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SIP Trunking for Kamailio

Enterprise-grade SIP trunks designed for Kamailio SBC and proxy deployments. LCR routing support, dispatcher integration, and engineers who understand Kamailio scripting.

LCR Support

Integrate with lcr module for cost-based routing

Config Examples

Ready-to-use kamailio.cfg snippets

Dispatcher Ready

Load balancing across our gateways

TLS + SRTP

Full encryption support

Kamailio Setup Guide

Configure Kamailio to route calls through IPComms

Define Gateway Parameters

Add to your kamailio.cfg or modparam section:

#!define IPCOMMS_GW "yourdomain.s1.ipcomms.net"
#!define IPCOMMS_USER "YOUR_USERNAME"
#!define IPCOMMS_PASS "YOUR_PASSWORD"
loadmodule "uac.so"
modparam("uac", "credential", "IPCOMMS_USER:yourdomain.s1.ipcomms.net:IPCOMMS_PASS")

Outbound Routing

Add route for PSTN calls:

route[TO_PSTN] {
    $du = "sip:" + IPCOMMS_GW + ":5060";
    # Add authentication header
    uac_auth();
    # Forward to IPComms
    t_relay();
    exit;
}

Dispatcher Configuration (Optional)

For high-availability with multiple gateways:

loadmodule "dispatcher.so"
modparam("dispatcher", "list_file", "/etc/kamailio/dispatcher.list")
# dispatcher.list content:
# 1 sip:yourdomain.s1.ipcomms.net:5060 0 0 weight=100

Inbound Call Handling

Accept calls from IPComms:

route[FROM_PSTN] {
    # Verify source is IPComms
    if ($si != "yourdomain.s1.ipcomms.net") {
        sl_send_reply("403", "Forbidden");
        exit;
    }
    # Route to internal destination
    route(RELAY);
}

Reload & Test

Run kamctl restart and verify with kamcmd dispatcher.list

Simple Pricing

Built for high-volume deployments.

Metered

Predictable costs for steady volume

ChannelNo fee Outbound$0.010/min InboundFree

Pay-As-You-Go

No monthly fees, just usage

Monthly fee$0 Outbound$0.010/min InboundFree

View full pricing

Kamailio FAQ

Which Kamailio version do you support?

We support Kamailio 5.x and newer. Our SIP implementation follows RFC 3261 standards.

Can I use IP-based authentication?

Yes! We can whitelist your Kamailio server IPs for authentication without credentials.

Do you support topology hiding?

Absolutely. Our platform works well with topoh and other SBC modules.

What about rtpengine integration?

Fully supported. Our media servers work seamlessly with rtpengine-based setups.

Next step

$0.010/min outbound to the US and Canada, $0.009/min inbound, $0 per channel, no contracts.