[Asterisk-Users] Autio cut off at beginning of call

[Reid Forrest]

> 
> Check the load on your server(s). 
> 

Load average is always at or near 0. This is on a dedicated machine doing
nothing but routing calls. No voicemail, music on hold, etc.

I noticed something in a packet capture that may or may not be significant.
When I place a call, the capture shows about 3 seconds of audio data before
the IAX ANSWER packet. Could this be a symptom of the problem?

Below is a packet dump if an outbound IAX call made from a Zaptel FXS
channel.

No.     Time        Source                Destination           Protocol Info
      9 11.987842   asterisk           66.234.228.170        IAX2     IAX,
source call# 4, timestamp 3ms REGREQ
     11 12.086365   66.234.228.170        asterisk           IAX2     IAX,
source call# 356, timestamp 4ms REGACK
     12 12.086456   asterisk           66.234.228.170        IAX2     IAX,
source call# 4, timestamp 4ms ACK
     13 12.158422   asterisk           66.234.228.160        IAX2     IAX,
source call# 6, timestamp 14ms NEW
     14 12.258421   66.234.228.160        asterisk           IAX2     IAX,
source call# 228, timestamp 10ms AUTHREQ
     15 12.258514   asterisk           66.234.228.160        IAX2     IAX,
source call# 6, timestamp 114ms AUTHREP
     16 12.383395   66.234.228.160        asterisk           IAX2     IAX,
source call# 228, timestamp 109ms ACCEPT
     17 12.383552   asterisk           66.234.228.160        IAX2     IAX,
source call# 6, timestamp 109ms ACK
     18 12.397652   asterisk           66.234.228.160        IAX2     Voice,
source call# 6, timestamp 253ms, Raw mu-law data (G.711)
     19 12.417636   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 273ms, Raw mu-law data (G.711)
     20 12.437635   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 293ms, Raw mu-law data (G.711)
     21 12.457634   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 313ms, Raw mu-law data (G.711)
     22 12.477634   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 333ms, Raw mu-law data (G.711)
     23 12.497634   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 353ms, Raw mu-law data (G.711)
     24 12.498398   66.234.228.160        asterisk           IAX2     IAX,
source call# 228, timestamp 253ms ACK
     25 12.515119   66.234.228.160        asterisk           IAX2
Control, source call# 228, timestamp 112ms stop sounds
     26 12.515161   asterisk           66.234.228.160        IAX2     IAX,
source call# 6, timestamp 112ms ACK
     27 12.517701   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 373ms, Raw mu-law data (G.711)
     28 12.537634   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 393ms, Raw mu-law data (G.711)
     29 12.557634   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 413ms, Raw mu-law data (G.711)
     30 12.565685   66.234.228.160        asterisk           IAX2
Control, source call# 228, timestamp 115ms unknown (0x0e)
     31 12.565732   asterisk           66.234.228.160        IAX2     IAX,
source call# 6, timestamp 115ms ACK
     32 12.577636   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 433ms, Raw mu-law data (G.711)
     33 12.585428   66.234.228.160        asterisk           IAX2     Voice,
source call# 228, timestamp 20ms, Raw mu-law data (G.711)
     34 12.585505   asterisk           66.234.228.160        IAX2     IAX,
source call# 6, timestamp 20ms ACK
     35 12.597633   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 453ms, Raw mu-law data (G.711)
     36 12.606341   66.234.228.160        asterisk           IAX2     Mini
packet, source call# 228, timestamp 40ms, Raw mu-law data (G.711)
     37 12.617633   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 473ms, Raw mu-law data (G.711)
	.
	.
	. Nothing of interest in here, just audio data
	.	
	.
    327 15.477620   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 3333ms, Raw mu-law data (G.711)
    328 15.486797   66.234.228.160        asterisk           IAX2     Mini
packet, source call# 228, timestamp 2920ms, Raw mu-law data (G.711)
--->329 15.487713   66.234.228.160        asterisk           IAX2
Control, source call# 228, timestamp 2923ms ANSWER
    330 15.487734   asterisk           66.234.228.160        IAX2     IAX,
source call# 6, timestamp 2923ms ACK
    331 15.497627   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 3353ms, Raw mu-law data (G.711)
    332 15.517623   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 3373ms, Raw mu-law data (G.711)
    333 15.537620   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 3393ms, Raw mu-law data (G.711)
    334 15.557619   asterisk           66.234.228.160        IAX2     Mini
packet, source call# 6, timestamp 3413ms, Raw mu-law data (G.711)