How do I start a conference call on a Mitel 5303 Conference Phone? It states it only hosts up to 8-10 people.

The "mic" button on the mitel telephone is your MUTE button. However, this may not work if you are taking the call on the handset (depending on the version of Mitel software on the main control). In this situation the MUTE button only works on handsfree (speakerphone) calls. Note well - if your office phone system has Music-On-Hold then **DO NOT** put a conference call on hold. MOH is extremely disruptive to other parties on the call,
Hope this helps.

I believe that if you reach a busy signal, you can hang up. The conference should ring you back and the rest of the conference will be there.

Here's what the documentation shows from within the help of a 3300 ICP/MCD...

a 5303 is to be treated just like a 2500 series set...

2500, 5302 IP Phone, SUPERSET 401, SUPERSET 401+, and SUPERSET 4001 telephones:

To form a Conference when a two-party call is already in place, or to add another party to an existing Conference:

1. Press Flash or flash the switchhook.
   

2. Dial the number of the next party.
   

3. Wait for an answer.
   

4. Press Flash or Flash the switchhook.
   

5. Dial the Conference Call Feature Access Code.
   

To Leave a Conference:

• Hang up.
  

2500 telephone:

To split a Conference and speak privately with the original party:

1. Flash the switchhook.
   

2. Dial the Conference Call Split Feature Access code.
   

What phone do you have it connected to? Some phones will allow the PoE to pass onto the 5310, others require a 24VDC power cord.

The original setup of the phone was most likely done on a mitel 5224, you can only use this model or newer. The 5220 or 5215 will give this error when trying to replace the original phone. To use these phones, delete the extension and redo it.

Sorry to tell you, but the Superset 4015 is not capable of doing this conference feature.

It has loud speaker capabililties (for paging, or listening to calls), but no microphone for your conference meeting.

can somebody help me we have a Sip connection between a mitel 3300 and Cisco callmanager only the conference call doesn't work who can help me out

These are analog only phones using a POTs line if you've connected everything properly and all the cables are in fine condition no broken conductors or anything it should work. If the keypad lights up you only need to hit the very buttom button and you should get a dialtone. To make a call you may need to dial a 9 or 909 (depending on the phone system programming) to get an outside line if this connected on an anolog line through a PBX. Probably first test it using a working faxline. If you do not get a dialtone and all cabling looks good it maybe that keypad got dropped. I have one that has been knocked off of a table - someone tripped over the cord - noone will admit it but through testing I've discovered it's in the keypad end, symptons being no dialtone.

I have made these cords up before, this cord only uses 2 conductors so a length of Cat3 (station wire) 3 pair or less would be more than enough. Looking straight at the jack end with the tab facing down the pins are numbered from right to left, starting at 1 from the right to 4 or 8 depending on whether it is RJ11 or RJ45. On the RJ11 end pin 2 is red and pin 3 is white,on the RJ45 end pin 1 is red and pin 2 is white. That's it all you need is a crimper and the ends.

Yes you would have to have them on seperate analog phone lines and 1 would have to dial the other. To add a 3rd party you have hit the flash button dial the other party, connect, and hit flash again.