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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
  • 60 for OpenScape Business X3 / X5 / X8 (up to 120 with new X8 OCCLA Mainboard)
  • 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).
  • since V2R4 Call rerouting (available for selected ITSPs) can be used, 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 V3R1 FR2
  • ITSP questionnaire
  • HowTo guide for system setup and hints for test execution
  • the testlist updated with new test description
  • templates for writing a configuration guide updated for V3

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

  OSBiz V2/V3 Configuration for ITSP - latest update: 2021-03-01

  HowTo: Clip no Screening (English) - latest update: 2015-10-26

  HowTo: Clip no Screening (Deutsch) - latest update: 2015-11-04

  HowTo: Mehrfachregistrierung für Durchwahlanschlüsse - latest update: 2018-03-28

  Configuration of SIP-MEX - latest update: 2018-02-28

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 latest update: 2013-05-10
Skype Connect	-

• Please check provider home page for supported countries.
  

Australia

VoIP Providers	Configuration Guide
AAPT - TPG Telecom Limited	AAPT SIP Connect Configuration new: 2022-06-01
BroadCloud	BroadCloud Configuration latest update: 2017-07-27
Commander Primus	-
Engin	-
Internode	-
Telstra	-

Austria

VoIP Providers	Configuration Guide
A1 Telekom Austria	A1 Telekom Austria SIP Trunk registrierend Konfiguration latest update: 2019-07-31
IP Austria / my Tweak	-
Kabelplus Business Phone	-
LinzAG City Voice	-
Neotel	-
SalzburgAG CableLink	-
Tele2	-
UPC Austria	-

Belgium

VoIP Providers	Configuration Guide
Belgacom IMS / Proximus	-
BCOM	BCOM Belgium Configuration latest update: 2020-06-02
BKM	BKM Configuration latest update: 2020-06-02
Destiny	-
IPnexia	-
Orange	Orange Belgium Configuration latest update: 2017-11-17
Telenet	-
WIN	-
X2COM	X2COM Belgium Configuration latest update: 2020-06-02

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 latest update: 2017-02-10
Telia	TeliaDenmark latest update: 2017-04-28
Uni-tel A/S	-

Estonia

VoIP Providers	Configuration Guide
Telia Estonia	Configuration Telia Estonia latest update: 2019-03-15

Finland

France

VoIP Providers	Configuration Guide
Bouygues	-
BroadCloud	BroadCloud Configuration latest update: 2017-07-27
Codepi	Codepi SIP-Trunk Configuration latest update: 2020-10-19
Completel	-
Foliateam	Foliateam SIP Trunk Configuration
Hexatel	-
IP directions	IP directions SIP Trunk Configuration latest update: 2019-07-31
Jaguar Network	Jaguar Network SIP Trunk Configuration
Keyyo	Keyyo Configuration new: 2022-06-01
MyStream	-
OpenIP	-
Orange Business Services SIP trunking	Orange Business Services SIP trunking Configuration latest update: 2018-02-28
Paritel Operateur	-
Sewan Communications	-

