IBM i Series, Руководство пользователя

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I/O Adapters and Controllers
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I/O Adapters and Controllers
#4751 PCI ISDN BRI S/T IOA
The #4751 is a 4-port (8-channel) ISDN BRI (basic rate interface) full-size PCI card. Based
on the latest DSP technology, the #4751 allows connections to fax or data modems
connected to the telephone network with analog phone lines, as well as to other IDSN
devices. Each port consists of 2B+D configuration. The #4751 is the “S/T”-bus (4 wire)
version IOA.
• For data mode support, the B-channel supports digital data at 64 Kbps.
• For modem mode support, the B-channel supports V.90 and lesser modulations.
Four 30-foot RJ-45 to RJ-45 network cables are shipped with each card.
The #4751 IOA supports full duplex mode. It supports the PPP, IDLC, and Fax protocols.
This feature requires country certification or homologation.
#4761 Integrated Analog Modem
Based on the latest DSP technology, the #4761 allows the modem function to be integrated
into the IOA and has eight analog modem ports. Eight 30-foot (9.3 m) phone cables are
shipped with each #4761. The #4761 runs these protocols without the need for an external
modem:
• SLIP/PPP uses V.90, so maximum line speed is 56 Kbps
• SDLC uses V.34, so maximum line speed is 33.6 Kbps
• Fax uses V.17 to achieve a 14.4 Kbps maximum line speed
Fax is supported on any or all modem ports and requires an asynchronous line description for
each port used for fax. An asynchronous line description can only be used for Fax. ECS line
not supported. To the iSeries server, the #4761 appears like a single IOA with eight individual
resources available. For configuration purposes, each #4761 counts as eight communications
lines. It supports full duplex.
This feature requires country certification or homologation.
#4801 PCI Crypto Coprocessor
The #4801 is a hardware cryptography solution based on the IBM #4758 card. The #4801 is a
half-length PCI card that offers rich cryptography function, secure storage of cryptographic
keys, and triple DES capability. The level of the cryptographic function is determined by the
Cryptographic Access Provider Licensed Program, which is used to set the key length in the
adapter.
The #4801 is available worldwide.