Collaboration with VoIP Providers
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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!
Contents
- 1 Overview
- 2 SIP trunking features
- 3 General Requirements for VoIP
- 4 Hints for all Providers
- 5 How to get a new VoIP provider released
- 6 General Configuration guides
- 7 Tested VoIP Providers by Countries
- 7.1 International
- 7.2 Australia
- 7.3 Austria
- 7.4 Belgium
- 7.5 Brazil
- 7.6 Canada
- 7.7 Chile
- 7.8 Czech Republic
- 7.9 Denmark
- 7.10 Finland
- 7.11 France
- 7.12 Germany
- 7.13 Greece
- 7.14 Hong Kong
- 7.15 Italy
- 7.16 Lichtenstein
- 7.17 Mexico
- 7.18 The Netherlands
- 7.19 New Zealand
- 7.20 Portugal
- 7.21 Serbia
- 7.22 Slovakia
- 7.23 Slovenia
- 7.24 South Africa
- 7.25 Spain
- 7.26 Sweden
- 7.27 Switzerland
- 7.28 United Kingdom
- 7.29 United States of America
- 8 Released SIP Providers in Detail
- 9 Frequently asked Questions
- 10 Information for discontinued platforms
- 11 External Links
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
- Operation behind another router using STUN (can be configured per provider with current software) - integrated SBC functionality
- SIP trunking with single numbers (MSN) and up to 30 SIP user accounts (called Internet telephony stations in WBM)
- 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
- DTMF transmission e.g. for voicemail access
- Simultaneous VoIP connections depending on system and available DSL bandwidth, used Codec and system. G.711 needs up to 92 kbit/s, G.729A needs up to 36 kbit/s in both directions.
- Automatic fallback to ISDN at SIP trunk failure
- Voice Codecs G.711 and G.729
- Fax over IP via T.38
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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 modem or 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
- 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 with T.38 is recommended for analog Fax devices, terminal adapters and the OpenScape Business UC Suite.
- If your provider does not support Fax T.38, Fax pass-through with G.711 is possible but transmission quality depends on network infrastructure in this case.
- Since OpenScape Business V2 UC Suite is able to handle T.38 to G.711 fax fallback as well.
- An incoming ITSP call can be transferred or forwarded to another public subscriber via ITSP. 2 lines (one incoming and one outgoing) are used while the call is active.
- A trunk prefix to select a SIP trunk as an alternate trunk can be used from the OpenScape Business client's dial box but not from client's directories and settings (myPortal, myAttendant, myAgent).
- Because of the above limitation SIP trunks cannot be used for presence based call forwarding if a TDM trunk is present in parallel .
- 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 - last update: 2017-08-31
In the .zip-file you find a process description, the testlist and a template for writing a configuration guide.
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.
General Configuration guides
OSBiz V1 Configuration for ITSP- latest update: 2014-12-17
OSBiz V2 Configuration for ITSP- latest update: 2016-01-15
HowTo-CLIPnoScreeningEng- latest update: 2015-10-26
HowTo-CLIPnoScreeningDeu- latest update: 2015-11-04
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 | AppNote OpenScape_Business_V1 with_Verizon_IP_Trunks ML 10052013 V05
|
| Skype Connect | - |
- Please check provider home page for supported countries.
- Skype Connect is a fee-based business service from Skype. It allows voice communication between Skype clients and office phones using the standard SIP trunking interface. Other Skype client features like chat or video are currently not supported.
Our SME Platforms have been officially certified by Skype. Skype Connect with SME platforms
Australia
| VoIP Providers | Configuration Guide |
|---|---|
| BroadCloud | BroadCloud_ROW_Configuration-Guide
latest update: 2017-07-27 |
| Commander Primus | - |
| Engin | - |
| Internode | - |
| Telstra | - |
Austria
| VoIP Providers | Configuration Guide |
|---|---|
| IP Austria / my Tweak | - |
| Kabelplus Business Phone | - |
| LinzAG City Voice | - |
| Neotel | - |
| SalzburgAG CableLink | - |
| Tele2 | - |
| UPC Austria | - |
Belgium
| VoIP Providers | Configuration Guide |
|---|---|
| Belgacom IMS / Proximus | - |
| BKM | - |
| Destiny | - |
| Orange | OrangeBE
latest update: 2017-10-13 |
| Telenet | - |
| WIN | - |
Brazil
| VoIP Providers | Configuration Guide |
|---|---|
| CTBC | - |
| GVT | - |
| Voitel | - |
Canada
| VoIP Providers | Configuration Guide |
|---|---|
| BabyTEL | - |
Chile
