Methods and arrangements are disclosed for transferring
digital data over a limited speed communications link between a
client side subarrangement (401) and a
server side subarrangement (402). Within the
client side subarrangement (401), a
client application (411, 502) receives and transmits
digital data using a first
communications protocol stack (412, 503, 504, 505) and, within the
server side subarrangement (402), a
server application (426, 572) receives and transmits
digital data using the first
communications protocol stack (425, 573, 574, 575).
Digital data is transferred between the client application (411, 502) and the server application (426, 572) through a client proxy (511) within the
client side subarrangement (401) and an access gateway (551) within the
server side subarrangement (402). Said client proxy (511) performs protocol conversations between the first
communications protocol stack (412, 503, 504, 505) and a second communications
protocol stack (415, 521, 522, 523, 524, 525, 526) that provides a bandwidth efficiency that is better than a bandwidth efficiency to which the first communications protocol corresponds.