I don't think that HSSI was designed as a point solution until ATM came along. Couching your answers in the context of an ATM solution is presumption, or so it appears to me.
-- --bill
Are you talking about point-to-point ATM or just point-to-point applications in general?
My wild-assed guess would be that about 45% of HSSI boards are running point-to-point HDLC or PPP and 45% are running Frame, with the rest SMDS and ATM and god knows what else.
Avi
The orginal question can be paraphrased as; "which board is better" (see the subject line). Tim S. couched his replies in the form of an ATM only solution. I feel that the HSSI board was not designed as such. Your comments seem to back up my assertions. I would claim that for raw throughput, and assuming the DS3 daughtercard for the AIP, that the HSSI board delivers more useful bits at the expense of an outboard CSU. This is based on my feeling that HDLC is more efficent than ATM signaling/framing. -- --bill