From another SIP phone, dial your Symbian device’s SIP URI. The device will ring like a cellular call but display “Internet call” banner.
When Nokia released Symbian^3 version 1.0 (found on early firmware for the Nokia N8-00 and C7-00), the integrated "Internet Telephone" profile utilized SIP VoIP version 3.1. This was a relatively mature implementation of RFC 3261. Unlike modern smartphones (iOS/Android) that rely on push notifications, the Symbian SIP stack was a native, always-on client requiring persistent background connections.
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Before diving in, ensure you have:
Before starting, ensure your phone has the "SIP VoIP" application installed. From another SIP phone, dial your Symbian device’s SIP URI
Use the following fields – these match the “full” settings schema version 3.1:
| Field | Recommended Value / Explanation |
|-------|--------------------------------|
| Service profile | IETF |
| Default access point | Your Wi‑Fi access point (must be already set up) |
| Public user name | sip:yourusername@yourdomain.com (e.g., sip:101@192.168.1.100) |
| Use compression | No (Symbian 3.1 does not support SigComp reliably) |
| Registration | Always on |
| Use security | No (v1.0 firmware fails with TLS; use LAN only) |
| Proxy server | sip:192.168.1.100:5060 (replace with your PBX IP) |
| Registrar server | Same as proxy if using same server |
| Realm | asterisk (or domain from PBX) |
| User name | Your SIP user ID (e.g., 101) |
| Password | Your SIP password |
| Transport type | UDP |
| Port | 5060 |
| Keep‑alive | 30 seconds (critical to keep NAT binding) | When Nokia released Symbian^3 version 1
Full 3.1 spec includes also optional:
Outbound proxy(leave empty if not needed),Route(empty), andCodec priority(see Step 4).