发明名称 |
Method and apparatus for providing ISDN access |
摘要 |
ISDN access to a telecommunications network is provided to customers at different locations by sharing a D-channel controllers (DCC's) positioned within the network in close proximity to the ISDN-capable toll switches serving those customers. The customers provide call set up parameters to a DCC via a user interface system (UIS) at the customers premises that communicates via a dial-up data connection with a respective user support system (USS) connected to the DCC. The DCC in turn formulates ISDN signaling messages that are sent to the switch via a PRI interface and set up an appropriate communications path through the network to a desired destination. Data originating in customer premises equipment is received in the switch via a T1 access line operating in the "non-facility associated signalling" mode. Alternatively, a central USS located in a control center within the telecommunications network, transmits, via dial-up data connections, signalling information to individual USS's supporting associated DCC's.
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申请公布号 |
US5550834(A) |
申请公布日期 |
1996.08.27 |
申请号 |
US19940261626 |
申请日期 |
1994.06.17 |
申请人 |
AT&T CORP. |
发明人 |
D'AMBROGIO, WILLIAM J.;MCCOURT, KAREN M.;PHILLIPS, WAYNE D.;SALEH, PATRICIA D.;SEIP, BARRY S. |
分类号 |
H04Q11/04;(IPC1-7):H04J3/12 |
主分类号 |
H04Q11/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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