| VoIP Providers | Configuration Guide |
|---|---|
| ENTEL NGN | - |
Czech Republic
| VoIP Providers | Configuration Guide |
|---|---|
| GTS | - |
| O2 | - |
| T-mobile | - |
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 | - |
Finland
| VoIP Providers | Configuration Guide |
|---|---|
| Elisa | - |
| Länsilinkki | - |
| TDC | - |
| Telia-Sonera | - |
France
| VoIP Providers | Configuration Guide |
|---|---|
| Acropolis Telecom | - |
| Bouygues | - |
| BroadCloud | BroadCloud_ROW_Configuration-Guide
latest update: 2017-07-27 |
| Completel | - |
| Hexatel | - |
| MyStream | - |
| OpenIP | - |
| Paritel Operateur | - |
| Sewan Communications | - |
Germany
Greece
| VoIP Providers | Configuration Guide |
|---|---|
| CosMote | COSMOTE Greece
latest update: 2016-10-02 |
Hong Kong
| VoIP Providers | Configuration Guide |
|---|---|
| Hong Kong Broadband Network | HKBN-configuration
latest update: 2017-07-27 |
Italy
| VoIP Providers | Configuration Guide |
|---|---|
| BroadCloud | BroadCloud_ROW_Configuration-Guide
latest update: 2017-07-27 |
| Infracom (ex Multilink) | - |
| TWT | - |
| Viatek | - |
Lichtenstein
| VoIP Providers | Configuration Guide |
|---|---|
| / FL1 Telekom | FL1 Liechtenstein
latest update: 2016-04-14 |
Mexico
| VoIP Providers | Configuration Guide |
|---|---|
| Telefonica | - |
The Netherlands
| VoIP Providers | Configuration Guide |
|---|---|
| BCOM | BCOM Netherlands
latest update: 2016-03-21 |
| BLU | BLU telecom configuration
latest update: 2016-05-02 |
| Deanconnect B.V. | - |
| gnTel NL | Konfiguration_gnTel_en
latest update: 2017-08-08 |
| Infopact | - |
| KPN VoiPConnect | KPN Netherlands
latest update: 2017-07-27 |
| Motto Communications | - |
| OneCentral | - |
| OneXS | - |
| RoutIT | - |
| SIGNET B.V. | SIGNET telecom Netherlands
latest update: 2016-09-30 |
| Speakup | - |
| Tele2 | - |
| T-Mobile NL | - |
| Vodafone NL | - |
| Voiceworks | - |
| Voiceworks MEX NDL | Configuration_VoiceworksMEX
latest update: 2017-07-27 |
| X2COM | X2COM Netherlands
latest update: 2016-06-03 |
| Ziggo | - |
New Zealand
| VoIP Providers | Configuration Guide |
|---|---|
| ORCON | - |
| TelstraClear | - |
Portugal
| VoIP Providers | Configuration Guide |
|---|---|
| Portugal Telecom | - |
Serbia
| VoIP Providers | Configuration Guide |
|---|---|
| Orion Telekom | - |
| Telenor | - |
Slovakia
| VoIP Providers | Configuration Guide |
|---|---|
| Slovak Telekom | - |
Slovenia
| VoIP Providers | Configuration Guide |
|---|---|
| Amis | - |
| Detel | - |
| MegaM | - |
| T-2 | - |
| tustelekom | - |
| Telemach | - |
South Africa
| VoIP Providers | Configuration Guide |
|---|---|
| Nashua NCN | - |
| Vodacom | - |
Spain
| VoIP Providers | Configuration Guide |
|---|---|
| LCR (Least Cost Routing) | - |
| Telecable | - |
| vozelia | - |
| VozTelecom |  VozTelecom_Spain
latest update: 2016-08-07 |
Sweden
| VoIP Providers | Configuration Guide |
|---|---|
| Tele2 | - |
| Telia | - |
Switzerland
| VoIP Providers | Configuration Guide |
|---|---|
| efon | - |
| Peoplefone AG | - |
| sipcall | - |
| Sunrise | Sunrise_SIP-Trunk_Swiss
latest update: 2017-01-11 |
| Swisscom BCON | - |
| Swisscom Smart Business Communication | - |
| Swisscom VoIP Gate | - |
| Swisscom Enterprise SIP | - |
| Telco Pack SA | - |
| UPC | - |
| vtx | - |
United Kingdom
| VoIP Providers | Configuration Guide |
|---|---|
| BroadCloud | BroadCloud_ROW_Configuration-Guide
latest update: 2017-07-27 |
| BT IPVS | - |
| Gamma | - |
| HIPCOM | - |
| KCOM | KCOM UK ITSP SIP Trunk Configuration
latest update: 2016-06-03 |
| Opal | - |
| TalkTalk | - |
| tIPicall | - |
| Vodafone UK | Vodafone_UK_ITSP_SIP_Trunk_Configuration
latest update: 2017-07-27 |
| Voiceflex | - |
| VoIP Ltd i-Line | - |
United States of America
| VoIP Providers | Configuration Guide |
|---|---|
| AT&T | OSO_ATT SipTrk Configuration Note 07092013 V1
|
| BroadCloud | BroadCloud_USA_Configuration-Guide
latest update: 2017-07-27 |
| Cbeyond | - |
| CenturyLink | - |
| Fusion 360 | ConfigurationNoteforFusionConnectSIPTrunks
latest update: 2017-07-27 |
| Intermedia | - |
| 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 Latest update: 2017-10-13
The following scenarios are covered within the connectivity test:
- Registration
- Basic Calls from / to ITSP
- Feature Tests
- 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).
Frequently asked Questions
- VoIP Provider FAQ - answers to frequently asked questions
Information for discontinued platforms
For discontinued platforms see Collaboration with VoIP Providers (discontinued platforms).
External Links
- Partner Portal (login required, Internet Explorer only)
