SIP Trunk

Tender description

SLAB runs an internal Mitel telephone system consisting of virtual phone switches, protected on the border by a Mitel Border Gateway. After a major overhaul in 2021, telephony is now provided to users via MS Teams, with inbound/outbound calls routed via the on-prem Mitel telephony solution. With the exception of a small few (up to 10), all Mitel handsets have been removed, and now only exist within shared meeting rooms in our head office. A SIP line sits between Mitel and MS Teams, and said SIP line is provided and supported outside the scope of this tender. Connectivity to external telephony is currently delivered over SIP with all outbound calls and inbound calls to the organisations 500+ publicly available numbers sharing a 30 concurrent channel connection. Calls over the SIP trunk are routed to the external IP of our Sangoma SBC. Lot 1: SLAB runs an internal Mitel telephone system consisting of virtual phone switches, protected on the border by a Mitel Border Gateway. After a major overhaul in 2021, telephony is now provided to users via MS Teams, with inbound/outbound calls routed via the on-prem Mitel telephony solution. With the exception of a small few (up to 10), all Mitel handsets have been removed, and now only exist within shared meeting rooms in our head office. A SIP line sits between Mitel and MS Teams, and said SIP line is provided and supported outside the scope of this tender. Connectivity to external telephony is currently delivered over SIP with all outbound calls and inbound calls to the organisations 500+ publicly available numbers sharing a 30 concurrent channel connection. Calls over the SIP trunk are routed to the external IP of our Sangoma SBC.