AT&T Definity 8510T Manual de usuario descargar pdf (Pagina 70)

Data Options and Profiles

packet switched data service for Mode DX25 and ISDN B-channel circuit

switched data service for the other Modes).

B2 An abbreviation for B-channel Mode 2, configures the ADM for

establishment of outgoing data calls using AT&T’s Mode 2 circuit switched

data transmission protocol. B2 and BA are appropriate selections for

circuit switched connections over 64 kbps facilities to endpoints supporting

one or both of these protocols. Mode 2 protocol is not error corrected and

does not provide bidirectional flow control when endpoint speeds are

mismatched. Mode 2 does provide less delay than Mode 3 on transmitted

and received data. Select B2 to establish a data call using Mode 2

protocol. If the user escapes to Local Mode while the far end is

transmitting Mode 2 data, this data may be lost.

BA An abbreviation for B-channel Adaptive, configures the ADM for

establishment of outgoing data calls using AT&T’s Mode 3/2 adaptive

circuit switched data transmission protocol. B2 and BA are appropriate

selections for circuit switched connections over 64 kbps facilities to

endpoints supporting one or both of these protocols. Mode 3 protocol is

error corrected and does provide bidirectional flow control when endpoint

speeds are mismatched. Mode 3 can cause slightly higher delays than

Mode 2 on transmitted and received data. Mode 3 is a packet-oriented

protocol and uses the Packet Assembler Disassembler (PAD) data

options. Select BA to attempt to establish a data call using AT&T Mode 3

protocol. If the endpoint you are calling cannot accept this type of call, the

ADM then reattempts using AT&T Mode 2 protocol.

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AT&T Definity 8510T Manual de usuario Pagina 70