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Callmanager 7.0 not sending ACK

patcbr600
Level 1
Level 1

Hi all,

I'm having the folowing problem with sip calls:

When i try to call from cisco callmanager to a GSM sip gateway the callmanager never send the ack to a status 200:ok messague that is send from the gateway to the callmanager and since i dont have early-media configure the the sdp is never send from the callmanager to the gateway. The flow for the messages is the folowing :

CM to GSM-Gateway

INVITE->

<-TRYING

<-RINGING

<-SDP-STATUS:200 OK

<-SDP-STATUS:200 OK

<-SDP-STATUS:200 OK

<-REQUEST:BYE

STATUS:200OK ->

Since the ack to the status 200 OK is never send the call is never stablishes

Does any one have an ideia

Thanks

6 Replies 6

wole.bamidele
Level 1
Level 1

Hello all.

Pls i need your help, I have a UC520 device and my IP phones 521SG and 524SG Phones are not communicatiing with it. My IOS is 12.4 and CME version is 3.0.

Kindly help.

Hi,

Are the phones register with the CME ?,

Thanks

Pls explain wat u mean?

Also wats the diffrence between Cisco Unity Express and Communication manager Express.

You need to be on 12.4(20)T or 12.4(11)XW7 or higher for the CP-500 phones to register.

-nick

Thanks Nick,

I use 12.4(11)XW7 and its not registering.

My phones are 524SG,521SG and SPA525G.

I use cisco unity express 3.0.

I think it may be XW8. Trying to find original release, but cannot find the IOS required for these.

-nick

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