bgriffith1976
IS-IT--Management
Looking to see what people are using out there that have successful SCN setups across the net. I mean with an absolute minimum of call quality issues.
Example we have one location that has a 1.5Meg T1 at each of their two locations. At location a, there is no data traffic on it. At location B, the T1 is being used for data as well as VOIP between the two facilities. There are only a half dozen people at location B and at most 4 calls up at any given time.
Both circuits are through the same carrier, and have priority queues set on the carriers switch. The two loops are so close together that they are on the same piece of hardware through the LEC. If you trace route, it is only one hop after the serial so it should be a great connection.
Both locations have DiffSrv 46 enabled on the IP office, and are using Adtran Netvanta routers with QOS enabled on the outbound interface. (can not enable it on the inbound, not an option)
Location B makes a call out (tandem trunk out of A). The call quality on both ends is fine. Location B starts a high bandwidth down load. Location A still hears them fine, however location B hears the far end as all garbled. It has been determined that the router is not capable of throttling downloads. So the high bandwidth download is bursting to the full limit of the T1 and causing the inbound voip packets to arrive out of sequence.
I have been told by Adtran that the router can not limit download traffic to a percentage of the available, and that the carrier can not do it as well. So there has to be a way to keep the downloads from saturating the circuit.
The temp solution is to drop a DSL in and route all internet traffic out that way, and the VPN for VOIP on the T1. But that is not a viable long term option.
Someone has to be doing this so that it is working correctly and allocating the bandwidth correctly. I am assuming it is an issue with the router. But I want to know what you guys are using that is working for you. There has to be a way to make this work.
Example we have one location that has a 1.5Meg T1 at each of their two locations. At location a, there is no data traffic on it. At location B, the T1 is being used for data as well as VOIP between the two facilities. There are only a half dozen people at location B and at most 4 calls up at any given time.
Both circuits are through the same carrier, and have priority queues set on the carriers switch. The two loops are so close together that they are on the same piece of hardware through the LEC. If you trace route, it is only one hop after the serial so it should be a great connection.
Both locations have DiffSrv 46 enabled on the IP office, and are using Adtran Netvanta routers with QOS enabled on the outbound interface. (can not enable it on the inbound, not an option)
Location B makes a call out (tandem trunk out of A). The call quality on both ends is fine. Location B starts a high bandwidth down load. Location A still hears them fine, however location B hears the far end as all garbled. It has been determined that the router is not capable of throttling downloads. So the high bandwidth download is bursting to the full limit of the T1 and causing the inbound voip packets to arrive out of sequence.
I have been told by Adtran that the router can not limit download traffic to a percentage of the available, and that the carrier can not do it as well. So there has to be a way to keep the downloads from saturating the circuit.
The temp solution is to drop a DSL in and route all internet traffic out that way, and the VPN for VOIP on the T1. But that is not a viable long term option.
Someone has to be doing this so that it is working correctly and allocating the bandwidth correctly. I am assuming it is an issue with the router. But I want to know what you guys are using that is working for you. There has to be a way to make this work.