Talkaphone VOIP-8 VoIP Interface (8 channels) - Manual (Page 43)

VOICE OVER IP INTERFACE
Installation and Operation Manual
43
Appendix B:
Frequently Asked Questions
How far can a phone be from the VOIP-1-2-4-8?
The VoIP Interface units work with 1000 ft. (24AWG) twisted pair copper wire.
Does the VOIP-1-2-4-8 provide power to the phone?
Yes, all of the VoIP Interface units provide power to the Emergency Phones.
My VOIP-1-2-4-8 is taking a long time to boot up. Is this normal?
Yes, the VOIP-1-2-4-8 units typically take about one minute to complete a cold boot.
How do I install a VOIP-1-2-4-8 behind a firewall or Proxy Server?
Your firewall or proxy server will need to support either H.323 or SIP. You may also open up the
ports listed below.
H.323 protocol uses:
UDP:
5000-5075, 16000-20000
TCP: 1720, 16000-20000
Q.931: 900-916
SIP protocol uses:
UDP: 5000-5300
SPP protocol uses:
UDP: 10000 (or the port number specified in the outbound phone book entries)
NOTE: Opening up firewall ports can make your network vulnerable to an attack. Please consult with
your network administrator before carrying out any firewall configuration changes.