The ISDN capabilities of the ARA MultiPort Server are fairly limited. As of September, 1994 the only way to utilize an ISDN link is to purchase an ISDN terminal adapter from Hayes. This device looks like a standard modem to the ARA MultiPort Server, it is an async to ISDN converter. You connect this device to one of the ARA MultiPort Server ports and use the Hayes ISDN Terminal adapter script included with ARA. The Hayes ISDN Terminal Adapter and ARA CCL script are fully supported by Hayes. Users should contact Hayes for any pre-sales, configuration, or user related questions regarding the product.
The MultiPort Server throughput has been tested to 14.4 Kbps per port with all 16 ports populated. We are unsure whether a 16 port configuration would offer reliable connections or meet performance expectations at speeds greater than 14.4 Kbps per port.
The Tech Info Library article titled "Locating Vendor Information" can help you search for a particular vendor's address and phone number.
Here are some of the Hayes' ISDN System Adapter specifications:
* Date announced: 1991
* Compatibility: Stand alone
* Line access standard: Basic Rate Interface (2B+D)
* Reference point: S/T Interface
* Physical interfaces supported: RS-232C; V.35; RJ-11
* Rate adaption standard: V.120
* Central Office switch supported: AT&T 5ESS; Northern Telecom