The GreenPacket DT-350 TD-LTE indoor router includes an integrated hardware VoIP FXS port (RJ-11) for connecting analog telephone handsets directly to SIP servers (such as Asterisk, FreePBX, or telecom IMS gateways). However, on many telecom-branded firmwares (such as Irancell), the VoIP menu is hidden from standard administrative accounts.
Hardware: GreenPacket DT-350 TD-LTE Router • RJ-11 POTS Handset • SIP Protocol
1. Accessing Hidden VoIP Menus
Log in with the root/operator credentials (or inspect the web GUI source to reveal hidden navigation items under /voip_settings.html or /sip.html).
2. SIP Account Configuration
SIP Proxy / Registrar: YOUR.PBX.SERVER.IP
Port: 5060
SIP Transport: UDP
Outbound Proxy: (Optional, set if behind telecom NAT)
Account / Display Name: 101
Authentication Username: 101
Secret / Password: YOUR_SIP_SECRET
Codec Priority: G.711u (PCMU), G.711a (PCMA), G.729Save and apply settings. Once registered, the Phone LED on the router faceplate illuminates solid green, and connected analog handsets will receive dial tone.
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