Displaying and maintaining CT1/PRI interfaces ································································································ 28
Configuring an E1-F interface ······································································································································· 28
Configuring an E1-F interface in framed mode ·································································································· 28
Configuring an E1-F interface in unframed mode ····························································································· 29
Configuring other E1-F interface parameters ····································································································· 29
Displaying and maintaining E1-F interfaces ······································································································· 30
Configuring a T1-F interface ········································································································································· 30
Configuration procedure ······································································································································ 31
Starting a BERT test on a T1-F interface ·············································································································· 32
Displaying and maintaining T1-F interfaces ······································································································· 33
Configuring a CE3 interface ········································································································································· 33
Configuring a CE3 interface in E3 mode ··········································································································· 34
Configuring a CE3 interface in CE3 mode ········································································································ 34
Displaying and maintaining CE3 interfaces ······································································································· 36
Configuring a CT3 interface ········································································································································· 36
Configuring a CT3 interface in T3 mode ············································································································ 37
Configuring a CT3 interface in CT3 mode ········································································································· 38
Displaying and maintaining CT3 interfaces ······································································································· 40
Configuring POS interfaces ······································································································································· 42
Overview ········································································································································································· 42
SONET and SDH ··················································································································································· 42
POS ········································································································································································· 42
Feature and hardware compatibility ···························································································································· 42
Configuring a standard POS interface ························································································································ 43
Configuring a POS channel interface ·························································································································· 44
Displaying and maintaining POS interfaces ··············································································································· 45
POS interface configuration example ·························································································································· 45
Network requirements ··········································································································································· 45
Configuration procedure ······································································································································ 45
Verifying the configuration ··································································································································· 46
Troubleshooting POS interfaces ···································································································································· 46
Symptom 1 ····························································································································································· 46
Solution ··································································································································································· 46
Symptom 2 ····························································································································································· 46
Solution ··································································································································································· 46
Symptom 3 ····························································································································································· 47
Solution ··································································································································································· 47
Configuring CPOS interfaces ···································································································································· 48
Overview ········································································································································································· 48
Overhead bytes ····················································································································································· 48
CPOS interface application scenarios ················································································································ 49
Feature and hardware compatibility ···························································································································· 49
CPOS interface configuration task list ························································································································· 50
Configuring the operating mode of an interface card ······························································································· 50
Configuring basic functions of a CPOS interface ······································································································· 50
Configuring an E1 channel ··········································································································································· 51
Configuring a T1 channel ············································································································································· 52
Displaying and maintaining CPOS interfaces ············································································································ 53
CPOS-E1 interface configuration example ·················································································································· 53
Network requirements ··········································································································································· 53
Configuration procedure ······································································································································ 54
Verifying the configuration ··································································································································· 55
Troubleshooting CPOS interfaces ································································································································· 55
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