[Asterisk-Users] long delay between "Ring Begin" and "SIP/XXX is ringing"

[lartc]

hi all,

i have an asterisk install with a digium 4 port fxo card and cisco 7960
sip phones -- running on a compaq Pentium III (Coppermine) at 800Mhz
256KB cache and 1GB of ram.

when a call comes in on zap/1-1 for example, the delay between when zap
sees the line going to ring state, and when the desktop telephone rings
can be as long as 7000 milliseconds (or about 3 or 4 rings on an ear
piece).

below is some of the log -- note 2 seconds to get from Ring Begin to In
Use and a total of 7 seconds before the sip phone rings.

anyway to speed this process up? 

cheers

charles

Apr  5 16:15:00 DEBUG[7010]: chan_zap.c:6639 do_monitor: Monitor
doohicky got event Ring Begin on channel 1
Apr  5 16:15:02 DEBUG[7010]: chan_zap.c:6639 do_monitor: Monitor
doohicky got event Ring/Answered on channel 1
Apr  5 16:15:02 DEBUG[6986]: devicestate.c:187 do_state_change: Changing
state for Zap/1 - state 2 (In use)
Apr  5 16:15:02 DEBUG[7549]: app_queue.c:471 changethread: Device
'Zap/1' changed to state '2' (In use)
    -- Starting simple switch on 'Zap/1-1'
Apr  5 16:15:05 NOTICE[7548]: chan_zap.c:6063 ss_thread: Got event 18
(Ring Begin)...
<snip>
Apr  5 16:15:07 DEBUG[7012]: chan_sip.c:1447 __sip_semi_ack:
(Provisional) Stopping retransmission (but retaining packet) on
'7c062ef214528d5973dcbe320c3800a1 at 172.16.7.3' Request 102: Found
    -- SIP/101-7014 is ringing

-- 
"simplified chinese" is not nearly as easy as they would
have you believe ... a superlative oxymoron" --anonymous