- 21 Mar 2014Aastra Announces New 6800i IP Phones
- 30 Sep 2013Aastra Named Major EMEA Digital Handset Supplier
- 19 Jul 2013HP Names Aastra An AllianceONE Partner of the Year
- 12 Jul 2013InfoTech Rates Unified Comms Player Aastra Highly
Read More Aastra News
Aastra SIP Phones
Session Initiation Protocol (SIP) is an IETF-defined signalling protocol used mainly for controlling voice and video communication sessions over Internet Protocol (IP). Also known as VoIP phones or soft phones, SIP phones allow phones calls to be made using VoIP (Voice over Internet Protocol) technology.
The Aastra SIP phone range offers its enterprise customer a wide range of SIP phones which make up the product ranges – the 673xi and the 675xi. For more details of each Aastra SIP phone range, follow the links below: