Re: [Asterisk-Users] Zaptel T1 Timing Source
On Wed, 9 Nov 2005, Kevin Bockman wrote: > Waldo Rubinstein wrote: > > One T1 is with one carrier, who provides timing signal. > > > > The other 3 T1s are from a different carrier, all sharing the same > > timing signal. > > > > Based on this, I have in /etc/zaptel.conf something like: I expect that you'll find that the two carriers are actually in clock sync anyway. Steve ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Rich Adamson wrote: Yes, but the problem is, I think from a T1 theoretical perspective, that because the T1s are from different providers, their timings may be different. I would assume that I need to be able specify a timing source per provider. Correct? No, all real telco's will sync against a higher level clock, so "they" are already in sync. You only need to pick "one" that you sync from; all others become alternates should the primary source fail. Public telephone exchanges normally contain an atomic (rhubidium) clock. The clock in a T1 or E1 from a telco is, therefore, extremely accurate. Even if two telcos in different parts of the world don't sync together (some do, and some don't) their clocks are still, essentially, in sync. This also means that if you derive all your VoIP timing from a public E1 or T1 clock, and a box the other side of the world does the same, the VoIP packets exchanged between them should show no noticable timing shifts. :-) Steve ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
> Yes, but the problem is, I think from a T1 theoretical perspective, > that because the T1s are from different providers, their timings may > be different. I would assume that I need to be able specify a timing > source per provider. Correct? No, all real telco's will sync against a higher level clock, so "they" are already in sync. You only need to pick "one" that you sync from; all others become alternates should the primary source fail. ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Thanks. I now understand it from everyone's comments. - Waldo On Nov 9, 2005, at 2:00 PM, Bart Fisher wrote: I don't understand your question - so I'll tell you what to do: Select one timing source from one T1 that is a Telco connected T1 and make it 1 - example: most reliable T1 Source. If there is two Telco connected T1, select it as source 2 Now if timing source 1 goes down, timing source 2 will take over. Bart - Original Message - From: "Waldo Rubinstein" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" Sent: Wednesday, November 09, 2005 10:06 AM Subject: Re: [Asterisk-Users] Zaptel T1 Timing Source These are REAL Telco T1s and not connected to a PBX. Am I to assume that even if they are different providers the timing should be the same? That doesn't make a lot of sense to me. Thanks, Waldo On Nov 9, 2005, at 12:34 PM, Bart Fisher wrote: My understanding there should only be one timing source per TE410. You should use a "REAL" Telco T1 for a timing source. - Otherwise, do not choose any if for example all PBX T1's installed. The settings is only a priority level for asterisk to obtain the source. Example: 1 = use this source first choice, 2 = use this source if source 1 is down, and so on.. Bart - Original Message - From: "Waldo Rubinstein" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" Sent: Wednesday, November 09, 2005 9:12 AM Subject: [Asterisk-Users] Zaptel T1 Timing Source Hi guys, I have a question about the timing source parameter in zaptel.conf. I have 4 T1s coming into a TE410P. One T1 is with one carrier, who provides timing signal. The other 3 T1s are from a different carrier, all sharing the same timing signal. Based on this, I have in /etc/zaptel.conf something like: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 What I have done is set the timing source of the first T1 to be the primary source for itself. For the other three T1s, I set the second T1 to be the primary source for the group of 3 and the other two as secondary sources. Is this correct? The reason I ask is because every so often I hear people complaint about call drops. It doesn't happen to everyone, so I don't know if it has anything to do with time source selection and synchronization issues that may be affecting individual channels. After a report of a call drop, I check dmesg and I don't really see any errors. Sometimes I just see ... disable echo cancel... messages on specific channels, but that shouldn't be a reason to drop a call. Am I right? Any ideas? Thanks, Waldo ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Waldo Rubinstein wrote: Yes, but the problem is, I think from a T1 theoretical perspective, that because the T1s are from different providers, their timings may be different. I would assume that I need to be able specify a timing source per provider. Correct? The dual and quad span Digium T1 cards cannot support that mode; all the transmit clocks are slaved to a single source, which can either be the onboard clock or one of the span receive clocks. This will likely work just fine for you if your providers' clocks run at the same frequency (as they should) but are not in sync with each other; if there is a frequency difference between them then you could have frame slips. ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Thanks. Got it. - Waldo On Nov 9, 2005, at 1:13 PM, Don Pobanz wrote: Waldo Rubinstein wrote: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 You are misunderstanding the span provisioning. There is ONE clock in the TE410P card. This clock can either free run or get it's timing (sync) from one of the T1's. If the specified T1 is not available it can be told to look at a second t1 or third or fourth. If span 1 is the carrier with the timing source, try setting it up like this. span=1,1,0,esf,b8zs e&m=1-24 span=2,2,0,esf,b8zs e&m=25-48 span=3,3,0,esf,b8zs e&m=49-72 span=4,4,0,esf,b8zs e&m=73-96 This says use the timing from span 1 if span 1 is up, span 2 if span 1 is down, span 3 if span 1 & 2 are down, span 4 if spans 1,2,3 are down. Don Pobanz ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Waldo Rubinstein wrote: These are REAL Telco T1s and not connected to a PBX. Am I to assume that even if they are different providers the timing should be the same? That doesn't make a lot of sense to me. In general even different providers should have the 'same' timing. Each telco should be able to trace their timing back to a stratum 1 clock (very accurate clock). Two stratum 1 clocks will look like they are timed together even if they aren't. If the telcos can trace their timing back to a stratum one clock, you won't have any timing problems with them. Don Pobanz Ps. When I first started work at the local telco in the late 80s, we derived our timing from one long distance carrier and used this same timing for all carriers and customers. ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
I don't understand your question - so I'll tell you what to do: Select one timing source from one T1 that is a Telco connected T1 and make it 1 - example: most reliable T1 Source. If there is two Telco connected T1, select it as source 2 Now if timing source 1 goes down, timing source 2 will take over. Bart - Original Message - From: "Waldo Rubinstein" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" Sent: Wednesday, November 09, 2005 10:06 AM Subject: Re: [Asterisk-Users] Zaptel T1 Timing Source These are REAL Telco T1s and not connected to a PBX. Am I to assume that even if they are different providers the timing should be the same? That doesn't make a lot of sense to me. Thanks, Waldo On Nov 9, 2005, at 12:34 PM, Bart Fisher wrote: My understanding there should only be one timing source per TE410. You should use a "REAL" Telco T1 for a timing source. - Otherwise, do not choose any if for example all PBX T1's installed. The settings is only a priority level for asterisk to obtain the source. Example: 1 = use this source first choice, 2 = use this source if source 1 is down, and so on.. Bart - Original Message - From: "Waldo Rubinstein" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" Sent: Wednesday, November 09, 2005 9:12 AM Subject: [Asterisk-Users] Zaptel T1 Timing Source Hi guys, I have a question about the timing source parameter in zaptel.conf. I have 4 T1s coming into a TE410P. One T1 is with one carrier, who provides timing signal. The other 3 T1s are from a different carrier, all sharing the same timing signal. Based on this, I have in /etc/zaptel.conf something like: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 What I have done is set the timing source of the first T1 to be the primary source for itself. For the other three T1s, I set the second T1 to be the primary source for the group of 3 and the other two as secondary sources. Is this correct? The reason I ask is because every so often I hear people complaint about call drops. It doesn't happen to everyone, so I don't know if it has anything to do with time source selection and synchronization issues that may be affecting individual channels. After a report of a call drop, I check dmesg and I don't really see any errors. Sometimes I just see ... disable echo cancel... messages on specific channels, but that shouldn't be a reason to drop a call. Am I right? Any ideas? Thanks, Waldo ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Circuit timing is only to let the hardware know how to keep in sync with framing and what it is supposed to be. T1 timing will always be the same, so syncing your card to any of them will be fine. Syncing to 2 - 1 as backup would be best, etc.. Timing has nothing to do with the remote end - it remains local. If you have your own stratum source, you could use it instead of "line". -Greg On Wed, 2005-11-09 at 13:06 -0500, Waldo Rubinstein wrote: > These are REAL Telco T1s and not connected to a PBX. Am I to assume > that even if they are different providers the timing should be the > same? That doesn't make a lot of sense to me. > > Thanks, > Waldo > > On Nov 9, 2005, at 12:34 PM, Bart Fisher wrote: > > > My understanding there should only be one timing