System information

APPENDIX H. TROUBLESHOOTING VOIP H-7
When I am on a call, and I get a 2nd call, my phone’s second line does not ring, I
just hear the call waiting beep.
At this time, multiple line appearances on SIP stations are not supported.
I do not see Caller ID while I am on a call (CIDCW) on my SIP phone.
At this time, CIDCW is not supported.
I am using a SIP device from a home/remote office (behind a local NAT or router)
that is outside of my corporate LAN. How do I configure the phone?
See Chapter 14 in Administering TeleVantage for information on how to configure a SIP end
point behind a NAT or firewall.
Using my SIP device, I hear audio in only one direction (1-way audio.)
Check to see if the phone or TeleVantage Server is behind a NAT/firewall. If so, see Chapter 14
in Administering TeleVantage for information on how to configure a SIP end point behind a
NAT or firewall.
TeleVantage is not detecting DTMF digits that I press on my SIP device.
Verify that the SIP phone and TeleVantage SIP span are both configured to send digits via
RFC2833 and not in-band or SIP INFO.
Note:
If you are using a DMIP241-1T1-P10 board, then you must set the phone to send DTMF
digits “In Band”. You can leave DTMF transmission mode of SIP span set to RFC2833, as
TeleVantage will user use “in-band” with these boards.
Troubleshooting problems with SIP PSTN gateways or SIP
Carriers
I am receiving a busy signal when trying to make outbound calls to a SIP
provider.
Check the following:
1. You created a TeleVantage SIP span.
2. You created a TeleVantage SIP Server for the SIP provider as specified in Chapter 14
in Administering TeleVantage.
3. You configured your TeleVantage SIP account correctly.