Orbtalk have a range of SIP trunk products that work with the Avaya Quick Edition
Avaya Quick Edition delivers intelligent communications to small businesses and Enterprise small branch offices.
With SIP-based peer-to-peer technology, all the intelligence resides in the VoIP telephone set.
Within minutes all users have access to the most commonly used set of telephony features previously performed by a centralized server including voicemail, conferencing, and auto-attendant.