Germany

VoIP Providers	Configuration Guide
1&1	-
1&1 Versatel	1&1 Versatel Konfiguration latest update: 2018-08-17
autphone	autphone SIP Trunk Konfiguration latest update: 2019-07-31
BiTel	BITel Business Voice Konfiguration latest update: 2019-03-15
BroadCloud	BroadCloud Configuration latest update: 2017-07-27
Citec Universe SIP connect	Universe SIP-Connect Konfiguration latest update: 2020-06-02
Datel	-
Deutsche Telefon	Deutsche Telefon Konfiguration latest update: 2017-07-27
easybell	easybell Konfiguration latest update: 2021-11-05
EasyFone	EasyFone Konfiguration new: 2022-06-01
ecotel sipTrunk DDI	-
ecotel sipTrunk Connect 1.0	-
ecotel sipTrunk 2.0	Ecotel SipTrunk2.0 Konfiguration latest update: 2021-11-05
envia TEL	envia TEL enVoice IP range Konfiguration new: 2022-06-08
Equada	-
ewe / swb / osnatel	ewe Konfiguration latest update: 2018-11-30
GMX (now 1&1)	-
gnTel	gnTel Konfiguration latest update: 2018-05-18
HFO	-
HL-Komm	HL-Komm Konfiguration latest update: 2019-03-15
hpt	htp GmbH SIP-Trunk Konfiguration latest update: 2019-03-15
inexio	Inexio Konfiguration latest update: 2018-08-02
M-Net	M-net-Premium Konfiguration latest update: 2018-05-18
MK Netzdienste	MK-Netzdienste Konfiguration latest update: 2019-03-15
NetCologne	NetCologne ProPhone SIP Trunk Konfiguration latest update: 2019-10-11
NetCom BW	NetCom BW Konfiguration latest update: 2018-11-30
NFON	NFON Konfiguration latest update: 2017-10-13
omnidat	omnidat Konfiguration latest update: 2020-06-02
PhoneVoice	PhoneVoice Konfiguration latest update: 2018-05-18
Peoplefone AG	-
O2 All-IP Voice SIP	O2 All-IP Konfiguration latest update: 2017-08-14
Purtel	purtel Konfiguration latest update: 2019-03-15
QSC IPfonie extended (DID)	deprecated profile, use Plusnet Profile for new installations
Plusnet IPfonie Extended	-
QSC IPfonie Extended Connect (DID)	QSC IPfonie Extended Connect Konfiguration deprecated profile, use Plusnet Profile for new installations
Plusnet IPfonie Extended Connect	Plusnet-IPfonie Extended Connect Konfiguration latest update: 2021-05-12 - new IP-Subnet for SBC starting with 13.03.2021 - please check customer firewall https://extranet.plusnet.de/go/ipfonie.extendedconnect.installationshinweise
reventix	reventix Konfiguration latest update: 2019-03-15
rgi	rgi VoIP Trunk 200 Konfiguration latest update: 2022-05-09
R-Kom / Glasfaser Ostbayern	R-Kom Konfiguration latest update: 2020-06-02
sipgate basic (MSN)	-
sipgate trunking (DID)	-
Steffel-Voice SIP Trunk	Steffel-Voice SIP Trunk Konfiguration latest update: 2019-07-31
Tele AG	latest update: 2020-06-02
TeleData	TeleData Konfiguration latest update: 2018-08-02
Deutsche Telekom CompanyFlex	Deutsche Telekom CompanyFlex SIP-Trunk Konfiguration latest update: 2021-11-05
Deutsche Telekom IP-As mit MSN	Deutsche Telekom Company Pro Konfiguration latest update: 2022-06-20
Deutsche Telekom DeutschlandLAN SIP-Trunk	Deutsche Telekom SIP-Trunk Konfiguration latest update: 2021-04-14
TelemaxX	TelemaxX SIP-Trunk Konfiguration latest update: 2020-10-19
T-Systems Corporate SIP Trunk	individual profile for the specific customer requirements please contact: product management
teliko
TNG Stadtnetz	TNG Stasdtnetz Sip Trunk Konfiguration latest update: 2019-07-31
toplink	-
Vodafone Anlagenanschluss (formerly Arcor)	-
Unitymedia	Unitymedia Konfiguration latest update: 2020-06-02
Vodafone Anlagenanschluss R3 (DID)	Vodafone IP-ALA-R3 Konfiguration latest update: 2019-07-09
Vodafone Anlagenanschluss R4 (DID)	Vodafone IP-ALA-R4 Konfiguration latest update: 2022-05-09
Voiceworks DE	Voiceworks DE Konfiguration latest update: 2021-03-01
VoIPXS	VoIPXS Konfiguration latest update: 2018-05-18
wilhelm.tel	wilhelm.tel Konfiguration latest update: 2020-06-02
WOBCOM Anlagenanschluss	WOBCOM Konfiguration latest update: 2020-06-02

Greece

VoIP Providers	Configuration Guide
CosMote	COSMOTE Configuration latest update: 2016-10-02

