via T.38

General Requirements for VoIP

• LAN with 10/100/1000 MBit/s and no more than 40% network load
• Separate port on the switch or router for every component in the IP network (no hubs as concentrators)
• Not more than 50 ms delay in one direction (One Way Delay); not more than 150 ms total delay
• Not more than 3% packet loss and 20 ms jitter
• Quality of Service (QoS) support - IEEE 802.p, DiffServ (RFC 2474) or ToS (RFC 791)
• Sufficient WAN bandwidth (uplink and downlink) for intended simultaneous calls and CODEC
• External router
• Intermediate routers shall support quality of service and bandwidth control mechanisms if the WAN link is used for voice and data simultaneously. SIP messages have to be routed transparently.

For interworking with different network configurations and edge devices and how to use STUN please see Network Configuration for VoIP Providers.

Hints for all Providers

• Concurrent calls via ITSP (depending on the available bandwidth and used Codec).
  • 30 for OpenScape Business X1
  • up to 120 for OpenScape Business X3 / X5 / X8
  • 180 for OpenScape Business S
• DTMF transmission
  • outband transport via RFC 2833/RFC4733 is highly recommended. The ITSP MUST support outband DTMF (RFC2833/RFC4733) if UC Suite functions via SIP trunk (e.g. auto attendant, voicemail control) shall be used.
  • inband transport may be used, but the functionality cannot be guaranteed as endpoints (e.g. UC-Suite) may not support inband DTMF.
• FAX over IP
  • Please check the documentation available for your ITSP which Fax transmission is preferred.
  • T.38 is activated by default in OpenScape Business
  • If your provider does not support Fax T.38 or T.38 transmission causes problems, Fax pass-through with G.711 is possible but transmission quality depends on network infrastructure in this case.
• Call Forwarding
  • By default an incoming ITSP call is forwarded to another public subscriber via a second ITSP trunk (one incoming and one outgoing).
  • Call rerouting can be used for selected ITSPs, in this case NO line is used when call is active
• Special call numbers and emergency calls may need alternate TDM connections
  • Special call numbers (e.g. 0800, 0900, 0137) are not supported by all SIP providers
  • analog fax/modem connections are not supported by all SIP providers.
  • Emergency call numbers (e.g. 110, 112) are not supported by all providers.

How to get a new VoIP provider released

Tests are necessary with every new provider before making installations in the field due to different implementations of the SIP protocol. Otherwise no support is available for an ITSP. Test resources have to be provided by the region or partner.

• Select the VOIP / SIP trunking providers, which are most important for your business, estimate business relevance and get agreement for start of certification from product management.
• Download   VOIP provider data collection and test list
  
• In the .zip-file you find the
  • process description updated with new parameters V3R3
  • ITSP questionnaire
  • HowTo guide for system setup and hints for test execution
  • the testlist updated with new test description for V3R3.1
  • templates for writing a configuration guide updated for V3R3.1

After successful tests the VoIP provider will be released and published on this page. Regular back level support is available for issues with the new provider after that. A preconfigured VoIP provider profile will be included in the OpenScape Business administration for easy setup. Certified providers are entitled to label their SIP Trunking Service with the OpenScape Business certified ITSP emblem

General Configuration guides

  OpenScape Business SIP Trunk Configuration

  Clip no Screening (CNS) for DID SIP Trunks

  Mobile Extension (MEX) Connectivity

  Multisite Management for DID SIP Trunks

Tested VoIP Providers by Countries

The main SIP trunking functions of the SME platforms have been tested with the following Internet telephony providers. For detailed information see the document Overview about Released SIP Providers below.

International

VoIP Providers	Configuration Guide
COLT	-
Verizon	Verizon IP-Trunk Configuration
Skype Connect	-

• Please check provider home page for supported countries.
  

Australia

VoIP Providers	Configuration Guide
AAPT - TPG Telecom Limited	AAPT SIP Connect Configuration
BroadCloud	BroadCloud Configuration
Commander Primus	-
Engin	-
Internode	-

Austria

VoIP Providers	Configuration Guide
A1 Telekom Austria	A1 Telekom Austria SIP Trunk registrierend Konfiguration
Drei Business	Drei Business SIP Connect Konfiguration new: 2023-10-06
IP Austria / my Tweak	-
Kabelplus Business Phone	-
LinzAG City Voice	-
Magenta Business	Magenta Business Voice SIP Konfiguration new: 2023-10-06
Net4You	Net4You Voice4Biz Konfiguration profile included: 2024-07-05
Neotel	-
SalzburgAG CableLink	-

Belgium

VoIP Providers	Configuration Guide
Belgacom IMS / Proximus	-
BCOM	BCOM Belgium Configuration
BKM	BKM Configuration
Destiny	-
IPnexia	-
Orange BE S&F	Orange BE S&F Configuration
Orange BE SIP	Orange BE SIP Configuration
Telenet	-
WIN	-
X2COM	X2COM Belgium Configuration

