Lucent Technologies INDeX 20AT User Manual page 5

20AT Approvals
38DHB0002UKDU - Issue 1 February 2000
The apparatus is approved for connection to the PSTN or
suitable PBX supporting DTMF signalling.
The 20AT has been approved for use of the following
facilities:
– DTMF signalling.
– Mute.
– Dual level receive volume control.
Any other usage will invalidate the approval of the
apparatus if as a result it then ceases to comply with the
standards against which the approval was granted.
This apparatus is capable of 999/112 calls to the
emergency services.
20AT Approvals – Page 5
INDeX 20AT Telephone User's Guide