[Asterisk-Users] timing/clock problem

[Alex G Robertson]

I am using only one sync source.

zaptel.conf

# ChannelBank 1
span=1,0,0,esf,b8zs
fxoks=1-24

# ChannelBank 2 (Empty)
span=2,0,0,esf,b8zs
fxoks=25-48

# Empty - Loopback is plugged here!
span=3,0,0,ccs,hdb3,crc4
bchan=49-63,65-79
dchan=64

# Telco1 - Intelig
#span=4,1,0,ccs,hdb3,crc4   -> Funcionou com a PRI Telemar sem Alarmes
span=4,0,0,ccs,hdb3,crc4
bchan=80-94,96-110
dchan=95

# Ambients
fxsks=111-113


And about interruptions it is ok. I'm not sharing it.

Andrew Kohlsmith wrote:
> On March 2, 2005 04:49 pm, Alex G Robertson wrote:
> 
>>When I configure zaptel with no external clock, E1 gets
>>aligned/synchronized with bit rate in 2048000 bps, both me and telco.
>>span=4,0,0,ccs,hdb3,crc4
> 
> 
> What are the other spans connected to, and what are their span= lines?
> 
> 
>>I have another PRI circuit used for data connections from Telco2 and I used
>>it for testing.
>>Telco2 (Telemar) do not send alarms and I sync to then.
> 
> 
> Asterisk cards can only sync to one source per CARD.  So if you have a TE410P 
> in there and you're trying to sync to two telcos, it won't work.  Now 
> granted, the telcos should all be pretty damn solid for timing and using one 
> over the other shouldn't cause frame slips but this is the nature of the 
> Digium multiport T1/E1 cards.  You would need to use two cards (at double the 
> interrupt rate) or try to convince one telco to sync to you.  I'd be 
> surprised if you'll get the latter one to occur.  :-)
> 
> -A.
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-- 
Alex G Robertson
NOC - Microlink