參數(shù)資料
型號(hào)： CMX218
英文描述： ISDN Data and Telephony-Protocol Engine???
中文描述： ISDN數(shù)據(jù)和語音通信協(xié)議引擎？？？
文件頁(yè)數(shù)： 23/34頁(yè)
文件大小： 353K
代理商： CMX218
ISDN Data and Telephony Protocol Engine (no X.25)
CMX218
1999
Consumer Microcircuits Limited
1999
Chiron Technology Limited
23
D/218/1
1.5.6.2.2 Basic Configuration Parameters
!C4 (B1 Channel Mapping)
Enables data calls to be made and accepted on the B1-channel. If !C5 is set to 0 the outgoing call
SETUP message will contain a Channel Identification Information Element set to B1-channel only.
Value
0
Description
Incoming data calls on the B1-channel are rejected with ‘channel not
acceptable’ as the cause.
Incoming data calls on the B1-channel are accepted provided no other
data call is present.
4 (default)
!C5 (B2 Channel Mapping)
Enables data calls to be made and accepted on the B2-channel. If !C4 is set to 0 the outgoing call
SETUP message will contain a Channel Identification Information Element set to B2-channel only.
Value
0
Description
Incoming data calls on the B2-channel are rejected with ‘channel not
acceptable’ as the cause.
Incoming data calls on the B2-channel are accepted provided no other
data call is present.
4 (default)
Note:
If both !C4 and !C5 =0 no data calls will be made or received.
!C6 (MSN Directory Number)
Also refer to ISDN MSN (section 1.5.3.5).
If there is a number saved in this register upon receipt of an incoming data call, the CMX218 will check
for the presence of a Called Party Number Information Element. If present it will compare the number
with that saved in the !C6 register. If they match, the call will be accepted, ie a ‘RING’ indication (RI
pin is raised, then lowered after 3s) is returned to the DTE. If the Called Party Number Information
Element and saved MSN do not match, the call is ignored. The command is entered as follows:
AT!C6=“nnnn”<CR>
if no digits are present within the quotes, the MSN is cleared.
Up to 23 digits may be entered.
!C7 (TEI selection)
Selects the fixed or negotiated TEI used on the ISDN link. Note that the value of !C7 only takes effect
when the ISDN interface goes from de-activated to activated.
Value
0-63
64 (default)
Description
Fixed TEI, 0 to 63.
Negotiated TEI.
!C8 (ISDN Line Failure Detection enable/disable)
Enables or disables Line Failure Detection. (Refer to section 1.5.3.3).
Value
0
1 (default)
Description
Line Failure Detection disabled.
Line Failure Detection enabled.
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