- This topic has 7 replies, 1 voice, and was last updated 13 years, 11 months ago by Phaysal.
24th January 2006 at 17:15 #43973AbdelGuest
I am new in Telecoms and my company is waiting me to solve everything.My company is a mobile operator, fixed line and internet provider and the whole network has no any clock resource at all, such as a BITS machine or Strantum 1 or 2,
and we have a lot of unkown problems may be caused by the lack of clock, therefore can anybody tell me the effect of lack of clock?25th January 2006 at 08:10 #43974AbdelGuest
Also if I buy a single PRS(Primary Reference Source) clock and connect it to my tandem office, can it solve my problems?25th January 2006 at 12:08 #43975IAMGuest
At least you have to buy GPS sourse. And also you can use sinch signal from other operators for redundancy26th January 2006 at 05:16 #43976AbdelGuest
Thanks for your reply. Which is more reliable and A GPS source or an Cesium? what about the cost also I think Cesium is more expensive?
Regards27th January 2006 at 12:22 #43977IAMGuest
Of course, Cesium is better and more expensive. Usually it used like redundancy or second priority for big network. First priority – GPS.
But it depend on network structure.
It is also possible to use GPS and Other Operator sinch singnal.
For prices you can look for example: http://www.oscilloquartz.com
BR27th January 2006 at 12:43 #43978AbdelGuest
Thank you very much for your usefull answer. Sorry I had another question, is a single prc or master clock enough for a whole network also I saw a lot of figures showing a network of master and slave clocks. Therefore must I also connect several clocks like that i saw in the figures or a single prc clock is enough(my network consist of up to 20 pstn switches and a single msc)
Regards27th January 2006 at 13:26 #43979IAMGuest
The main parameter is quantity of multiplexers between nodes in transmission part. It is guarantee to get good sinch signal in endpoin – if you have less than 10 MUX hops from PRS. If it’s like this you don’t need additional sourse. Another case you need it.
Also, your MUXs must work transparently for synch signal.
BR14th March 2007 at 00:51 #43980PhaysalGuest
I was just wondering if you ended up with a solution to this prob. I am looking into the effects of sync degradation on network KPI. Can you provide me any info in this regards