Isn't that SLC (Subscriber Line Card) instead of SLIC? Robbed-bit
signalling can be used in absence of SLC's. My local GTE CLEC uses
GDT5 switches which are configured with robbed-bit signalling.
Robbed-bit signalling has minimal impact on modem throughput. Look
through the archives of comp.dcom.modems and comp.dcom.telecom.tech.
I've seen several users connect to our PM3 pool at 52K and many
above 50K. V.90 has a theoretical max of 56K precisely because of
the robbed bit; otherwise it could achieve 64K.
--matt
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