Dear colleagues, can someone help this engineer from Brazil? I will translate his two questions: 1) When RRq fails in H.225.0 and there is a retransmission, requestSeqNum is repeated. His question is, what does he use as the timestamp? I presume it remains the same. 2) What happens with the timestamp when summer savings time (clock is adjusted one hour ahead or behind) starts? I presume if it changes outside a session, it is business as usual; if it changes in the middle of a session, then it should stick to the original one, and start +,- 1 hour for the next sessions open. Please copy any replies to him at: José Antonio Mechaileh jmechail@terra.com.br as he does not subscribe to this mailing list. Thanks! Simao _____ From: José Antonio Mechaileh [mailto:jmechail@terra.com.br] Sent: 30 August 2005 16:49 To: Campos, Simao Subject: socorro! Caro amigo Simão Socorro! I need help! Estou com uma dúvida a respeito de H.225 e não estou achando a resposta: quando um RRQ falha por algum motivo e ocorre uma retransmissão, o valor de "requestSeqNum" é repetido. Ver abaixo: "requestSeqNum in messages is used to keep track of multiple outstanding requests. Any associated response messages (success or failure) shall have the corresponding requestSeqNum returned with it. Retransmitted messages shall have the same requestSeqNum. RequestSeqNum increments by 1 modulo 65536." A dúvida é: o que acontece com o timestamp? Deve ser repetido também??? Ou ele sempre aumenta? Outra dúvida: o que acontece com o horário de verão? O relógio volta ou avança 1 hora. O que acontece com o Timestamp nessas situações? Muito obrigado pela ajuda! Um abraço Zé