SIP Trunking That Connects Your PBX to the PSTN

SIP trunking is a virtual connection that links your IP-PBX or softswitch to the public telephone network (PSTN) over the internet, replacing physical phone lines. Instead of buying fixed lines, you provision SIP channels that carry concurrent calls and scale up or down on demand.

One SIP channel carries one concurrent call. Size your trunk to your busy-hour peak — the maximum number of simultaneous calls you expect at once, not your total user count. MeraTalk trunks are elastic, so you can add channels instantly as demand grows instead of provisioning fixed capacity.

Yes. MeraTalk supports standards-based SIP and interoperates with common IP-PBX and softswitch platforms including Asterisk, FreeSWITCH, 3CX, Cisco, Avaya, and cloud UCaaS systems. Bring your own carrier (BYOC) setups are supported so you can keep your current platform.

MeraTalk protects trunks with IP authentication, optional SIP/TLS and SRTP encryption, real-time fraud monitoring, and international premium-rate call controls to guard against toll fraud (IRSF). Traffic runs on an FCC-licensed, STIR/SHAKEN-aligned network.

MeraTalk trunks support automatic failover and call rerouting. If a primary endpoint becomes unreachable, calls redirect to a backup route or destination you define, so inbound calls are never lost during an outage.

Yes. You can port existing numbers to MeraTalk or provision new local, national, and toll-free DIDs. Number porting typically completes in 5–10 business days, with a temporary number available immediately so there is no downtime.