Planet Technology VIP-2100 - Manual (Page 138)

VIP-2100 User ’s manual - 133 -
Q5. VIP-2100 cannot make a success call.
Answer:
a. Check PSTN trunk ready to work or not. You need to have the
following event generated - “9504: trunk alarm clear (trunk #)”
b. Check VIP-2100 is registered to H.323: Gatekeeper /SIP: Register
Server or not. You need to have the following event generated -
“9503:
H323 GK/ SIP Register [xxx.xxx.xxx.xxx] found & registered
”
c. Check the digit manipulation setting is correct or not. Make sure you
have DM put into call flow editor, interface or VoIP.
d. For P2P call, make sure you have the address book setting for dialed
number.
Q6. Cannot hear voice after the calls connect.
Answer:
a. Make sure the interface and host Ethernet are well connected.
b. Ping each related IP to see network is working or not.
c. The voice codec priority should be matched both side.
Q7. In H.323 Mode: Failed to setup a fast start call.
Answer:
a. Make sure the far end
“Fast Start” is enabled.
b. Check weather Gatekeeper can support Fast Start or not. (Some
Gatekeepers are not.)
c. If you cannot hear early announcement, make sure the far and H.323
end point can listen RTP port before connect.
Q8. In SIP Mode: Failed to setup a normal call.
Answer:
a. Make sure the voice codec priority should be matched both side.
b. Make sure the VIP-2100 accept proxy call only or not.
Q9. In SIP Mode: Failed to hear the early media before call connected.
Answer:
a. Make sure the 180 SDP or 183 SDP are enabled.
b. Make sure the remote SIP end point can cut through voice before call
connected.
Q10. Cannot send or receive the DTMF to/from far end VoIP end point.
Answer:
a. In H.323 Mode: Make sure VIP-2100 and other endpoint use same
DTMF relay mode (e.g. H.245 Alphanumeric.)
b. In SIP Mode: Make sure VIP-2100 and other endpoint use same
DTMF relay mode (e.g. SIP Info or RFC2833-payload type.)
c. In SIP Mode: Make sure the remote SIP end point ’s RTP payload type
is supported or not.
d. If use Q.931 UUI DTMF Relay mode, make sure Gatekeeper can
correctly forward Q.931 UUI when registering to Gatekeeper is set to
true.