bolsen6581
Vendor
Mitel system is at 4.X. Large customer with Per nodes so an upgrade isn't in the cards at this moment. Have to work with what I got.
I am fully certified on the Mitel MCD/MAS side of things and have a general understanding of how SIP works and I am fairly competent on the networking side but I am still no expert so please no silly questions like "can they ping" I myself do not have access to the Cisco....only the Mitel side.
I've gone over the SIP CoE documents for this multiple times and the only configuration guide is for a 3300 7.x system (older system) to Cisco CUCM which was published by Cisco and I can only assume the customer has also, since I can't see what he's doing.
What is occurring is when a call is placed in either direction the calls are working great. The issue is that when calling the Cisco from a Mitel phone, if the cisco user either doesn't answer or presses a "Divert" button the call is dropped by the Mitel, instead of going to the Cisco systems voicemail. The Cisco guide did mention that calls to the Mitel that were rerouted to the voicemail failed under certain circumstances which is fine. I am only concerned with the Mitel to Cisco direction at the moment.
We are connecting directly to a "Subscriber" from what I am told and we've also tried connecting directly to a "Publisher" What those terms are in cisco land I am not sure. We have no Mitel SIP Proxy between us as one was not purchased.
I've tried flagging the Peer as a public trunk in the Mitel but that hasn't worked.
I've tried to disable all COS options for the SIP peer and only enable the specific ones stated in the document in the off chance this was a COS issue
I've tried to disable all the SIP peer options except those mentioned in the off chance this was a problem with my SIP peer settings
I've used just default COS and Peer settings only enabling/disabling those settings specifically told to.
From what I can tell in all my testing is that we require a "SIP Gateway" between us but I am not sure if it has to be the Mitel SIP Proxy or if this is something the Cisco can provide out of the box. I just need some sort of confirmation that, that is the reason and maybe a brief explication as to why so I can stop banging my head. Thank you.
-I can explain it to you but I can't understand it for you.
I am fully certified on the Mitel MCD/MAS side of things and have a general understanding of how SIP works and I am fairly competent on the networking side but I am still no expert so please no silly questions like "can they ping" I myself do not have access to the Cisco....only the Mitel side.
I've gone over the SIP CoE documents for this multiple times and the only configuration guide is for a 3300 7.x system (older system) to Cisco CUCM which was published by Cisco and I can only assume the customer has also, since I can't see what he's doing.
What is occurring is when a call is placed in either direction the calls are working great. The issue is that when calling the Cisco from a Mitel phone, if the cisco user either doesn't answer or presses a "Divert" button the call is dropped by the Mitel, instead of going to the Cisco systems voicemail. The Cisco guide did mention that calls to the Mitel that were rerouted to the voicemail failed under certain circumstances which is fine. I am only concerned with the Mitel to Cisco direction at the moment.
We are connecting directly to a "Subscriber" from what I am told and we've also tried connecting directly to a "Publisher" What those terms are in cisco land I am not sure. We have no Mitel SIP Proxy between us as one was not purchased.
I've tried flagging the Peer as a public trunk in the Mitel but that hasn't worked.
I've tried to disable all COS options for the SIP peer and only enable the specific ones stated in the document in the off chance this was a COS issue
I've tried to disable all the SIP peer options except those mentioned in the off chance this was a problem with my SIP peer settings
I've used just default COS and Peer settings only enabling/disabling those settings specifically told to.
From what I can tell in all my testing is that we require a "SIP Gateway" between us but I am not sure if it has to be the Mitel SIP Proxy or if this is something the Cisco can provide out of the box. I just need some sort of confirmation that, that is the reason and maybe a brief explication as to why so I can stop banging my head. Thank you.
-I can explain it to you but I can't understand it for you.