Cisco
Register a Cisco 68xx or 88xx multiplatform (MPP) phone as a desk handset or on a desk phone line.
You need the phone's SIP credentials: for a desk handset — a person's or a shared one like the reception phone — click Show setup link on its row in Settings → Phone → Voice & calling → Calling devices; for a desk phone line, on the number's card in Settings → Call routing. See Desk phones for the difference.
These steps apply to multiplatform (MPP) firmware — the open-SIP variant. A phone running Cisco's Enterprise firmware must be converted to MPP before it can register with a third-party SIP service.
Connect the phone to your network and power. Press Applications → Status → Network status to read its IP address.
In a browser on the same network, open https://<phone-ip> and switch to
Admin Login → advanced.
On the Voice → Ext 1 tab, fill in:
- Line Enable: Yes
- Proxy (under Proxy and Registration): the server shown under
Show setup link —
sip.telnyx.eufor a UK practice,sip.telnyx.comfor a US one - Register Expires:
180 - Display Name: your practice name
- User ID and Auth ID: the line's username
- Password: the line's password
- SIP Transport (under SIP Settings): TLS, port
5061
Under Voice → Ext 1 → Audio Configuration, put G722 first, then G711a and G711u in the UK (G711u before G711a in the US), and leave G729 out. Set SRTP, the keep-alive and DTMF to the values in the settings every phone needs.
Click Submit All Changes. The phone reboots and the line label stops flashing once registered.
Call the number from a mobile — the handset rings. If the line is two-way, dial out to confirm outbound.
Cisco's MPP documentation lives at cisco.com, and the carrier's guide is Cisco: 68xx/88xx setup.