source per TE410. > > You should use a "REAL" Telco T1 for a timing source. - Otherwise, > > do not choose any if for example all PBX T1's installed. The > > settings is only a priority level for asterisk to obtain the > > source. Example: 1 = use this source first choice, 2 = use this > > source if source 1 is down, and so on.. > > > > Bart > > > > > > - Original Message - From: "Waldo Rubinstein" > > <[EMAIL PROTECTED]> > > To: "Asterisk Users Mailing List - Non-Commercial Discussion" > > > > Sent: Wednesday, November 09, 2005 9:12 AM > > Subject: [Asterisk-Users] Zaptel T1 Timing Source > > > > > >> Hi guys, > >> > >> I have a question about the timing source parameter in zaptel.conf. > >> > >> I have 4 T1s coming into a TE410P. > >> > >> One T1 is with one carrier, who provides timing signal. > >> > >> The other 3 T1s are from a different carrier, all sharing the > >> same timing signal. > >> > >> Based on this, I have in /etc/zaptel.conf something like: > >> > >> > >> span=1,1,0,esf,b8zs > >> e&m=1-24 > >> > >> span=2,1,0,esf,b8zs > >> e&m=25-48 > >> > >> span=3,2,0,esf,b8zs > >> e&m=49-72 > >> > >> span=4,2,0,esf,b8zs > >> e&m=73-96 > >> > >> What I have done is set the timing source of the first T1 to be > >> the primary source for itself. > >> > >> For the other three T1s, I set the second T1 to be the primary > >> source for the group of 3 and the other two as secondary sources. > >> > >> Is this correct? > >> > >> The reason I ask is because every so often I hear people > >> complaint about call drops. It doesn't happen to everyone, so I > >> don't know if it has anything to do with time source selection > >> and synchronization issues that may be affecting individual > >> channels. After a report of a call drop, I check dmesg and I > >> don't really see any errors. Sometimes I just see ... disable > >> echo cancel... messages on specific channels, but that shouldn't > >> be a reason to drop a call. > >> > >> Am I right? Any ideas? > >> > >> Thanks, > >> Waldo > >> ___ > >> --Bandwidth and Colocation sponsored by Easynews.com -- > >> > >> Asterisk-Users mailing list > >> Asterisk-Users@lists.digium.com > >> http://lists.digium.com/mailman/listinfo/asterisk-users > >> To UNSUBSCRIBE or update options visit: > >> http://lists.digium.com/mailman/listinfo/asterisk-users > >> > > > > ___ > > --Bandwidth and Colocation sponsored by Easynews.com -- > > > > Asterisk-Users mailing list > > Asterisk-Users@lists.digium.com > > http://lists.digium.com/mailman/listinfo/asterisk-users > > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > > ___ > --Bandwidth and Colocation sponsored by Easynews.com -- > > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: >http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Waldo Rubinstein wrote: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 You are misunderstanding the span provisioning. There is ONE clock in the TE410P card. This clock can either free run or get it's timing (sync) from one of the T1's. If the specified T1 is not available it can be told to look at a second t1 or third or fourth. If span 1 is the carrier with the timing source, try setting it up like this. span=1,1,0,esf,b8zs e&m=1-24 span=2,2,0,esf,b8zs e&m=25-48 span=3,3,0,esf,b8zs e&m=49-72 span=4,4,0,esf,b8zs e&m=73-96 This says use the timing from span 1 if span 1 is up, span 2 if span 1 is down, span 3 if span 1 & 2 are down, span 4 if spans 1,2,3 are down. Don Pobanz ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
These are REAL Telco T1s and not connected to a PBX. Am I to assume that even if they are different providers the timing should be the same? That doesn't make a lot of sense to me. Thanks, Waldo On Nov 9, 2005, at 12:34 PM, Bart Fisher wrote: My understanding there should only be one timing source per TE410. You should use a "REAL" Telco T1 for a timing source. - Otherwise, do not choose any if for example all PBX T1's installed. The settings is only a priority level for asterisk to obtain the source. Example: 1 = use this source first choice, 2 = use this source if source 1 is down, and so on.. Bart - Original Message - From: "Waldo Rubinstein" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" Sent: Wednesday, November 09, 2005 9:12 AM Subject: [Asterisk-Users] Zaptel T1 Timing Source Hi guys, I have a question about the timing source parameter in zaptel.conf. I have 4 T1s coming into a TE410P. One T1 is with one carrier, who provides timing signal. The other 3 T1s are from a different carrier, all sharing the same timing signal. Based on this, I have in /etc/zaptel.conf something like: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 What I have done is set the timing source of the first T1 to be the primary source for itself. For the other three T1s, I set the second T1 to be the primary source for the group of 3 and the other two as secondary sources. Is this correct? The reason I ask is because every so often I hear people complaint about call drops. It doesn't happen to everyone, so I don't know if it has anything to do with