What is the PSTN and ISDN Network?
The PSTN (Public Switched Telephone Network) and ISDN lines (Integrated Services Digital Network) networks are copper wire analogue telephone line services. Analogue telephone lines transmit voice as electrical signals. When you speak, the phones microphone converts the sound your voice makes into electrical waves. These waves broadcast over the phone line to the end destination.
What is replacing the PSTN and ISDN Network and why?
With the advances in the reliability of IP technology/broadband services such as FTTC, FTTP and Fibre Ethernet it has enabled providers to transmit Voice services over Internet Protocol. With a VOIP service your Voice is converted into a digital signal that travels over an Internet connection.
Due to the advances in broadband and VOIP it made sense for network operators to run one network instead of two networks hence the announcement by BT Openreach to close the PSTN network.
Is your business ready for the UK’s analogue switch off? View our video on the PSTN switch off.
How and when will the PSTN switch off happen?
There is a 6-step process in the switch off PSTN services. In 2017 BT Openreach announced the network switch off by 2025 with a planned stop sell (no new analogue lines to be sold) on exchanges that started in Dec 2020 and then an end-of-life announcement for all analogue services by the end of December 2025.
BT Openreach announced plan to switch network off
Salisbury exchange first to trial stop sell.
A further 169 exchanges were announced as stop sell.
Salisbury and Mildenhall exchanges announced as end of life for analogue services.
UK wide stop sell, no further analogue lines can be purchased nationwide.
End of life process for all land lines and analogue telephony services.
PSTN Switch Off Stop Sell Tranche Dates
Stop Sell is a process where Openreach stop selling analogue products on set telephone exchanges. Stop Sell is different to product withdrawal as customers can continue to use the legacy analogue products however new orders at the exchange must use new SOGEA or FTTP technology.Complete Exchange List
What are the benefits of moving to a digital voice service?
Voice Over Internet Protocol (VOIP) is the new digital standard for telephone services and has many benefits over analogue landlines.
How do you switch to a Digital Voice Service?
Our 3 step process makes switching to a VOIP service hassle free.
CHECK FOR SOGEA
Use our SOGEA checker to check for SOGEA FTTC, FTTP, and Ethernet Leased Line servicesCheck Now
CHOOSE A REPLACEMENT PRODUCT
Speak to one of our Digital Voice experts to find a suitable replacement service with options available from SIP, Microsoft Teams Phone, 3CX and our Hosted cloud telephony solutions.Chat With Us
PORT YOUR NUMBERS
With our managed porting service we will make sure all of your existing analogue telephone numbers are ported across to your new digital phone system seamlessly.Chat With Us
What are the replacement products to future proof your telecoms?
Stream Networks have a range of new services to support your migration from legacy systems to an all IP Technology based future.
BROADBAND CONNECTION SERVICES
Stream Networks has a range of connectivity services from ADSL, to FTTC, and new Full Fibre Broadband (FTTP) to ensure you have best the connectivity for your VOIP services.GET STARTED
Our SIP (session initiation protocol) services allow you to connect your PBX/ business telephone system to digital phone lines replacing ISDN2 and ISDN30 services.GET STARTED
Connect to our Cloud telephone services for crystal clear telecommunications, enterprise functionality, and per user per month pricing with inclusive handsets.GET STARTED
TEAMS DIRECT ROUTING
With a Teams Direct Routing solution from Stream Networks you can use your Microsoft O365 for business phone services and voice calls.GET STARTED
Our Voice express service is the perfect solution for single landlines allowing you to migrate your phone number and landline to a VOIP service in 1 easy step.GET STARTED
ETHERNET LEASED LINES
With a Stream Networks Leased Line get guaranteed latency and throughput for superior real time communicationsGET STARTED
3CX PHONE SYSTEM
3CX is a leading provider of hosted VOIP communications for business. The 3CX phone system delivers, messaging, live chat, business SMS and Video ConferencingGET STARTED
Stream Networks range of business mobile services include Multi Network SIM Cards to ensure the best mobile signal wherever you are locatedGET STARTED
What is VOIP?
VOIP stands for Voice Over Internet Protocol. It is a way of sending voice over an IP or digital network.
With an analogue phone service when you speak into a microphone the soundwaves your voice make are transmitted into electrical signals which are then transmitted over the analogue network. With a digital VOIP service your voice soundwaves are converted into a digital signal which is carried over the Internet in packets of data using the Internet Protocol.
With advances in VOIP protocols in-conjunction with the reliability and speed of broadband services, ensures digital voice delivers a better service over equivalent analogue phone lines.