66
Protocol
Field (Bit) value
Definition
Type Code scheme
8 7 6 5 4 3 2 1
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.
Configuring the ISDN Q.931 protocol version
The ISDN Q.931 protocol has multiple versions. By default, Q.931 (1998) runs on your device.
However, some devices in the network might run Q.931 (1988). For interoperation with such a device,
you can configure the connecting interface to run Q.931 (1988).
To enable Q.931 (1988) on an interface:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type interface-number
N/A
3. Enable Q.931 (1988)
on the interface.
isdn q931-traditional
By default, an interface runs
Q.931 (1998).
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