A method comprising: tracking bandwidth utilization of a wireless backhaul network of a wireless mesh network, the mesh network comprising a root access point and one or more mesh access points (105, 107, 109), the backhaul network operative to link the mesh access points (105, 107, 109) and the root access point with a set of backhaul links that form a tree topology in which the root access point is the root of the tree topology, wherein an access network is formed for communicating to and from a client station (111, 113) of any mesh access point via the root access point; receiving a call admission request for a time sensitive packet data call from a client station of a first mesh access point of the wireless mesh network, the call admission request identifying a QoS access class; ascertaining using the tracked bandwidth utilization whether or not the backhaul network is likely to have sufficient capacity to carry the call, the ascertaining using a backhaul call admission control method operative to carry out the ascertaining, the backhaul call admission control method comprising: computing a first allocation of bandwidth for the call admission request; and approving the call if the computed first allocation is less than an amount of the backhaul bandwidth available to a QoS access class identified in the call admission request; and in the case that the ascertaining ascertains that the backhaul network is likely to have sufficient capacity for the call and further, in the case that an access level call admission control method operative to ascertain whether the access network is likely to have sufficient bandwidth to carry the call, ascertains to approve the call at the access network level, sending a positive call admission response. tracking bandwidth utilization of a wireless backhaul network of a wireless mesh network, the mesh network comprising a root access point and one or more mesh access points (105, 107, 109), the backhaul network operative to link the mesh access points (105, 107, 109) and the root access point with a set of backhaul links that form a tree topology in which the root access point is the root of the tree topology, wherein an access network is formed for communicating to and from a client station (111, 113) of any mesh access point via the root access point; receiving a call admission request for a time sensitive packet data call from a client station of a first mesh access point of the wireless mesh network, the call admission request identifying a QoS access class; ascertaining using the tracked bandwidth utilization whether or not the backhaul network is likely to have sufficient capacity to carry the call, the ascertaining using a backhaul call admission control method operative to carry out the ascertaining, the backhaul call admission control method comprising: computing a first allocation of bandwidth for the call admission request; and approving the call if the computed first allocation is less than an amount of the backhaul bandwidth available to a QoS access class identified in the call admission request; and computing a first allocation of bandwidth for the call admission request; and approving the call if the computed first allocation is less than an amount of the backhaul bandwidth available to a QoS access class identified in the call admission request; and in the case that the ascertaining ascertains that the backhaul network is likely to have sufficient capacity for the call and further, in the case that an access level call admission control method operative to ascertain whether the access network is likely to have sufficient bandwidth to carry the call, ascertains to approve the call at the access network level, sending a positive call admission response.