Support / Voice / Phone / Cisco MPP

Configure Cisco MPP phones for VoiceTel.

Cisco IP Phones 7800/8800 series running Multi-Platform (MPP) firmware operate as standard SIP endpoints — different from Cisco UCM-tied phones. Provision via the web UI or via Cisco's redirection service for fleets.

Convert from Enterprise firmware (if needed)

Phones bought through a Cisco UCM-tied channel ship with Enterprise firmware that doesn't accept third-party SIP. Convert to MPP firmware first:

  • Download the MPP firmware image from Cisco's downloads area for your model.
  • Upgrade via Admin Login → Voice → Provisioning → Firmware Upgrade Rule.
  • The phone reboots into MPP mode after the upgrade.

Web UI configuration

  1. Press Settings → Status → Network → IPv4 to find the IP.
  2. Open http://<phone-ip>/admin/advanced. Sign in (the admin URL appears once Admin Login is enabled under Voice → System → System Configuration).
  3. Open Voice → Ext 1.
  4. General section:
    • Line Enable: yes
  5. Proxy and Registration:
    • Proxy: the SIP server host shown in your customer portal
    • Outbound Proxy: same as Proxy
    • Use Outbound Proxy: yes
    • Register: yes
    • Register Expires: 360
  6. Subscriber Information:
    • Display Name: the user's name
    • User ID: the SIP username from VoiceTel onboarding
    • Password: the SIP password from VoiceTel onboarding
    • Auth ID: same as User ID
  7. SIP Settings:
    • SIP Transport: UDP
    • SIP Port: 5060
  8. NAT Settings:
    • NAT Mapping Enable: yes
    • NAT Keep Alive Enable: yes
    • NAT Keep Alive Msg: $NOTIFY (or REGISTER)
    • NAT Keep Alive Dest: $PROXY
  9. Audio Configuration:
    • Preferred Codec: G711u
    • Second Preferred Codec: G711a
    • DTMF Tx Method: AVT (RFC 2833)
  10. Click Submit All Changes at the bottom.