HP Compaq Presario,Presario 1700 Reference Manual page 161

13-8
Government Approvals
3. Only one modem should be connected to a telephone line. Connecting a
modem in parallel with one or more telephone instruments is not allowed.
4. The REN for this piece of equipment is 0.8.
5. The exchange should provide facilities for either loop disconnect (pulse)
dialing or multifrequency (tone) dialing. The modem can be configured to
operate with either system.
6. During dialing, this apparatus may tinkle the bells of other telephones using the
same line. This is not a fault, and we advise you not to call the Fault Repair
Service.
7. The modem specified in this guide is for the Compaq Internet PC.
8. This apparatus has been approved for the following facilities:
Connection to direct exchange lines providing DTMF signaling
Connection to compatible PBXs providing DTMF signaling
Operation in the absence of proceed indication, selectable by user
Call progress monitoring functions
Data modem functions
Auto-dialing functions
Auto-answering functions
Any other usage will invalidate the approval of the apparatus, if as a result, it then
ceases to conform to the standards against which approval was granted.
All apparatus connected to this modem, and thereby connected directly or
indirectly to the British Telecom Public Switched Telephone Network, must be
approved apparatus as defined in Section 22 of the British Telecommunications
Act of 1984.
Although this equipment can use either loop disconnect or DTMF signaling, only
the performance of the DTMF signaling is subject to regulatory requirements for
correct operation. It is therefore strongly recommended that the equipment is set to
use DTMF signaling for access to public or private emergency services. DTMF
signaling also provides faster call set up.
The modem may not be used on extension wiring that makes use of plug pins 1 and
6. If in doubt, advice must be obtained from a competent telecommunications
engineer.