SIP & Hosted

SIP Trunks allow your businesses to retain the advantages of your existing telecoms equipment, whilst gaining the additional functionality and benefits of IP Telephony. You can retain your existing handsets and have the flexibility to add remote or central IP users when needed. Although not the first VoIP trunking technology available to small and midsize companies, SIP trunking will be the first to have a widespread impact on phone communications for enterprises.

You can also choose to deliver your data services over the same SIP trunk meaning that only one connection is needed for voice and data. Reduced connections means there are less interfaces, reduced hard costs, better efficiency and increased reliability.

Excell's SIP trunking connects existing customer PBX, IP PBX or Key Telephone Systems to Excell's resilient hosted SIP platform.  Customers connect their PBX either directly or via a preconfigured SIP-ISDN gateway.

Gateways are available for both ISDN30 and ISDN2 connectivity (should the PBX not be IP enabled). 

Each SIP trunk can contain between 1 and 120 channels, with each channel representing one concurrent call. Channels are usually scaled in exactly the same way as ISDN (i.e. roughly one channel per six users - dependant on call volume).