Configuring the negotiation parameters of ISDN layer 3 protocol
Step | Command | Remarks |
---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. | interface interface-type interface-number | N/A |
3. Set the length of the call reference adopted when the ISDN interface initiates a call. | isdn crlength call-reference-length | Optional. The call reference length is 2 bytes for CE1 PRI and CT1 PRI interfaces and 1 byte for BRI interfaces by default. |
4. Configure how the ISDN protocol handles CONNECT ACK messages. | isdn ignore connect-ack [ incoming | outgoing ] | Optional. By default, if the router is communicating with an ISDN switch:
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5. Disable ISDN from carrying the HLC information element in SETUP messages when placing voice calls. | isdn ignore hlc | Optional. By default, HLC information element is carried in SETUP messages when placing voice call. |
6. Disable ISDN from carrying the LLC information element in SETUP messages when placing voice calls. | isdn ignore llc | Optional. By default, LLC information element is carried in SETUP messages when placing voice call. |
7. Configure the ISDN protocol to ignore the processing on the Sending Complete Information Element. | isdn ignore sending-complete [ incoming | outgoing ] | Optional. As for the data exchange performed between a router and an ISDN switch, the default is as follows:
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8. Set the time-out value of an ISDN Layer 3 timer. | isdn l3-timer timer-name time-interval | Optional. The default time-out value of an ISDN L3 timer varies by ISDN protocol type. By default, the DSS1 ISDN L3 timers are set in seconds as follows:
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9. Set the type and code scheme of calling or called numbers in incoming or outgoing ISDN calls. | isdn number-property number-property [ calling | called ] [ in | out ] | Optional. By default, the system selects ISDN number type and code scheme depending on upper layer service. For more information, see Table 1. |
10. Set the called number of ISDN interface to send in overlap mode (in this mode, the digits of each called number will be sent separately and the number of the digits sent each time can be set by the user). | isdn overlap-sending [digits ] | Optional. In full-sending mode, all the digits of each called number will be collected and sent at a time by default. |
Table 1: ISDN number types and code schemes
Protocol | Field (Bit) value | Definition | |||||||
---|---|---|---|---|---|---|---|---|---|
Type | Code scheme | ||||||||
8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | ||
ANSI | 0 | 0 | 0 | User-specified | |||||
0 | 1 | 0 | National network identification | ||||||
0 | 1 | 1 | International network identification | ||||||
0 | 0 | 0 | 0 | Unknown/user-specified | |||||
0 | 0 | 0 | 1 | Carrier identification code | |||||
0 | 0 | 1 | 1 | Data network identification code (ITU-T Recommendation X.121) | |||||
AT&T | 0 | 0 | 0 | Unknown | |||||
0 | 0 | 1 | International number | ||||||
0 | 1 | 0 | National number | ||||||
1 | 0 | 0 | Subscriber number | ||||||
0 | 0 | 0 | 0 | Unknown | |||||
0 | 0 | 0 | 1 | ISDN/telephony numbering loan (Recommendation E.164/E.163) | |||||
1 | 0 | 0 | 1 | Private numbering plan | |||||
DSS1 | 0 | 0 | 0 | Unknown | |||||
0 | 0 | 1 | International number | ||||||
0 | 1 | 0 | National number | ||||||
0 | 1 | 1 | Network specific number | ||||||
1 | 0 | 0 | Subscriber number | ||||||
1 | 1 | 0 | Abbreviated number | ||||||
1 | 1 | 1 | Reserved for extension | ||||||
0 | 0 | 0 | 0 | Unknown | |||||
0 | 0 | 0 | 1 | ISDN/telephony numbering plan (Recommendation E.164) | |||||
0 | 0 | 1 | 1 | Data numbering plan (Recommendation X.121) | |||||
0 | 1 | 0 | 0 | Telex numbering plan (Recommendation F.69) | |||||
1 | 0 | 0 | 0 | National standard numbering plan | |||||
1 | 0 | 0 | 1 | Private numbering plan | |||||
1 | 1 | 1 | 1 | Reserved for extension | |||||
ETSI | 0 | 0 | 0 | Unknown | |||||
0 | 0 | 1 | International number | ||||||
0 | 1 | 0 | National number | ||||||
0 | 1 | 1 | Network specific number | ||||||
1 | 0 | 0 | Subscriber number | ||||||
1 | 1 | 0 | Abbreviated number | ||||||
1 | 1 | 1 | Reserved for extension | ||||||
0 | 0 | 0 | 0 | Unknown | |||||
0 | 0 | 0 | 1 | ISDN/telephony numbering plan (Recommendation E.164) | |||||
0 | 0 | 1 | 1 | Data numbering plan (Recommendation X.121) | |||||
0 | 1 | 0 | 0 | Telex numbering plan (Recommendation F.69) | |||||
1 | 0 | 0 | 0 | National standard numbering plan | |||||
1 | 0 | 0 | 1 | Private numbering plan | |||||
1 | 1 | 1 | 1 | Reserved for extension | |||||
NI | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Unknown number in Unknown numbering plan | |
0 | 0 | 1 | 0 | 0 | 0 | 1 | International number in ISDN numbering plan (Recommendation E.164) | ||
0 | 1 | 0 | 0 | 0 | 0 | 1 | National number in ISDN numbering plan (Recommendation E.164) | ||
0 | 1 | 1 | 1 | 0 | 0 | 1 | Network specific number in private numbering plan | ||
1 | 0 | 0 | 0 | 0 | 0 | 1 | Local (directory) number in ISDN numbering plan (Recommendation E.164) | ||
1 | 1 | 0 | 1 | 0 | 0 | 1 | Abbreviated number in private numbering plan | ||
NTT | 0 | 0 | 0 | Unknown | |||||
0 | 1 | 0 | National number | ||||||
0 | 1 | 1 | Network specific number | ||||||
1 | 0 | 0 | Subscriber number | ||||||
0 | 0 | 0 | 0 | Unknown | |||||
0 | 0 | 0 | 1 | ISDN/telephony numbering plan (Recommendation E.164) | |||||
1 | 0 | 0 | 1 | Private numbering plan | |||||
QSIG | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Unknown number in Unknown numbering plan | |
0 | 0 | 0 | 0 | 0 | 0 | 1 | Unknown number in ISDN/Telephony numbering plan (ITU-T Recommendation E.164/E.163) | ||
0 | 0 | 1 | 0 | 0 | 0 | 1 | International number in ISDN/Telephony numbering plan (ITU-T Recommendation E.164/E.163) | ||
0 | 1 | 0 | 0 | 0 | 0 | 1 | National number in ISDN/Telephony numbering plan (ITU-T Recommendation E.164/E.163) | ||
0 | 1 | 1 | 0 | 0 | 0 | 1 | Subscriber number in ISDN/Telephony numbering plan (ITU-T Recommendation E.164/E.163) | ||
0 | 0 | 0 | 1 | 0 | 0 | 1 | Unknown number in private numbering plan | ||
0 | 0 | 1 | 1 | 0 | 0 | 1 | Level 2 regional number in private numbering plan | ||
0 | 1 | 0 | 1 | 0 | 0 | 1 | Level 1 regional number in private numbering plan | ||
0 | 1 | 1 | 1 | 0 | 0 | 1 | PISN specific number in private numbering plan | ||
1 | 0 | 0 | 1 | 0 | 0 | 1 | Level 0 regional number in private numbering plan |
The undefined bits in all the protocols are reserved for other purposes.