Brazil

VoIP Providers	Configuration Guide
Voitel	-
Telefonica vivo	Telefonica vivo SIP Trunk Configuration

Canada

Chile

Czech Republic

Denmark

VoIP Providers	Configuration Guide
Global Connect	-
TDC	TDC Denmark Configuration
Telia	Telia Denmark Configuration
Uni-tel A/S	-

Estonia

VoIP Providers	Configuration Guide
Telia Estonia	Telia Estonia Configuration

Finland

France

VoIP Providers	Configuration Guide
Bouygues	-
BroadCloud	BroadCloud Configuration
Codepi	Codepi SIP-Trunk Configuration
Completel	-
Dstny	Dstny France Configuration new: 2023-10-06
Foliateam	Foliateam SIP Trunk Configuration
Hexatel	-
IP directions	IP directions SIP Trunk Configuration
Jaguar Network	Jaguar Network SIP Trunk Configuration
Keyyo	Keyyo Configuration
MyStream	-
OpenIP	-
Orange Business Services SIP trunking	Orange Business Services SIP trunking Configuration
Paritel Operateur	-
Sewan Communications	-

Germany

VoIP Providers	Configuration Guide
1&1	-
1&1 Versatel	1&1 Versatel Konfiguration
autphone	autphone SIP Trunk Konfiguration
BiTel	BITel Business Voice Konfiguration
BiTel	BITel Business SIP Flex Konfiguration new: 2023-12-11
BroadCloud	BroadCloud Configuration
Datel	-
Deutsche Telefon	Deutsche Telefon Konfiguration
easybell	easybell Konfiguration
EasyFone	EasyFone Konfiguration
ecotel sipTrunk 2.0	Ecotel SipTrunk2.0 Konfiguration
envia TEL	envia TEL enVoice IP range Konfiguration
Equada	-
ewe / swb / osnatel	ewe Konfiguration update: 2024-07-05
Gamma	Gamma NGN (DE) Konfiguration update: 2024-03-11
GMX (now 1&1)	-
gnTel	gnTel Konfiguration
Helinet	Helinet Konfiguration new: 2023-10-06
HL-Komm	HL-Komm Konfiguration
htp	htp GmbH SIP-Trunk Konfiguration
htp Business	htp Business FleX SIP-Trunk smart Konfiguration new: 2023-10-06
inexio	Inexio Konfiguration
komro	komroVoIP-Trunk Konfiguration new: 2023-10-06
M-Net	M-net-Premium Konfiguration update: 2024-07-05
MK Netzdienste	MK-Netzdienste Konfiguration
NetCologne	NetCologne ProPhone SIP Trunk Konfiguration
NetCom BW	NetCom BW Konfiguration
NFON	NFON Konfiguration
omnidat	omnidat Konfiguration
PhoneVoice	PhoneVoice Konfiguration
Peoplefone AG	-
O2 All-IP Voice SIP	O2 All-IP Konfiguration
Purtel	purtel Konfiguration
Plusnet IPfonie Extended	-
Plusnet IPfonie Extended Connect	Plusnet-IPfonie Extended Connect Konfiguration
reventix	reventix Konfiguration
rgi	rgi VoIP Trunk 200 Konfiguration
R-Kom	R-Kom Konfiguration
sipgate basic (MSN)	-
sipgate trunking (DID)	-
Steffel-Voice SIP Trunk	Steffel-Voice SIP Trunk Konfiguration
Tele AG	-
TeleData	TeleData Konfiguration
Deutsche Telekom CompanyFlex	Deutsche Telekom CompanyFlex SIP-Trunk Konfiguration
Deutsche Telekom IP-As mit MSN	Deutsche Telekom Company Pro Konfiguration
Deutsche Telekom Deutschland LAN SIP-Trunk	Deutsche Telekom Deutschland LAN SIP-Trunk Konfiguration
TelemaxX	TelemaxX SIP-Trunk Konfiguration
T-Systems Corporate SIP Trunk	individual profile for the specific customer requirements please contact: product management
teliko
TNG Stadtnetz	TNG Stasdtnetz Sip Trunk Konfiguration
toplink	-
Unitymedia	Unitymedia Konfiguration
Universe SIP connect	Universe SIP-Connect Konfiguration profile updated: 2024-07-05
Vodafone Anlagenanschluss R4	Vodafone IP-ALA-R4 Konfiguration
Vodafone Anlagenanschluss R5	Vodafone IP-ALA-R5 Konfiguration new: 2023-10-06
Voiceworks DE	Voiceworks DE Konfiguration
VoIPXS	VoIPXS Konfiguration
wilhelm.tel	wilhelm.tel Konfiguration
wittenberg-net GmbH	wittenberg-net GmbH Konfiguration new: 2023-12-11
WOBCOM Anlagenanschluss	WOBCOM Konfiguration

