Understand requirements for using a hosted or cloud-based telephone system with Vocera
Voice Server.
Requirements for Connecting the Vocera SIP Telephony Gateway to a Cloud-based or Hosted
Telephone System
The Vocera SIP Telephony Gateway (VSTG) can connect to a SIP trunk on a hosted or
cloud-based PBX either directly or through a SIP gateway configured at the network edge. To
successfully connect and interoperate the SIP trunk used by the VSTG, your telephone system
must support the following requirements:
- SIP version 2.0 as specified in RFC 3261.
- RFC 2833 standard DTMF in order to support features such as paging and dialing Vocera
extensions through the guest access number.
- Real Time Protocol (RTP) audio to the VSTG must use the G.711 µ-Law or A-Law codec.
The packet spacing must be 20 milliseconds.
If you experience interoperability challenges with a SIP trunk supporting these standards,
please contact Vocera Technical Support for further assistance
What is Not Supported
The VSTG does not support these features:
- SIP Trunk Authentication
- SIP Trunk Registration
- NAT Traversal