SCCP phones are registered by MAC address, while SIP third-party phones require the configuration of an end user that is associated to the phone as the digest authentication user on that phone.

An interesting discussion on the Broadband forum of DSLReports.com documents how to reach a Google Voice number via a SIP phone. “this is a direct connection, without going through Gizmo or any other ...

I have a question for all you No Jitter readers: What is SIP used for? If you are like most people in the communications industry, you will tell me that SIP is used to make telephone calls. Some of ...

SIP trunking is a cost-effective option for modernizing legacy phone systems with minimal disruption. Discover the best SIP trunking providers and how to choose one in our complete buyer’s guide. I’ve ...

We know SIP can change telephony but are you willing to change with it? For several years we've heard that SIP as a powerful tool can change what we can do with business telephony. We know SIP can ...

How To Set Up Free SIP Calling On Any Device Your email has been sent Most people communicating on the internet are using SIP calling. Here’s how to make free SIP calls — and when you shouldn’t.

Office phones have come a long way in a relatively short time. With the introduction of Internet Protocol phones, new features make those devices more akin to computers than simple phone systems.