Patent ID: 8638813

Claim:
A method comprising: receiving a first negotiation message from a first protocol entity that carries a first value for at least one parameter of a protocol that is operated between said first protocol entity and a second protocol entity, wherein said first value is an invalid value for said at least one parameter, and wherein said invalid value is not allowed by said protocol; checking whether said at least one parameter is required for operation of said protocol; and sending a second negotiation message to said first protocol entity that carries a second value for said at least one parameter in response to receiving said first negotiation message, wherein said second negotiation message is configured to prevent a termination or an interruption of a negotiation of said at least one parameter of said protocol that is operated between said first protocol entity and said second protocol entity, wherein said second value is set to a value representative of said first value when said at least one parameter is not required for said operation of said protocol.