Maximum Delay ......................................................................................................122Minimum Delay .......................................................................................................122Initial Delay .............................................................................................................1224.5.3.5 DTMF .........................................................................................................................123DTMF Type .............................................................................................................123DTMF Relay ............................................................................................................123Telephone-event Payload Type ..............................................................................1234.5.3.6 Call Hold ....................................................................................................................123Supports RFC 2543 (c=0.0.0.0) ..............................................................................1234.5.3.7 CODEC Preferences .................................................................................................124G722 (Enable) .........................................................................................................124G722 (Priority) .........................................................................................................124PCMA (Enable) .......................................................................................................124PCMA (Priority) .......................................................................................................124G726–32 (Enable) ..................................................................................................125G726–32 (Priority) ...................................................................................................125G729A (Enable) ......................................................................................................125G729A (Priority) ......................................................................................................125G729A (Annexb) .....................................................................................................126PCMU (Enable) .......................................................................................................126PCMU (Priority) .......................................................................................................1264.5.3.8 NAT Identity ...............................................................................................................126RTP Keep Alive Interval ..........................................................................................1264.6 Telephone ......................................................................................................................1274.6.1 Call Control ...................................................................................................................1274.6.1.1 Call Control ................................................................................................................127Inter-digit Timeout ...................................................................................................127Timer for Dial Plan ..................................................................................................127International Call Prefix ...........................................................................................128Country Calling Code ..............................................................................................128National Access Code .............................................................................................128Hold Recall Timer ...................................................................................................128Default Line .............................................................................................................1294.6.1.2 Call Rejection Phone Numbers .................................................................................1291–30 ........................................................................................................................1294.6.2 Call Control [Line 1]–[Line n] ........................................................................................1294.6.2.1 Call Control ................................................................................................................130Display Name ..........................................................................................................130Send SUBSCRIBE to Voice Mail Server ................................................................130Voice Mail Access Number .....................................................................................131Enable Shared Call .................................................................................................131Feature Key Synchronization ..................................................................................132Conference Server URI ...........................................................................................132Resource List URI ...................................................................................................132MoH Server URI ......................................................................................................1334.6.2.2 Dial Plan ....................................................................................................................133Dial Plan ..................................................................................................................133Call Even If Dial Plan Does Not Match ...................................................................1334.6.2.3 Call Features .............................................................................................................134Block Caller ID ........................................................................................................134Block Anonymous Call ............................................................................................134Do Not Disturb ........................................................................................................134Return Code When DND ........................................................................................134Return Code When Refuse .....................................................................................135Auto Answer ............................................................................................................135Document Version 2014-05 Administrator Guide 9Table of Contents