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How PSTN and ISDN switch off will impact your business

How PSTN and ISDN switch off will impact your business. As we all know, in 2015 BT announced that they will be switching off the PSTN and ISDN networks by 2025. With this, BT will no longer accept any new orders or amendments to services applicable to any ISDN products from 2020. Once the switch-off has taken place, customers will be migrated to the IPEX (IP Exchange) core network using SIP (S...
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SIP Response Codes Session Initiation Protocol

SIP (Session Initiation Protocol) is a signaling application layer protocol designed to create, modify, and terminate a multimedia session over the Internet Protocol. It is the most common protocol used in VoIP technology. In SIP, every network element is identified by a SIP URI (Uniform Resource Identifier) which is like an address. They are broken down as 1xx Provisional Responses, 2xx Successfu...
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