Gandalf Technologies Inc’s Gandalf Digital Communications Ltd unit in Warrington, Cheshire has released Access ISDN, a Primary Rate ISDN multi-function communications device. Developed initially for the UK Post Office, the product is designed for PABXs that cannot link digitally to public or private ISDN networks. Access ISDN’s Primary Rate subsystem offers T1 and E1 formats, and supports the DASS II and Q.931 common channel signalling protocols. DPNSS is also supported, enabling connection to public or private switches from all leading vendors, claims Gandalf. This provides gateways to services from operators, including British Telecommunications Plc and Mercury Communications Ltd Virtual Private Network services. The unit is claimed to handle digital and analogue voice, X25, SNA, Statmux and local network data traffic. A Hyperchannel Module supports data rates up to 1,920Kbps over public and private ISDN. A suite of network management applications is also available, with diagnostic and maintenance features. A routing and digit modification facility enables Access ISDN to deliver calls via the most appropriate route. Centralised call logging is available, with an algorithm to transport call records to a data processing environment for billing and network planning.
