Non-BTAM Bisync Support for Universal Link
Maintain and modernize 2780/3780 RJE-style Bisync communications without relying on the BTAM access method. Universal Link embeds equivalent functionality and adds flexible dialing options, while also supporting SNA and TCP/IP for a smooth migration path.
Why Non-BTAM Bisync?
Many IBM mainframe sites still need to communicate with remote Bisync devices or systems using the 2780/3780 RJE protocol. With IBM deprecating BTAM under OS/390 and VSE/ESA, Universal Link removes the dependency by providing built-in, BTAM-equivalent support.
- Continue existing Bisync workflows without BTAM
- Preserve compatibility with remote 2780/3780 RJE devices
- Consolidate operations with the same Universal Link management and auditing
Dialing & Connectivity Options
Choose the dialing method that fits your environment; Universal Link supports multiple options:
- V.25 bis auto-dial
- SADL (Switched Access Dedicated Line)
- Traditional Auto-Call units
Works with any 37xx-compatible communications control unit that supports Bisync.
Operations & Reliability
- Host- or remote-initiated sessions
- Scheduling windows; unattended operation (autodial/autoanswer)
- Error recovery/restart for long-running transmissions
- Broadcast to multiple remotes without duplicating inputs
- Automatic EBCDIC ↔ ASCII translation
- Record sizes up to 4,096 bytes (transparent/compressed data supported)
Security & Migration
- Mainframe-controlled sessions with user ID/password verification
- Integration with RACF, ACF2, and Top Secret
- User exits to invoke external programs at key events
- Audit trails and transmission reports for governance
- SNA (LU6.2/LU1) and TCP/IP support included for phased migrations
Compatibility
Designed for MVS and VSE environments and engineered to be release-independent across supported mainframe versions.