173
Appendix J - Internal MMH2834 Composite Link Modem Commands
Call Progress
combinations related to these methods. You can choose to
Selection
have certain responses suppressed, or whether or not you want
speed indications along with the CONNECT responses. You
X
can also pick and choose certain responses in order to match up
with “Standard AT” responses. (Refer to Appendix F for a
summary of Result Codes.)
The MMH2834 provides “Basic” and “Extended” Result Code
sets. The difference between the two is the Basic set provides
one response (CONNECT) to indicate a connection, while the
Extended set provides several responses for different ÿpeeds
(CONNECT, CONNECT 2400, CONNECT 4800, CONNECT
9600, CONNECT 14400 CONNECT 19200, CONNECT 21600,
Etc.).
When the Extended set is chosen, you also have the option of
matching them up with Standard AT 2400 response code sets,
by including or not including the BUSY and/or
NO DIAL TONE responses while excluding the DIAL TONE
response. The X command is used to select which responses
are provided.
Regarding the MMH2834’s method of dialing, the MMH2834 can
detect standard dial tones and busy signals. This capability
(“smart dialing”) allows the modem to wait for a dial tone, and
when one is detected, to begin dialing immediately.
The MMH2834 also can detect a distant busy signal, if after
dialing, it reaches a busy number. This is useful because it
allows the modem to immediately abandon a call, rather than
wait 45 seconds for a carrier signal that will never come.
The MMH2834 gives you a choice between the wait-for-dial-
tone (“smart”) method we just described, and blind (“dumb”)
dialing, where instead of detecting actual dial tones, the modem
relies on timed pauses. When the wait-for-dial-tone method is
chosen, the busy signal detection capability is also activated.
The X command is also used to select which dialing method is
used.
Summary of Contents for MMH900
Page 1: ...MMH900 Series Statistical Multiplexer User Guide...
Page 7: ...Chapter 1 Introduction Description...
Page 26: ...Chapter 2 Configuration...
Page 33: ...Chapter 3 Front Rear Panel Descriptions...
Page 44: ...Chapter 4 Installation...
Page 51: ...Chapter 5 Commands...
Page 89: ...Chapter 6 Operating Procedures...
Page 96: ...Chapter 7 Troubleshooting...
Page 111: ...Chapter 8 Service Warranty Technical Support...
Page 116: ...Appendices...
Page 184: ...Glossary...
Page 193: ...Glossary 193 X Y Z...
Page 200: ...S000315A...