Unlike legacy, device-side Telnet/SSH terminal emulation based on TCP/IP, ESP's UDP/IP-based host-communication scheme is "inherently compatible" with VoIP applications, the companies say.

HipVoice says its push-to-talk software allows workers to instantly talk with each other using Symbol handhelds, by simply clicking on the name of the person they want to speak to. The software supports hands-free, full- or half-duplex voice modes.

Stay-Linked provides centralized, secure, high-performance wireless access to 5250/3270, VT100/220, and SSHv2 host-based screen applications, according to ESP. According to ESP, all terminal emulation and client device/session control functions run natively on the same host system as the Telnet or SSH server, with only a thin-client software component loaded on each handheld. The application is said to support a wide range of wireless handheld terminals in addition to Symbol's, including those from Intermec, AML, PSC, HHP, LXE, and Psion-Teklogix.

Both companies' applications are Symbol +PLUS Validated for use on Symbol's mobile handheld computers running Windows CE 4.2 or 5.0, Pocket PC 2003, and Windows Mobile 5.0, the companies say.

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