Greece

VoIP Providers	Configuration Guide
CosMote	COSMOTE Configuration

Hong Kong

VoIP Providers	Configuration Guide
Hong Kong Broadband Network	HKBN Configuration
HGC	HGC configuration

Hungary

VoIP Providers	Configuration Guide
Netfone	Netfone configuration

Italy

VoIP Providers	Configuration Guide
BroadCloud	BroadCloud Configuration
Infracom (ex Multilink)	-
TWT	-
Viatek	-

Liechtenstein

VoIP Providers	Configuration Guide
FL1 Telekom	FL1 Konfiguration

Luxembourg

Mexico

Netherlands

VoIP Providers	Configuration Guide
BCOM	BCOM Configuration
BLU	BLU telecom Configuration
Deanconnect B.V.	-
gnTel	gnTel Configuration
Infopact	-
KPN VoiPConnect	KPN Configuration
KPN EEN over TLS	KPN TLS NL Configuration
Motto Communications	-
OneCentral	-
Pocos	Pocos NL Configuration
RoutIT	-
RoutIT TLS	RoutIT TLS NL Configuration new: 2023-10-06
SCALDIS ict & telecom	Scaldis B.V. Configuration
SIGNET B.V.	SIGNET Configuration
Speakup	-
Tele2	-
OneXS	-
T-Mobile NL	-
Vodafone NL	-
Voiceworks NL	renamed
Voiceworks MEX NDL	Voiceworks MEX Configuration
VoIPXS	VoIPXS Configuration
VoipQ	VoipQ SIP-Trunk Configuration
Vodafone Ziggo	Vodafone Ziggo Configuration
X2COM	X2COM Configuration

New Zealand

VoIP Providers	Configuration Guide
Spark Voice Connect	Spark Voice Connect Configuration
voyager	Voyager SIP Trunk Configuration

Portugal

VoIP Providers	Configuration Guide
Altice (Portugal Telecom)	Altice configuration
G9 Telecom	G9 Telecom configuration
Portugal Telecom	-
Vodafone Portugal	Vodafone Portugal configuration

Serbia

Slovakia

Slovenia

South Africa

Spain

VoIP Providers	Configuration Guide
LCR (Least Cost Routing)	-
Telecable	-
vozelia	-
VozTelecom	VozTelecom configuración

Sweden

Switzerland

VoIP Providers	Configuration Guide
efon	-
Nexphone	Nexphone Konfiguration
ImproWare	-
Peoplefone AG	-
sipcall	-
Sunrise	Sunrise Konfiguration
Swisscom Smart Business Connect	Swisscom Smart Business Communication Konfiguration update: 2024-07-05
Swisscom Enterprise SIP	-
Telco Pack SA	-
UPC CH Internet registrierend	Konfiguration UPC Internet registrierend
UPC CH Internet static IP	Konfiguration UPC Internet static IP
vtx	-

United Kingdom

VoIP Providers	Configuration Guide
BroadCloud	BroadCloud Configuration
BT IPVS	-
BT Wholesale Hosted Communications	BT Wholesale Hosted Communications Configuration
BT Wholesale SIP Trunking	BT Wholesale SIP Trunking Configuration
Gamma	Gamma SIP Trunk Configuration
HIPCOM	-
KCOM	KCOM Configuration
Opal	-
TalkTalk	-
tIPicall	-
Vodafone UK	Vodafone UK Configuration
Voiceflex	-
VoIP Ltd i-Line	-

United States of America

VoIP Providers	Configuration Guide
AT&T	-
BroadCloud	BroadCloud US Configuration
Cbeyond	-
CenturyLink	-
Fusion 360	FusionConnect Configuration
Intermedia	-
IPfone	IPfone SIP Trunk Configuration
Sotel	-
Windstream   (Broadsoft platform only)	-
XO	-

Released SIP Providers in Detail

The table above shows the ITSPs that passed successfully a connectivity test. More details about test results, supported features and restrictions for a specific ITSP are listed in following PDF document.

  Overview about Released SIP Providers OpenScape Business V3R3.2

The following scenarios are covered within the connectivity test:

• Registration
• Basic Calls from / to ITSP
• Feature Tests
  • Consultation, transfer, toggle, conference
  • Call Pickup / ringing group scenarios
  • call forwarding scenarios
  • DTMF
  • CLIP / CLIR
  • COLP / COLR
  • FAX
• Special Tests
  • emergency calls
  • service calls
  • long duration calls
• Calls handled via UC application

The connectivity tests are performed using various endpoints (for details see test list).

External Links

• Partner Portal (login required, Internet Explorer only)