time source selection and synchronization issues that may be affecting individual channels. After a report of a call drop, I check dmesg and I don't really see any errors. Sometimes I just see ... disable echo cancel... messages on specific channels, but that shouldn't be a reason to drop a call. Am I right? Any ideas? Thanks, Waldo ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Yes, but the problem is, I think from a T1 theoretical perspective, that because the T1s are from different providers, their timings may be different. I would assume that I need to be able specify a timing source per provider. Correct? Thanks, Waldo On Nov 9, 2005, at 12:30 PM, Kevin Bockman wrote: Waldo Rubinstein wrote: One T1 is with one carrier, who provides timing signal. The other 3 T1s are from a different carrier, all sharing the same timing signal. Based on this, I have in /etc/zaptel.conf something like: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 I don't think there is such a thing as 'timing groups' like you are thinking about. The primary option for timing is 1, and secondary is 2, third is 3, etc. If 1 is down, it goes 2 to, etc. I'm just learning myself, but I'm pretty sure it should be: span=1,1,0,esf,b8zs e&m=1-24 span=2,2,0,esf,b8zs e&m=25-48 span=3,3,0,esf,b8zs e&m=49-72 span=4,4,0,esf,b8zs e&m=73-96 Kevin ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
My understanding there should only be one timing source per TE410. You should use a "REAL" Telco T1 for a timing source. - Otherwise, do not choose any if for example all PBX T1's installed. The settings is only a priority level for asterisk to obtain the source. Example: 1 = use this source first choice, 2 = use this source if source 1 is down, and so on.. Bart - Original Message - From: "Waldo Rubinstein" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" Sent: Wednesday, November 09, 2005 9:12 AM Subject: [Asterisk-Users] Zaptel T1 Timing Source Hi guys, I have a question about the timing source parameter in zaptel.conf. I have 4 T1s coming into a TE410P. One T1 is with one carrier, who provides timing signal. The other 3 T1s are from a different carrier, all sharing the same timing signal. Based on this, I have in /etc/zaptel.conf something like: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 What I have done is set the timing source of the first T1 to be the primary source for itself. For the other three T1s, I set the second T1 to be the primary source for the group of 3 and the other two as secondary sources. Is this correct? The reason I ask is because every so often I hear people complaint about call drops. It doesn't happen to everyone, so I don't know if it has anything to do with time source selection and synchronization issues that may be affecting individual channels. After a report of a call drop, I check dmesg and I don't really see any errors. Sometimes I just see ... disable echo cancel... messages on specific channels, but that shouldn't be a reason to drop a call. Am I right? Any ideas? Thanks, Waldo ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Zaptel T1 Timing Source
Waldo Rubinstein wrote: One T1 is with one carrier, who provides timing signal. The other 3 T1s are from a different carrier, all sharing the same timing signal. Based on this, I have in /etc/zaptel.conf something like: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 I don't think there is such a thing as 'timing groups' like you are thinking about. The primary option for timing is 1, and secondary is 2, third is 3, etc. If 1 is down, it goes 2 to, etc. I'm just learning myself, but I'm pretty sure it should be: span=1,1,0,esf,b8zs e&m=1-24 span=2,2,0,esf,b8zs e&m=25-48 span=3,3,0,esf,b8zs e&m=49-72 span=4,4,0,esf,b8zs e&m=73-96 Kevin ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] Zaptel T1 Timing Source
Hi guys, I have a question about the timing source parameter in zaptel.conf. I have 4 T1s coming into a TE410P. One T1 is with one carrier, who provides timing signal. The other 3 T1s are from a different carrier, all sharing the same timing signal. Based on this, I have in /etc/zaptel.conf something like: span=1,1,0,esf,b8zs e&m=1-24 span=2,1,0,esf,b8zs e&m=25-48 span=3,2,0,esf,b8zs e&m=49-72 span=4,2,0,esf,b8zs e&m=73-96 What I have done is set the timing source of the first T1 to be the primary source for itself. For the other three T1s, I set the second T1 to be the primary source for the group of 3 and the other two as secondary sources. Is this correct? The reason I ask is because every so often I hear people complaint about call drops. It doesn't happen to everyone, so I don't know if it has anything to do with time source selection and synchronization issues that may be affecting individual channels. After a report of a call drop, I check dmesg and I don't really see any errors. Sometimes I just see ... disable echo cancel... messages on specific channels, but that shouldn't be a reason to drop a call. Am I right? Any ideas? Thanks, Waldo ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
