Cisco SIP based phones have SIP extensions that use the SIP protocol for Cisco proprietary operations like registering a Cisco SIP phone by MAC Address. This blog will take a high level look at ...

Phase 0 testing: Run tests on phones as configured on one PBX: Asterisk. This is to validate basic “phone is not broken” behavior. Phase 1 testing: Move phones to the PBXs as assigned. Make calls, ...

SIP trunking is a type of protocol used for VoIP, although the relationship between the two has often been confused. In this article, we’ll take a close look at what exactly SIP is, what SIP trunks ...

While setting up a SIP phone at home, I noticed something surprising - most SIP providers don't seem to offer any kind of encryption on the connection; both voice data and login data is done in clear ...

The promise of SIP has always been interoperability, and the three SIP-based phone systems we reviewed demonstrate why real standards are important. The interoperability part of the equation works, ...

I've ran into a strange problem at one of my clients. They use shortlesky cloud IP telephony service and use Cisco 7960 IP phones. The configuration is done through IP SLA tracking. The phones do work ...

Skype is diving deeper into the business phone market with a system that lets companies integrate their existing, open VOIP phone systems with Skype’s proprietary VOIP service. The new offering, ...

Aiming to let enterprises do more with their IP (Internet Protocol) telephony systems and keep them available when a network goes down, Avaya introduced new software, phones, and a gateway at this ...