Which command makes the change?
An administrator is trying to change the default LINECODE for a voice ISDN T1 PRI.
Which command makes the change?
A . linecode ami
B . linecode hdb3
C . linecode b8zs
D . linecode esf
Answer: A
Explanation:
https://www.cisco.com/en/US/docs/ios/dial/configuration/guide/dia_cfg_isdn_pri_external_docbase_0900e4b1806c752c_4container_external_docbase_0900e4b18216dd1b.html
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The DEFAULT line code is AMI as per https://www.cisco.com/c/en/us/td/docs/ios/voice/cminterop/configuration/guide/12_4t/vc_12_4t_book/vc_mgcp_t1cas.html
so to change the correct answer is C. b8zs