Frequently asked questions

SIP trunking connects your PBX (phone system) to the public telephone network over the internet. Instead of traditional phone lines, calls travel over your internet connection. You pay per minute, with no per-channel fee, and you can scale up without ordering circuits.

Every account gets its own SIP domain in the form yourdomain.s1.ipcomms.net. Point your trunk at it on port 5060 (UDP or TCP) or 5061 (TLS), and authenticate either by registering with your trunk credentials or by IP authentication from a static public IP that you enter in the portal. Allow both IPComms points of presence, 34.23.59.14 and 136.117.213.88, through your firewall so inbound calls reach you from either one. Platform guides: SIP configuration.

We offer a 30-day test trunk on request: one local number and a small calling credit, with your card on file but not charged until the trial ends. Request a test trunk. There are no contracts or minimums on a regular account either, so you only pay for what you use.

• $0.010/min outbound to the US and Canada
• $0.009/min inbound to local numbers
• $0.020/min inbound to toll-free numbers
• $1.50/month per local number, $1.00 one-time setup
• $2.00/month per toll-free number, $1.00 one-time setup
• $2.50/month per number for E911
• $5.00 per number to port in, with volume discounts for 100 or more
• $0 per channel, no monthly trunk fee

Full rate table: SIP trunking pricing.

No. Service is month to month. Cancel any time; numbers can be ported out during the notice period.

G.711 µ-law, G.711 A-law and G.729. The codec is negotiated per call from what your PBX offers.

Yes. Connect on port 5061 for TLS (encrypted signaling) with SRTP (encrypted media). Our carrier legs are encrypted as well, so a TLS trunk is encrypted on both sides of the network.

There is no per-channel fee and no set channel count on an IPComms trunk. New accounts start with a fraud-protection limit that support raises on request; tell us your expected peak. Beyond that, concurrent calls are limited by your bandwidth (about 100 kbit/s per G.711 call, each way) and your PBX. Size it with the channel and bandwidth calculator.

Yes. Calls that present a number on your account are signed at A attestation, outbound and inbound. That is why outbound caller ID must be a number assigned to your account.

Yes. Porting costs $5.00 per number, with volume discounts for 100 or more, and takes 3–10 business days depending on the releasing carrier. We coordinate with your current carrier; you supply a recent bill and a signed Letter of Authorization. See number porting.

Local numbers across US and Canadian area codes, toll-free numbers in the 800, 888, 877, 866, 855, 844 and 833 ranges, and international numbers in selected countries. Search live inventory on phone numbers.

Any SIP-compatible PBX or SBC: Asterisk, FreePBX, 3CX, FreeSWITCH, FusionPBX, Issabel, VitalPBX, Yeastar, Microsoft Teams Direct Routing, and commercial systems from Cisco, Avaya and Mitel. Contact center platforms connect by BYOC; see SIP trunking.