2.25 Identification Response message (IRS): A message sent in response to the identification request message. Table 48/Q.763 Message Type: Identification response Parameter Reference (subclause) Type Length (octets) Message type 2.1 F 1 MCID response indicators 3.32 O 3 Message compatibility information 3.33 O 3-? Parameter compatibility information 3.41 O 4-? Calling party number (Note 2) 3.10 O 4-? Access transport 3.3 O 3-? Generic number (Notes 1 and 2) 3.26 O 5-? Charged party identification (national use) 3.75 O 3-? End of optional parameters 3.20 O 1 NOTE 1 - This parameter may be repeated. NOTE 2 - Peer-to-peer interworking with an earlier version of ISUP may result in format errors and lead to the release of the call.