Conference Problem

Asterisk Asterisk Support
1

I am using a Xeon server as an asterisk server (asterisk 1.2.4) and moreover the SIP phone is Grand Stream BOX with codec as Alaw
And calling through IAX trunks with codec as GSM

2

What problem are you experiencing?

TheLostPacket

3

i am facing problem of low voice at the time of conf. and i am using ztdummy.

4

I am using a Zaptel FXO card as a timing device. Is there any advantages to using ztdummy?

Thanks,
Isaac