What is SIP Trunking?
TalkAssure SIP trunking is a fast and easy way to increase the number of concurrent calls you can make through one internet connection. SIP trunks remove the physical aspect of a phone line – their virtual phone lines are cloud-based and infinitely scalable.
SIP trunking provides you with added flexibility, improves business continuity and offers substantial cost-savings over traditional telephony services. By utilising SIP Trunks within a converged voice and data network, you can dynamically allocate bandwidth from voice calls to other needs such as web traffic – when you need it.
Business benefits of SIP trunking
Big Savings
Small upfront investment and call rates much lower than with conventional providers.
Flexibility
Add or remove lines as required, without the need for additional hardware.
Unified Voice & Data
Converged, high-quality voice and internet services from one provider.
Business Continuity
Automatic call re-routing that keeps you connected if things go wrong.
SIP trunk plans built for your business
talkassure
UK Unlimited
Number of channels
1Each SIP channel comes with an unlimited UK minutes bundle. Additional channels will also include unlimited minutes per channel. Other SIP channel products cannot be added to a trunk with an unlimited plan.
Included Minutes
YesUnlimited UK calls to 01/02/03 numbers and EE, O2, Three, Vodafone mobile networks (Subject to 5000 minute FUP) per channel.
Available Numbering
UK & InternationalAdd numbers to your SIP trunk to receive calls. Visit our Phone Numbers page for more information. International numbers will be presented as callerid.
Number Porting
YesPort your existing UK & International numbers to our network
Fraud Detection And Prevention
YesCalls going out through your trunk are monitored for possible fraud. If suspicious activity is detected then preventative measures are taken on your behalf
Call Barring
Inbound/OutboundBlock inbound/outbound calls from/to certain destinations
Use With Microsoft Teams
YesWith our Voice for Teams product you can make and receive calls on your Teams client
3rd Party Phone System Compatibility
Yes, SIP-basedCan be used with most phone systems supporting the SIP protocol
Bandwidth Required
100kbps per callWith compression this can be reduced to 30kbps
5 Channels
Number of channels
5The number of calls you can make / receive simultaneously
Included Minutes
NoFor trunks with included minutes please visit our call plans page
Available Numbering
UK & International Add numbers to your SIP trunk to receive calls. Visit our Phone Numbers page for more information. International numbers require International SIP trunking. Please enquire for further pricing information.
Number Porting
YesPort your existing UK & International numbers to our network
Fraud Detection And Prevention
YesCalls going out through your trunk are monitored for possible fraud. If suspicious activity is detected then preventative measures are taken on your behalf
Call Barring
Inbound/OutboundBlock inbound/outbound calls from/to certain destinations
Use With Microsoft Teams
YesWith our Voice for Teams product you can make and receive calls on your Teams client
3rd Party Phone System Compatibility
Yes, SIP-basedCan be used with most phone systems supporting the SIP protocol
Bandwidth Required
100kbps – 500kbpsThis is for 5 simultaneous calls. With compression this can be reduced to 150kbps
10 Channels
Number of channels
10The number of calls you can make / receive simultaneously
Included Minutes
NoFor trunks with included minutes please visit our call plans page
Available Numbering
UK & International Add numbers to your SIP trunk to receive calls. Visit our Phone Numbers page for more information
Number Porting
YesPort your existing UK & International numbers to our network
Fraud Detection And Prevention
YesCalls going out through your trunk are monitored for possible fraud. If suspicious activity is detected then preventative measures are taken on your behalf
Call Barring
Inbound/OutboundBlock inbound/outbound calls from/to certain destinations
Use With Microsoft Teams
YesWith our Voice for Teams product you can make and receive calls on your Teams client
3rd Party Phone System Compatibility
Yes, SIP-basedCan be used with most phone systems supporting the SIP protocol
Bandwidth Required
100kbps – 1Mbps
30+ Channels
Number of channels
30+The number of calls you can make / receive simultaneously
Included Minutes
NoFor trunks with included minutes please visit our call plans page
Available Numbering
UK & International Add numbers to your SIP trunk to receive calls. Visit our Phone Numbers page for more information
Number Porting
YesPort your existing UK & International numbers to our network
Fraud Detection And Prevention
YesCalls going out through your trunk are monitored for possible fraud. If suspicious activity is detected then preventative measures are taken on your behalf
Call Barring
Inbound/OutboundBlock inbound/outbound calls from/to certain destinations
Use With Microsoft Teams
YesWith our Voice for Teams product you can make and receive calls on your Teams client
3rd Party Phone System Compatibility
Yes, SIP-basedCan be used with most phone systems supporting the SIP protocol
Bandwidth Required
100kbps – 3Mbps
How SIP Trunking works
SIP (Session Initiation Protocol) is a signalling communications protocol used to create, manage and terminate multimedia communication sessions in an IP-based network.
A session could be a simple two-way telephone call, or it could be a collaborative multi-media conference session. Once the session is set up, further protocols/software (e.g. codecs) are required to convert the audio stream over SIP.
SIP trunking provides virtual telephone lines over a high-speed IP network, connecting to an IP PBX. In Telappliant’s case, this is a VoIPOffice (i.e. a hosted PBX). Thus, all the customer needs is a fast internet connection, and this, in turn, dictates the number of concurrent calls to be made.
TalkAssure interoperability
Our SIP trunks have been tested and work with the following phone systems and hardware manufacturers:
3CX
Asterisk
Avaya
Cisco
Digium
Draytek
Grandstream
Mitel
Panasonic
Patton Gateways
Sangoma Gateways
Siemens Gigaset
Snom
Yealink

SIP Trunking and Microsoft Teams
TalkAssure is fully compatible with Telappliant Voice for Teams, allowing you to use your Microsoft Teams client as a Business Phone. For more information, please visit Voice for Microsoft Teams page, or speak to your account manager.
Use Microsoft® Teams as your Business Phone. Empower your remote workforce, enhance collaboration and unify all forms of communication via a single solution, all with minimal cost.
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