Hong Kong

VoIP Providers	Configuration Guide
Hong Kong Broadband Network	HKBN Configuration latest update: 2017-07-27
HGC	HGC configuration latest update: 2018-05-18

Hungary

VoIP Providers	Configuration Guide
Netfone	Netfone configuration latest update: 2018-08-02

Italy

VoIP Providers	Configuration Guide
BroadCloud	BroadCloud Configuration latest update: 2017-07-27
Infracom (ex Multilink)	-
TWT	-
Viatek	-

Lichtenstein

VoIP Providers	Configuration Guide
FL1 Telekom	FL1 Konfiguration latest update: 2020-06-29

Luxembourg

Mexico

The Netherlands

VoIP Providers	Configuration Guide
BCOM	BCOM Configuration latest update: 2018-08-02
BLU	BLU telecom Configuration latest update: 2019-07-31
Deanconnect B.V.	-
gnTel	gnTel Configuration latest update: 2018-05-18
Infopact	-
KPN VoiPConnect	KPN Configuration latest update: 2017-07-27
KPN EEN over TLS	KPN TLS NL Configuration new: 2021-12-16
Motto Communications	-
OneCentral	-
OneXS	-
Pocos	Pocos NL Configuration new: 2021-12-16
RoutIT	-
SCALDIS ict & telecom	Scaldis B.V. Configuration new: 2021-12-16
SIGNET B.V.	SIGNET Configuration latest update: 2016-09-30
Speakup	-
Tele2	-
T-Mobile NL	-
Vodafone NL	-
Voiceworks NL	renamed
Voiceworks MEX NDL	Voiceworks MEX Configuration latest update: 2017-07-27
VoIPXS	VoIPXS Configuration latest update: 2018-05-18
VoipQ	VoipQ SIP-Trunk Configuration latest update: 2020-10-19
X2COM	X2COM Configuration latest update: 2018-08-02
Vodafone Ziggo	Vodafone Ziggo Configuration latest update: 2018-08-02

New Zealand

VoIP Providers	Configuration Guide
ORCON	-
TelstraClear	-
voyager	Voyager SIP Trunk Configuration latest update: 2019-07-31

Portugal

VoIP Providers	Configuration Guide
Altice (Portugal Telecom)	Altice_Portugal_configuration latest update: 2018-11-30
Portugal Telecom	-
Vodafone Portugal	Configuration-Vodafone_Portugal latest update: 2018-05-18

Serbia

Slovakia

Slovenia

South Africa

Spain

VoIP Providers	Configuration Guide
LCR (Least Cost Routing)	-
Telecable	-
vozelia	-
VozTelecom	VozTelecom configuración latest update: 2016-08-07

Sweden

Switzerland

VoIP Providers	Configuration Guide
efon	-
Nexphone	Nexphone Konfiguration latest update: 2020-06-02
ImproWare	-
Peoplefone AG	-
sipcall	-
Sunrise	Sunrise Konfiguration latest update: 2020-10-19
Swisscom BCON	-
Swisscom Smart Business Communication	-
Swisscom VoIP Gate	-
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 latest update: 2017-07-27
BT IPVS	-
BT Wholesale Hosted Communications	BT Wholesale Hosted Communications Configuration latest update: 2018-02-28
BT Wholesale SIP Trunking	BT Wholesale SIP Trunking Configuration latest update: 2018-02-28
Gamma	Gamma SIP Trunk Configuration latest update: 2018-04-20
HIPCOM	-
KCOM	KCOM Configuration latest update: 2016-06-03
Opal	-
TalkTalk	-
tIPicall	-
Vodafone UK	Vodafone UK Configuration latest update: 2017-11-08
Voiceflex	-
VoIP Ltd i-Line	-

United States of America

VoIP Providers	Configuration Guide
AT&T	AT&T Configuration latest update 2013-09-07
BroadCloud	BroadCloud US Configuration latest update: 2017-07-27
Cbeyond	-
CenturyLink	-
Fusion 360	FusionConnect Configuration latest update: 2017-07-27
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 V3R2 latest update: 2022-06-08

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)