Freedom251 › Fax Server Software
IsoFax
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| IsoFax | Pricing based on number of fax lines | On request |
As isofax.com lists them, read 8 Oct 2026. The maker's own page has the final word.
Facts from IsoFax's own pages
- Coversheets
- IsoFax supports client- or server-generated coversheets, including server-side coversheets for large distribution lists. · isofax.com, 8 Oct 2026
- Downloads
- Access to the Bristol Group Downloads page requires contacting technical support for a password. · isofax.com, 8 Oct 2026
- Fax capacity
- The site lists up to 128 digital fax modems per server, or standard analog fax modems. · isofax.com, 8 Oct 2026
- Fax over IP
- IsoFax 12.2 supports inbound and outbound Fax over IP using the Dialogic Brooktrout SR-140 T.38 stack. · isofax.com, 8 Oct 2026
- Founded
- 1987 · isofax.com, 28 Sept 2026
- Maintenance terms
- Customers under maintenance can rehost an IsoFax server without charge, and US customers with maintenance contracts are entitled to a backup license set. · isofax.com, 8 Oct 2026
- Maker and history
- The product is offered by The Bristol Group, Ltd., which says it was founded in 1987. · isofax.com, 8 Oct 2026
- Product
- IsoFax is a centralized network fax solution for high-volume fax delivery. · isofax.com, 8 Oct 2026
- Queue management
- The server monitors submitted fax queues and modem pools, supports multiple queues with selectable priorities, and logs fax activity. · isofax.com, 8 Oct 2026
- Routing and retries
- Features include least-cost routing across geographically distributed fax servers and retries that resend only failed pages while avoiding calls identified as non-fax calls. · isofax.com, 8 Oct 2026
- Security statement
- The maker describes IsoFax as secure and says T.38 allows private, error-free faxing between an IsoFax server and PSTN gateway or between T.38-capable endpoints. · isofax.com, 8 Oct 2026
- SIP connectivity
- The maker says customers can connect through PBXs and SBCs such as Cisco and Avaya, or directly to T.38-capable SIP trunks including Verizon, CenturyLink, and Sprint. · isofax.com, 8 Oct 2026
- Submission methods
- Faxes can be submitted through Windows and Unix GUI clients, scripts using the IsoFax toolkit/API, or SMTP email with MIME attachments. · isofax.com, 8 Oct 2026
- Support
- Technical support is available by email and at +1 415-256-2525, press 2. · isofax.com, 8 Oct 2026
- Supported operating systems
- The site lists Linux, Windows, Solaris, HP-UX, and AIX as supported platforms. · isofax.com, 8 Oct 2026
- Web access
- The product description lists web clients alongside GUI clients, routing options, email-to-fax, and APIs. · isofax.com, 8 Oct 2026
Where IsoFax stands on Freedom251
- Fax Server Software#19 of 23