SpitFire Help Desk

Here are some of the basic concerns when thinking about changing your T1 or analog lines to SIP trunks and using them with your existing SpitFire Predictive Pro server.

1. The service provider needs to be tested with our Programming department to verify we can work with it, if the service provider is not one of the providers listed HERE.

2. We have been using a more powerful machines for SIP trunking because of the additional CPU requirements with this type of dialing. This is because there are no Dialogic cards used to make the calls. It is all done through software. The average rack-mount server that OPC Marketing provides for SpitFire Predictive Dialers should be OK for SIP systems up to about 48 lines but that would be pushing the limitations of that hardware and it would not be able to be upgraded any more than that.

Just as a comparison, the standard specs that OPC Marketing have been using are Dual Core Pentiums, with 2 GB of RAM for turn-key machines using SIP trunking. Whereas the hardware specs for anything up to a 48 agent by 96 line Predictive have been using Pentium 4 CPU's with 1 GB of RAM.

3. The Dialogic HMP software (similar to the Dialogic software for telephony boards, but for SIP) that is required for SIP will require the purchase port licenses for that software specifically, equal to the number of SPD ports you are going to need use on the Dialer.

With SIP trunking we cannot use any Dialogic cards, so the agents would have to be remote, either using soft phones or regular phones with DID's assigned to them. This means an extra port license for every agent, if you want to maintain a 2 to 1 dial ratio. So an 8x16 would become a 8x24 in that case. That means 8 additional port licenses purchased for SPD and 24 port license purchased for the HMP software.

4. OPC Tech Support would have to install the latest SPD Pro software, CTI32 and HMP software. If the agents are going to use soft phones, we would need to work with you on the installation of the X-Lite software we use for that. Also if we are dialing the soft phones, are the agent PC's in the same subnet as the Predictive Dialer? This as well as certain ports being open for SIP communication over firewalls are important considerations regarding the Agent side of the Predictive configuration.

5. The firewall behind which the Predictive Dialer is hosted should be SIP compatible (e.g. Cisco) if this is not the case then port forwarding is required for the following ports, TCP ports 1719, 1720, 5060, 12002, 12003, 12004, 20000 and 20001.
TCP/UDP ports 5060, 5080 and 5081. Also ports  49152 through however many lines are licensed x2. So if licensed for 8 lines, it would be 49152-49168.
Specifying the above port forwarding settings in the firewall will avoid miscommunication between the SIP provider and the SpitFire software.

6. Bandwidth required per port would be at least 100 Kilo bits per second (Kbps) upload and download. The 100 Kbps bandwidth is required when the system uses G.711 codec. This is the dedicated bandwidth requirement to the Dialer so please take that into consideration as your existing computer systems on the network will be sharing this bandwidth with the Dialer.