SIP / IAX Trunks
Your PBX, connected.
Without the shackles.
Already have a VOIP-based PBX? We provide low-cost SIP trunks. Asterisk user? We offer an Asterisk-optimised IAX trunk (IAX2) with full control over your outbound CLI (Caller ID).
☎
IP PHONE
🖥
SOFTPHONE
YOUR IP PBX
SIP / IAX2 TRUNK
Replaces ISDN or E1
PSTN
Local & IDD calls
No per-channel charging. Just low call charges.
01
No channel shackles
We don't charge per channel — replace costly ISDN lines with flexible SIP trunks and pay only low call charges.
02
DDIs routed inbound
Any DDI numbers you require, routed for inbound calls — keep existing ranges or add new ones.
03
Asterisk optimised
IAX2 trunks tuned for Asterisk, with full control over your outbound CLI (Caller ID).
Implementation
Up and running within days.
Unsure how to implement your trunk? We'll help you configure it against your PBX and get you live within days — with our engineers on hand throughout.
1
Tell us about your PBX
VOIP PBX or Asterisk — we pick SIP or IAX2 accordingly.
2
We provision your trunk & DDIs
Numbers ported or newly allocated, CLI configured.
3
Go live
Local & IDD calls flowing through your new trunk within days.
Remove the shackles of per-channel charging.
Contact us today to see how we can help with your SIP or IAX trunk.
voicelinx.
Voicelinx Ltd · Martin House, 12 Regis Road, London NW5 3EW
Voicelinx © 2026. All rights reserved.
Voicelinx © 2026. All rights reserved.