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Technical reference
Default numbers
9: ISDN trunk access code (can be modified
Page 44).
0: VoIP trunk access code (can be modified
Page 44).
18 and 19: Internal numbers for analog telephones.
20 to 49: Internal numbers for BizIP 410 telephones.
50 to 69: ISDN group call numbers (cannot be dialed internally).
70 to 79: VoIP group call numbers (cannot be dialed internally).
99: Remote access to the group answer machine.
IP addresses of time servers (SNTP)
Physikalisch-Technische Bundesanstalt (ptbtime1.ptb.de): 192.53.103.103
NIST (time.nist.gov): 192.43.244.18
NASA (ns.arc.nasa.gov): 128.102.16.2
133
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