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Digital/TEC definition
of
Session Initiation Protocol
from
Tunstall Healthcare (UK) Ltd
![Tunstall](https://static.wixstatic.com/media/0b12bc_249fe196dec5498780c26fc2309dbf80~mv2.png/v1/fill/w_81,h_81,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/_edited_edited.png)
Signalling method typically used for the establishment of VoIP telephone calls. Generally, a SIP service will be needed at the ARC to receive/deliver VoIP calls.
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