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Configuring HDLC ······················································································································································ 96
Overview ········································································································································································· 96
Command and hardware compatibility ······················································································································ 96
Enabling HDLC encapsulation on an interface ··········································································································· 96
Configuring link status polling ······································································································································ 97
Displaying and maintaining HDLC ······························································································································· 97
HDLC configuration example ········································································································································ 98
Network requirements ··········································································································································· 98
Configuration procedure ······································································································································ 98
Verifying the configuration ··································································································································· 98
Configuring HDLC link bundling ···························································································································· 100
Overview ······································································································································································· 100
Basic concepts ····················································································································································· 100
States of member interfaces ······························································································································· 101
Load balancing modes ······································································································································· 102
Command and hardware compatibility ···················································································································· 102
Configuring an HDLC link bundle interface ·············································································································· 103
Configuration restrictions and guidelines ········································································································· 103
Configuration procedure ···································································································································· 103
Assigning an interface to an HDLC link bundle ········································································································ 105
Configuration restrictions and guidelines ········································································································· 105
Configuration procedure ···································································································································· 105
Displaying and maintaining HDLC link bundling ····································································································· 106
HDLC link bundling configuration example ·············································································································· 106
Network requirements ········································································································································· 106
Configuration procedure ···································································································································· 107
Verifying the configuration ································································································································· 107
Configuring ISDN ··················································································································································· 109
Overview ······································································································································································· 109
ISDN interfaces ···················································································································································· 109
ISDN protocol stacks ··········································································································································· 110
ISDN application scenarios································································································································ 110
Feature and hardware compatibility ·························································································································· 111
ISDN PRI configuration prerequisites ························································································································· 111
ISDN configuration task list ········································································································································· 111
Setting the ISDN switch type on an ISDN interface ································································································· 112
Setting the ISDN functionality of an ISDN interface ································································································· 113
Configuring SPID parameters for the NI switch type ······························································································· 114
Configuring SPID assignment ····························································································································· 114
Configuring the TSPID timer and INFORMATION retransmission ································································· 115
Enabling NIT mode for NI-type switches incapable of SPID negotiation ······················································ 115
Configuring Q.931 negotiation parameters ············································································································· 116
Configuring Q.931 call control parameters ············································································································· 118
Configuring B-channel selection ························································································································ 118
Configuring calling number verification for incoming calls ············································································ 118
Configuring called-number verification for incoming calls ············································································· 119
Configuring ISDN calling number identification ······························································································ 119
Configuring the Q.921 operating parameters ········································································································· 120
Configuring the data link type of a BRI interface ····························································································· 120
Configuring per-channel TEI assignment on a BRI interface ··········································································· 120
Enabling permanent Q.921 link connectivity on an ISDN BRI interface ······················································ 121
Enabling persistent Layer 1 activation on a BRI interface ··············································································· 121
Configuring a BRI interface to supply line power ···························································································· 122
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