Toshiba Phone System

Can someone help me out with my friend's IP-PBX?

An organization that I belong to has an IP-PBX with VoIP service, along with 3 analog telephones connected to it, using RJ11 connectors. They have 2 phone numbers going to the PBX. When the PBX was first installed, it was working okay for a few months. But after a while, callers that would call the organization would get a busy signal. Sometimes just 1 of the 2 phone numbers would have a busy signal, but most of the time, both phone numbers would be busy. But callers inside the organization are always able to dial out, whether the callers calling the organization get a busy signal, or not. We tried to fix this problem by unplugging the power cord from the PBX for about 10 seconds. When we plugged it back in, callers would not get a busy signal anymore. But after a few days, callers start getting a busy signal again, and the PBX has to be unplugged, and plugged back in again. This happens just about every week. So in other words, callers inside the organization are always able to dial out, but callers calling the organization usually get a busy signal, even when none of the telephones are off the hook. I am not sure about the PBX's brand or model number. Can anyone please give me any ideas on what can be done to correct the problem that my organization is having? Could it be a cabling issue?

Public Comments

1. Hello The reason is that you didnt hire a good company for VoIP service. I strongly recommend you have look at http://www.telcodepot.com/guide/voip-services/159 They also have chat live for questions. Good luck!!
2. I would bridge an RJ 11 jack to the incoming analog lines. I would plug in an analog telephone into the extra jack. If someone reports that they are receiving busy signals, then check with the analog telephones that you can draw dialtone. If you can then you need to report the trouble to the Telco. If there is conversation on the two lines then it is working properly. You should also track who are the people reporting the problem. I am not sure of the correct designations any more but the telephone number breakdown used to be the first three digits were the Network Planing Area (NPA or area code), the next three numbers were the Network Number Exchange (NNX), and the last four numbers were the network terminal number. If all of the calls are from the same NPA and NNX only, or all from the same NPA and NNX from a specific geographical area of the city then report it to the Telco as they have a routing problem. One more question, there are actually two busy signals. The 60 Interruptions per MInute or slow busy means that the line is busy, the 120 IPM or fast busy means that the connections from one Telco office to your Telco office are in use, and there are no High performance routing options are available to get around the congestion. If it is a fast busy your lines may be idle and the caller will still get the all trunks busy signal.