Configure a Cisco phone with a SIP account
How to register a Cisco phone on a Vohippo SIP account from the phone's web interface. All you need is the phone's IP address and the account's username and password, which you find in the portal.
How do I open the phone's web interface?
First check the firmware: only Cisco phones with multiplatform firmware (MPP, also called 3PCC) and SPA models register with a SIP provider. On these the web interface opens from the phone's IP address; to see every field you need admin access in advanced mode.
- The phone and the computer must be on the same network
- Type the phone's IP address into the browser, for example http://192.168.1.50
- If the default password does not work, check the phone's label or the model's manual
Which fields do I fill in?
The path is Voice → Ext 1 (one Ext page per line). Fill in the fields like this, with your SIP account details:
- Line Enable: Yes
- Proxy: sip.vohippo.com
- Display Name: the name to show
- User ID: the SIP account's username
- Password: the account's password
- Use Auth ID: Yes, and Auth ID: the same username (on models that have the field)
SIP account on the phone
Username and password are in the portal: one account per phone, with its own channels and limits.
- Server sip.vohippo.com, port 5060 UDP
- Username and password of the SIP account
- Codecs G.711 a-law, µ-law and G.722
How do I check that it is registered?
Save and wait a few seconds. The account status shows on the web interface's status page and, usually, on the phone's display.
- Registered status: the account is live, you can make a test call
- In the portal, under SIP accounts, the account shows as registered
- Call a mobile phone: if you hear and are heard, you are done
What to know about Cisco phones
Menu items can change slightly between models and firmware versions: if a field is missing, look for the one with the same meaning.
- Cisco phones with CUCM (Cisco Unified Communications Manager) firmware do not register with a SIP provider: they need multiplatform firmware
- Moving to multiplatform firmware depends on the model and the licence: check with your Cisco reseller
- The registration status shows on the web interface's Info or Status page
If something goes wrong
The problems are almost always the same on every brand: they are explained in full in the general VoIP phone guide.
- Registration rejected (403): wrong username or password, often a trailing space copied by mistake
- Registration that comes and goes: expiry too long behind a router that closes ports, try 300-600 seconds
- One-way audio: almost always NAT, turn off the router's SIP ALG
Frequently asked questions
My Cisco has no Voice page: why?
It probably runs CUCM firmware, or you are not in advanced mode. With CUCM firmware the phone does not register with a SIP provider.
What are MPP and 3PCC firmware?
They are the names of Cisco's multiplatform firmware, the one that lets the phones register with any SIP provider.
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