Technical reference
IBeX4 technical reference
Features, codecs, interoperability and requirements for engineers evaluating IBeX4.
Features
Call features
- Auto attendant and IVR
- Call queues and agents
- Voicemail, voicemail to email, web voicemail
- Conference bridges
- Call recording and monitoring
- Call parking and pickup
- Call forwarding and follow-me
- Blind and supervised transfer
- Caller ID routing and blocklists
- Dial by name directory
- Music on hold
- Overhead paging
- Ring groups and hunt groups
- Time and date routing
- Remote and roaming extensions
- Call detail records (CDR)
- Text-to-speech
- CRM integration (AMI, ARI, AGI)
- Three-way calling
- Do not disturb
- Emergency call routing
All features are included in every subscription. See every feature explained in plain English.
Media
Supported codecs
- G.711 (u-law and A-law)
- G.722
- G.729A
- G.726
- GSM
- iLBC
- Speex
- H.264 video
- H.263 video
Interoperability
Standards and connectivity
| Call engine | Based on Asterisk 22 (currently 22.8.2, long-term support release), packaged and tested by FTI |
|---|---|
| System design | Minimal Debian 13 build, OS and kernel modified through Debian packages; no database or web GUI on the system |
| Signalling | SIP (PJSIP) and IAX2 |
| Phone network | SIP Trunking from any provider, or SIP Trunking & IP Interconnection from IBeXc |
| Legacy telephony | T1/E1, PRI (National ISDN2, DMS100, 4ESS, Lucent 5E, EuroISDN), E&M and analog FXS/FXO through SIP gateways |
| Management | IBeX System Management Console (text-based, over SSH or console); Asterisk CLI for administrators |
| Records | Call detail records (CDR) |
Requirements
System requirements
| Operating system | Debian 13 (installs anywhere Debian 13 runs) |
|---|---|
| Install targets | Virtual machine, LXC container (e.g. Proxmox VE), or a dedicated server |
| Virtual environments | Almost any environment that runs Debian 13, e.g. Proxmox VE (reference platform, VM or LXC), VMware, Microsoft Hyper-V, KVM |
| Public clouds | Any cloud offering Debian 13 virtual machines, e.g. Microsoft Azure, Google Cloud, AWS |
| Tested capacity | Tested to 8,500 simultaneous calls on FTI’s virtual machine systems, and the limit was our test equipment, not IBeX4. |
| High availability | Standby instance with hypervisor clustering or failover (standby licence included) |
| Updates | Automatic over the Internet after alpha and beta release stages |
Questions
Technical questions
What codecs does IBeX4 support?
G.711, G.722, G.729A, G.726, GSM, iLBC and Speex for audio, and H.263 and H.264 for video.
Does IBeX4 support T1 and PRI?
Yes. In a VM or container, through SIP gateways; on a dedicated Debian 13 server, also through telephony cards.
Is IBeX4 based on Asterisk?
Yes. IBeX4’s call engine is based on Asterisk 22, structured, extended and tested by FTI as part of an integrated platform.
Which version of Asterisk does IBeX4 use?
IBeX4 is based on Asterisk 22, the current long-term support release of Asterisk.
What operating system does IBeX4 run on?
Debian 13. IBeX4 installs anywhere Debian 13 runs: a virtual machine, an LXC container (for example on Proxmox VE) or a dedicated server.