Fax Detection; Telephone Lines > Audio - Talkswitch CT.TS005.003904 User Manual

3. Select the External IP extension registration interval, which is the interval for registration
messages from IP extensions that are remotely located outside the office. Choices range from
15 seconds to 60 minutes.
4. The default Starting SIP port is 5000. If required, enter a different port ranging from 1024
to 65535.
5. The default Starting RTP port is 4000. If required, enter a different port number ranging from
1024 to 65535.
6. The default HTTP port is 8484. If required, enter a different port number ranging from 1024
to 65535. If your system will use a TalkSwitch 9122i, 9133i or 480i as an external IP
extension, ensure the router maps this port to the TalkSwitch unit acting as local proxy.

Fax Detection

The Fax Detection command allows you to set up detection of Fax Over IP and CNG tones.
1. Choose Troubleshooting > Fax Detection. The Fax Detection window appears.
2. Select the Automatically detect and switch to G.711 for fax over IP check box to have the
TalkSwitch unit detect fax over IP and then switch to G.711.
3. Set the number of CNG tones the TalkSwitch unit must detect before the auto attendant
routes the call to the fax machine. Choices are:
• Detect 1 tone — The auto attendant will route the call to the fax machine if the
TalkSwitch unit detects one CNG tone. Select this if fax calls are not being routed to the
fax machine.
• Detect 2 tones — The auto attendant will route the call to the fax machine if the
TalkSwitch unit detects two CNG tones. Select this if regular calls are being routed to the
fax machine.
Telephone Lines > Audio
The Telephone Lines > Audio command allows you to automatically calibrate the TalkSwitch
unit to match the far end impedance of the telephone lines; to select the matching near end
impedance of the telephone lines; and to select the transmit level to callers.
All controls on this page update the TalkSwitch unit in real time. This allows you to adjust levels
without saving the configuration.
T A L K S W I T C H C O N F I G U R A T I O N 184