src/Ovh/Telephony/Telephony.php
public function getBillingAccountServices()
    {
    	$serviceList = json_decode(self::getClient()->getBillingAccountServices($this->billingAccount));

    	$services = array();

    	foreach ($serviceList as $service) 
    	{
    		$services[] = new TelephonyAccountService($service, $this);
    	}
    	return $services;
    }
public function getBillingAccountServices()
    {
    	$serviceList = json_decode(self::getClient()->getBillingAccountServices($this->billingAccount));

    	$services = array();

    	foreach ($serviceList as $service) 
    	{
    		$services[] = new TelephonyAccountService($service, $this);
    	}
    	return $services;
    }
Get services associated with this billing account.
@return array billing accoun services